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cve-2021-34696
Vulnerability from cvelistv5
Published
2021-09-23 02:25
Modified
2024-11-07 21:59
Severity ?
EPSS score ?
Summary
A vulnerability in the access control list (ACL) programming of Cisco ASR 900 and ASR 920 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to incorrect programming of hardware when an ACL is configured using a method other than the configuration CLI. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.
References
Impacted products
Vendor | Product | Version | ||
---|---|---|---|---|
Cisco | Cisco IOS XE Software |
Version: n/a |
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cisco-sa-asr900acl-ueeycxkv
Vulnerability from csaf_cisco
Published
2021-09-22 16:00
Modified
2021-09-22 16:00
Summary
Cisco ASR 900 and ASR 920 Series Aggregation Services Routers Access Control List Bypass Vulnerability
Notes
Summary
A vulnerability in the access control list (ACL) programming of Cisco ASR 900 and ASR 920 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass a configured ACL.
This vulnerability is due to incorrect programming of hardware when an ACL is configured using a method other than the configuration CLI. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
This advisory is part of the September 2021 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2021 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication. ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74581"]
Vulnerable Products
At the time of publication, this vulnerability affected the following Cisco products if they were running a vulnerable release of Cisco IOS XE Software and had an IPv4 ACL configured:
ASR 900 Series Aggregation Services Routers with Route Switch Processors (RSPs) 1, 2, or 3
ASR 920 Series Aggregation Services Routers
For information about which Cisco software releases are vulnerable, see the Fixed Software ["#fs"] section of this advisory.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products ["#vp"] section of this advisory are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect the following Cisco products:
IOS Software
IOS XR Software
Meraki products
NX-OS Software
Workarounds
There are no workarounds that address this vulnerability. However, administrators can reload the device to fix the ACL programming.
This vulnerability has not been found in ACLs that are manually configured using the CLI. However, there is no mechanism to determine whether an ACL has been correctly programmed on a device. Reloading the device will apply the correct programming to all ACLs and cause them to operate as configured, regardless of the method that was used for their initial configuration.
While this mitigation has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
Fixed Software
When considering software upgrades ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"], customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page ["https://www.cisco.com/go/psirt"], to determine exposure and a complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.
Cisco IOS and IOS XE Software
To help customers determine their exposure to vulnerabilities in Cisco IOS and IOS XE Software, Cisco provides the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] to identify any Cisco Security Advisories that impact a specific software release and the earliest release that fixes the vulnerabilities described in each advisory (“First Fixed”). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities described in all the advisories identified (“Combined First Fixed”).
Customers can use the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] to search advisories in the following ways:
Choose the software and one or more releases
Upload a .txt file that includes a list of specific releases
Enter the output of the show version command
After initiating a search, customers can customize the search to include all Cisco Security Advisories, a specific advisory, or all advisories in the most recent bundled publication.
Customers can also use the following form to determine whether a release is affected by any Cisco Security Advisory by entering a Cisco IOS or IOS XE Software release—for example, 15.1(4)M2 or 3.13.8S:
By default, the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] includes results only for vulnerabilities that have a Critical or High Security Impact Rating (SIR). To include results for Medium SIR vulnerabilities, customers can use the Cisco Software Checker on Cisco.com and check the Medium check box in the drop-down list under Impact Rating when customizing a search.
Vulnerability Policy
To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
Exploitation and Public Announcements
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
Source
Cisco would like to thank Gert Döring of SpaceNet for reporting this vulnerability.
Legal Disclaimer
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.
{ "document": { "acknowledgments": [ { "summary": "Cisco would like to thank Gert D\u00f6ring of SpaceNet for reporting this vulnerability." } ], "category": "csaf_security_advisory", "csaf_version": "2.0", "notes": [ { "category": "summary", "text": "A vulnerability in the access control list (ACL) programming of Cisco ASR 900 and ASR 920 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass a configured ACL.\r\n\r\nThis vulnerability is due to incorrect programming of hardware when an ACL is configured using a method other than the configuration CLI. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\n\r\n\r\nThis advisory is part of the September 2021 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2021 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication. [\"https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74581\"]", "title": "Summary" }, { "category": "general", "text": "At the time of publication, this vulnerability affected the following Cisco products if they were running a vulnerable release of Cisco IOS XE Software and had an IPv4 ACL configured:\r\n\r\nASR 900 Series Aggregation Services Routers with Route Switch Processors (RSPs) 1, 2, or 3\r\nASR 920 Series Aggregation Services Routers\r\n\r\nFor information about which Cisco software releases are vulnerable, see the Fixed Software [\"#fs\"] section of this advisory.", "title": "Vulnerable Products" }, { "category": "general", "text": "Only products listed in the Vulnerable Products [\"#vp\"] section of this advisory are known to be affected by this vulnerability.\r\n\r\nCisco has confirmed that this vulnerability does not affect the following Cisco products:\r\n\r\nIOS Software\r\nIOS XR Software\r\nMeraki products\r\nNX-OS Software", "title": "Products Confirmed Not Vulnerable" }, { "category": "general", "text": "There are no workarounds that address this vulnerability. However, administrators can reload the device to fix the ACL programming.\r\n\r\nThis vulnerability has not been found in ACLs that are manually configured using the CLI. However, there is no mechanism to determine whether an ACL has been correctly programmed on a device. Reloading the device will apply the correct programming to all ACLs and cause them to operate as configured, regardless of the method that was used for their initial configuration.\r\n\r\nWhile this mitigation has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.", "title": "Workarounds" }, { "category": "general", "text": "When considering software upgrades [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"], customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page [\"https://www.cisco.com/go/psirt\"], to determine exposure and a complete upgrade solution.\r\n\r\nIn all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.\r\n Cisco IOS and IOS XE Software\r\nTo help customers determine their exposure to vulnerabilities in Cisco IOS and IOS XE Software, Cisco provides the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] to identify any Cisco Security Advisories that impact a specific software release and the earliest release that fixes the vulnerabilities described in each advisory (\u201cFirst Fixed\u201d). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities described in all the advisories identified (\u201cCombined First Fixed\u201d).\r\n\r\nCustomers can use the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] to search advisories in the following ways:\r\n\r\nChoose the software and one or more releases\r\nUpload a .txt file that includes a list of specific releases\r\nEnter the output of the show version command\r\n\r\nAfter initiating a search, customers can customize the search to include all Cisco Security Advisories, a specific advisory, or all advisories in the most recent bundled publication.\r\n\r\nCustomers can also use the following form to determine whether a release is affected by any Cisco Security Advisory by entering a Cisco IOS or IOS XE Software release\u2014for example, 15.1(4)M2 or 3.13.8S:\r\n\r\n\r\n\r\nBy default, the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] includes results only for vulnerabilities that have a Critical or High Security Impact Rating (SIR). To include results for Medium SIR vulnerabilities, customers can use the Cisco Software Checker on Cisco.com and check the Medium check box in the drop-down list under Impact Rating when customizing a search.", "title": "Fixed Software" }, { "category": "general", "text": "To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html\"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.", "title": "Vulnerability Policy" }, { "category": "general", "text": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.", "title": "Exploitation and Public Announcements" }, { "category": "general", "text": "Cisco would like to thank Gert D\u00f6ring of SpaceNet for reporting this vulnerability.", "title": "Source" }, { "category": "legal_disclaimer", "text": "THIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.\r\n\r\nA standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.", "title": "Legal Disclaimer" } ], "publisher": { "category": "vendor", "contact_details": "psirt@cisco.com", "issuing_authority": "Cisco PSIRT", "name": "Cisco", "namespace": "https://wwww.cisco.com" }, "references": [ { "category": "self", "summary": "Cisco ASR 900 and ASR 920 Series Aggregation Services Routers Access Control List Bypass Vulnerability", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr900acl-UeEyCxkv" }, { "category": "external", "summary": "Cisco Event Response: September 2021 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication", "url": "https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74581" }, { "category": "external", "summary": "Cisco Security Vulnerability Policy", "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html" }, { "category": "external", "summary": "considering software upgrades", "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes" }, { "category": "external", "summary": "Cisco\u0026nbsp;Security Advisories page", "url": "https://www.cisco.com/go/psirt" }, { "category": "external", "summary": "Cisco\u0026nbsp;Software Checker", "url": "https://sec.cloudapps.cisco.com/security/center/softwarechecker.x" } ], "title": "Cisco ASR 900 and ASR 920 Series Aggregation Services Routers Access Control List Bypass Vulnerability", "tracking": { "current_release_date": "2021-09-22T16:00:00+00:00", "generator": { "date": "2024-05-10T23:09:27+00:00", "engine": { "name": "TVCE" } }, "id": "cisco-sa-asr900acl-UeEyCxkv", "initial_release_date": "2021-09-22T16:00:00+00:00", "revision_history": [ { "date": "2021-09-22T15:48:43+00:00", "number": "1.0.0", "summary": "Initial public release." } ], "status": "final", "version": "1.0.0" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "branches": [ { "category": "service_pack", "name": "3.13.4S", "product": { "name": "3.13.4S", "product_id": "CSAFPID-213475" } }, { "category": "service_pack", "name": "3.13.5S", "product": { "name": "3.13.5S", "product_id": "CSAFPID-213557" } }, { "category": "service_pack", "name": "3.13.6S", "product": { "name": "3.13.6S", "product_id": "CSAFPID-217262" } }, { "category": "service_pack", "name": "3.13.7S", "product": { "name": "3.13.7S", "product_id": "CSAFPID-217263" } }, { "category": "service_pack", "name": "3.13.6aS", "product": { "name": "3.13.6aS", "product_id": "CSAFPID-220688" } }, { "category": "service_pack", "name": "3.13.8S", "product": { "name": "3.13.8S", "product_id": "CSAFPID-227923" } }, { "category": "service_pack", "name": "3.13.9S", "product": { "name": "3.13.9S", "product_id": "CSAFPID-231454" } }, { "category": "service_pack", "name": "3.13.10S", "product": { "name": "3.13.10S", "product_id": "CSAFPID-234928" } } ], "category": "product_version", "name": "3.13S" }, { "branches": [ { "category": "service_pack", "name": "3.14.3S", "product": { "name": "3.14.3S", "product_id": "CSAFPID-206192" } }, { "category": "service_pack", "name": "3.14.4S", "product": { "name": "3.14.4S", "product_id": "CSAFPID-206193" } } ], "category": "product_version", "name": "3.14S" }, { "branches": [ { "category": "service_pack", "name": "3.15.0S", "product": { "name": "3.15.0S", "product_id": "CSAFPID-206180" } }, { "category": "service_pack", "name": "3.15.1S", "product": { "name": "3.15.1S", "product_id": "CSAFPID-210079" } }, { "category": "service_pack", "name": "3.15.2S", "product": { "name": "3.15.2S", "product_id": "CSAFPID-212268" } }, { "category": "service_pack", "name": "3.15.3S", "product": { "name": "3.15.3S", "product_id": "CSAFPID-213776" } }, { "category": "service_pack", "name": "3.15.4S", "product": { "name": "3.15.4S", "product_id": "CSAFPID-217264" } } ], "category": "product_version", "name": "3.15S" }, { "branches": [ { "category": "service_pack", "name": "3.16.0S", "product": { "name": "3.16.0S", "product_id": "CSAFPID-210081" } }, { "category": "service_pack", "name": "3.16.0aS", "product": { "name": "3.16.0aS", "product_id": "CSAFPID-213476" } }, { "category": "service_pack", "name": "3.16.1aS", "product": { "name": "3.16.1aS", "product_id": "CSAFPID-213477" } }, { "category": "service_pack", "name": "3.16.2aS", "product": { "name": "3.16.2aS", "product_id": "CSAFPID-213635" } }, { "category": "service_pack", "name": "3.16.0bS", "product": { "name": "3.16.0bS", "product_id": "CSAFPID-213777" } }, { "category": "service_pack", "name": "3.16.3aS", "product": { "name": "3.16.3aS", "product_id": "CSAFPID-217266" } }, { "category": "service_pack", "name": "3.16.4S", "product": { "name": "3.16.4S", "product_id": "CSAFPID-217267" } }, { "category": "service_pack", "name": "3.16.4bS", "product": { "name": "3.16.4bS", "product_id": "CSAFPID-222257" } }, { "category": "service_pack", "name": "3.16.5S", "product": { "name": "3.16.5S", "product_id": "CSAFPID-222694" } }, { "category": "service_pack", "name": "3.16.6S", "product": { "name": "3.16.6S", "product_id": "CSAFPID-225099" } }, { "category": "service_pack", "name": "3.16.5aS", "product": { "name": "3.16.5aS", "product_id": "CSAFPID-225466" } }, { "category": "service_pack", "name": "3.16.7S", "product": { "name": "3.16.7S", "product_id": "CSAFPID-228690" } }, { "category": "service_pack", "name": "3.16.6bS", "product": { "name": "3.16.6bS", "product_id": "CSAFPID-230303" } }, { "category": "service_pack", "name": "3.16.7bS", "product": { "name": "3.16.7bS", "product_id": "CSAFPID-233447" } }, { "category": "service_pack", "name": "3.16.8S", "product": { "name": "3.16.8S", "product_id": "CSAFPID-238937" } }, { "category": "service_pack", "name": "3.16.9S", "product": { "name": "3.16.9S", "product_id": "CSAFPID-244912" } }, { "category": "service_pack", "name": "3.16.10S", "product": { "name": "3.16.10S", "product_id": "CSAFPID-258406" } } ], "category": "product_version", "name": "3.16S" }, { "branches": [ { "category": "service_pack", "name": "3.17.0S", "product": { "name": "3.17.0S", "product_id": "CSAFPID-212411" } }, { "category": "service_pack", "name": "3.17.1S", "product": { "name": "3.17.1S", "product_id": "CSAFPID-212412" } }, { "category": "service_pack", "name": "3.17.2S", "product": { "name": "3.17.2S", "product_id": "CSAFPID-217234" } }, { "category": "service_pack", "name": "3.17.3S", "product": { "name": "3.17.3S", "product_id": "CSAFPID-222942" } }, { "category": "service_pack", "name": "3.17.4S", "product": { "name": "3.17.4S", "product_id": "CSAFPID-227556" } } ], "category": "product_version", "name": "3.17S" }, { "branches": [ { "category": "service_pack", "name": "16.5.1", "product": { "name": "16.5.1", "product_id": "CSAFPID-217259" } }, { "category": "service_pack", "name": "16.5.2", "product": { "name": "16.5.2", "product_id": "CSAFPID-229187" } }, { "category": "service_pack", "name": "16.5.3", "product": { "name": "16.5.3", "product_id": "CSAFPID-232461" } } ], "category": "product_version", "name": "16.5" }, { "branches": [ { "category": "service_pack", "name": "3.18.0S", "product": { "name": "3.18.0S", "product_id": "CSAFPID-217271" } }, { "category": "service_pack", "name": "3.18.1S", "product": { "name": "3.18.1S", "product_id": "CSAFPID-217272" } }, { "category": "service_pack", "name": "3.18.2S", "product": { "name": "3.18.2S", "product_id": "CSAFPID-217273" } }, { "category": "service_pack", "name": "3.18.3S", "product": { "name": "3.18.3S", "product_id": "CSAFPID-226078" } }, { "category": "service_pack", "name": "3.18.4S", "product": { "name": "3.18.4S", "product_id": "CSAFPID-228193" } } ], "category": "product_version", "name": "3.18S" }, { "branches": [ { "category": "service_pack", "name": "3.18.0SP", "product": { "name": "3.18.0SP", "product_id": "CSAFPID-217276" } }, { "category": "service_pack", "name": "3.18.1SP", "product": { "name": "3.18.1SP", "product_id": "CSAFPID-220517" } }, { "category": "service_pack", "name": "3.18.1gSP", "product": { "name": "3.18.1gSP", "product_id": "CSAFPID-223019" } }, { "category": "service_pack", "name": "3.18.1bSP", "product": { "name": "3.18.1bSP", "product_id": "CSAFPID-223241" } }, { "category": "service_pack", "name": "3.18.2SP", "product": { "name": "3.18.2SP", "product_id": "CSAFPID-225168" } }, { "category": "service_pack", "name": "3.18.1hSP", "product": { "name": "3.18.1hSP", "product_id": "CSAFPID-225359" } }, { "category": "service_pack", "name": "3.18.1iSP", "product": { "name": "3.18.1iSP", "product_id": "CSAFPID-226354" } }, { "category": "service_pack", "name": "3.18.3SP", "product": { "name": "3.18.3SP", "product_id": "CSAFPID-228194" } }, { "category": "service_pack", "name": "3.18.4SP", "product": { "name": "3.18.4SP", "product_id": "CSAFPID-230301" } }, { "category": "service_pack", "name": "3.18.5SP", "product": { "name": "3.18.5SP", "product_id": "CSAFPID-237332" } }, { "category": "service_pack", "name": "3.18.6SP", "product": { "name": "3.18.6SP", "product_id": "CSAFPID-246386" } }, { "category": "service_pack", "name": "3.18.7SP", "product": { "name": "3.18.7SP", "product_id": "CSAFPID-264488" } }, { "category": "service_pack", "name": "3.18.8aSP", "product": { "name": "3.18.8aSP", "product_id": "CSAFPID-277904" } }, { "category": "service_pack", "name": "3.18.9SP", "product": { "name": "3.18.9SP", "product_id": "CSAFPID-278780" } } ], "category": "product_version", "name": "3.18SP" }, { "branches": [ { "category": "service_pack", "name": "16.6.1", "product": { "name": "16.6.1", "product_id": "CSAFPID-218901" } }, { "category": "service_pack", "name": "16.6.2", "product": { "name": "16.6.2", "product_id": "CSAFPID-228706" } }, { "category": "service_pack", "name": "16.6.3", "product": { "name": "16.6.3", "product_id": "CSAFPID-231682" } }, { "category": "service_pack", "name": "16.6.4", "product": { "name": "16.6.4", "product_id": "CSAFPID-233155" } }, { "category": "service_pack", "name": "16.6.5", "product": { "name": "16.6.5", "product_id": "CSAFPID-241736" } }, { "category": "service_pack", "name": "16.6.5a", "product": { "name": "16.6.5a", "product_id": "CSAFPID-252235" } }, { "category": "service_pack", "name": "16.6.6", "product": { "name": "16.6.6", "product_id": "CSAFPID-252914" } }, { "category": "service_pack", "name": "16.6.7", "product": { "name": "16.6.7", "product_id": "CSAFPID-261241" } }, { "category": "service_pack", "name": "16.6.8", "product": { "name": "16.6.8", "product_id": "CSAFPID-277148" } }, { "category": "service_pack", "name": "16.6.9", "product": { "name": "16.6.9", "product_id": "CSAFPID-280801" } } ], "category": "product_version", "name": "16.6" }, { "branches": [ { "category": "service_pack", "name": "16.7.1", "product": { "name": "16.7.1", "product_id": "CSAFPID-218903" } }, { "category": "service_pack", "name": "16.7.2", "product": { "name": "16.7.2", "product_id": "CSAFPID-236837" } }, { "category": "service_pack", "name": "16.7.3", "product": { "name": "16.7.3", "product_id": "CSAFPID-244070" } } ], "category": "product_version", "name": "16.7" }, { "branches": [ { "category": "service_pack", "name": "16.8.1", "product": { "name": "16.8.1", "product_id": "CSAFPID-218905" } }, { "category": "service_pack", "name": "16.8.1b", "product": { "name": "16.8.1b", "product_id": "CSAFPID-235858" } }, { "category": "service_pack", "name": "16.8.1c", "product": { "name": "16.8.1c", "product_id": "CSAFPID-237460" } } ], "category": "product_version", "name": "16.8" }, { "branches": [ { "category": "service_pack", "name": "16.9.1", "product": { "name": "16.9.1", "product_id": "CSAFPID-225856" } }, { "category": "service_pack", "name": "16.9.2", "product": { "name": "16.9.2", "product_id": "CSAFPID-232008" } }, { "category": "service_pack", "name": "16.9.1a", "product": { "name": "16.9.1a", "product_id": "CSAFPID-242308" } }, { "category": "service_pack", "name": "16.9.1b", "product": { "name": "16.9.1b", "product_id": "CSAFPID-243362" } }, { "category": "service_pack", "name": "16.9.3", "product": { "name": "16.9.3", "product_id": "CSAFPID-251075" } }, { "category": "service_pack", "name": "16.9.2a", "product": { "name": "16.9.2a", "product_id": "CSAFPID-251166" } }, { "category": "service_pack", "name": "16.9.3h", "product": { "name": "16.9.3h", "product_id": "CSAFPID-258229" } }, { "category": "service_pack", "name": "16.9.4", "product": { "name": "16.9.4", "product_id": "CSAFPID-262390" } }, { "category": "service_pack", "name": "16.9.4c", "product": { "name": "16.9.4c", "product_id": "CSAFPID-268921" } }, { "category": "service_pack", "name": "16.9.5", "product": { "name": "16.9.5", "product_id": "CSAFPID-271798" } }, { "category": "service_pack", "name": "16.9.5f", "product": { "name": "16.9.5f", "product_id": "CSAFPID-276837" } }, { "category": "service_pack", "name": "16.9.6", "product": { "name": "16.9.6", "product_id": "CSAFPID-277945" } }, { "category": "service_pack", "name": "16.9.7", "product": { "name": "16.9.7", "product_id": "CSAFPID-280651" } } ], "category": "product_version", "name": "16.9" }, { "branches": [ { "category": "service_pack", "name": "16.10.1", "product": { "name": "16.10.1", "product_id": "CSAFPID-225858" } } ], "category": "product_version", "name": "16.10" }, { "branches": [ { "category": "service_pack", "name": "16.11.1", "product": { "name": "16.11.1", "product_id": "CSAFPID-227918" } }, { "category": "service_pack", "name": "16.11.1a", "product": { "name": "16.11.1a", "product_id": "CSAFPID-252271" } }, { "category": "service_pack", "name": "16.11.1b", "product": { "name": "16.11.1b", "product_id": "CSAFPID-260741" } }, { "category": "service_pack", "name": "16.11.2", "product": { "name": "16.11.2", "product_id": "CSAFPID-261240" } }, { "category": "service_pack", "name": "16.11.1s", "product": { "name": "16.11.1s", "product_id": "CSAFPID-261465" } }, { "category": "service_pack", "name": "16.11.1c", "product": { "name": "16.11.1c", "product_id": "CSAFPID-264096" } } ], "category": "product_version", "name": "16.11" }, { "branches": [ { "category": "service_pack", "name": "16.12.1", "product": { "name": "16.12.1", "product_id": "CSAFPID-227920" } }, { "category": "service_pack", "name": "16.12.2", "product": { "name": "16.12.2", "product_id": "CSAFPID-267605" } }, { "category": "service_pack", "name": "16.12.2a", "product": { "name": "16.12.2a", "product_id": "CSAFPID-272047" } }, { "category": "service_pack", "name": "16.12.3", "product": { "name": "16.12.3", "product_id": "CSAFPID-273445" } }, { "category": "service_pack", "name": "16.12.4", "product": { "name": "16.12.4", "product_id": "CSAFPID-277147" } }, { "category": "service_pack", "name": "16.12.5", "product": { "name": "16.12.5", "product_id": "CSAFPID-280463" } }, { "category": "service_pack", "name": "16.12.5a", "product": { "name": "16.12.5a", "product_id": "CSAFPID-281438" } } ], "category": "product_version", "name": "16.12" }, { "branches": [ { "category": "service_pack", "name": "17.1.1", "product": { "name": "17.1.1", "product_id": "CSAFPID-245377" } }, { "category": "service_pack", "name": "17.1.1a", "product": { "name": "17.1.1a", "product_id": "CSAFPID-272932" } }, { "category": "service_pack", "name": "17.1.2", "product": { "name": "17.1.2", "product_id": "CSAFPID-277338" } }, { "category": "service_pack", "name": "17.1.3", "product": { "name": "17.1.3", "product_id": "CSAFPID-280652" } } ], "category": "product_version", "name": "17.1" }, { "branches": [ { "category": "service_pack", "name": "17.2.1", "product": { "name": "17.2.1", "product_id": "CSAFPID-251225" } } ], "category": "product_version", "name": "17.2" }, { "branches": [ { "category": "service_pack", "name": "17.3.1", "product": { "name": "17.3.1", "product_id": "CSAFPID-254712" } }, { "category": "service_pack", "name": "17.3.2", "product": { "name": "17.3.2", "product_id": "CSAFPID-277099" } }, { "category": "service_pack", "name": "17.3.3", "product": { "name": "17.3.3", "product_id": "CSAFPID-278019" } }, { "category": "service_pack", "name": "17.3.2a", "product": { "name": "17.3.2a", "product_id": "CSAFPID-280555" } } ], "category": "product_version", "name": "17.3" }, { "branches": [ { "category": "service_pack", "name": "17.4.1", "product": { "name": "17.4.1", "product_id": "CSAFPID-262588" } } ], "category": "product_version", "name": "17.4" } ], "category": "product_family", "name": "Cisco IOS XE Software" } ], "category": "vendor", "name": "Cisco" } ] }, "vulnerabilities": [ { "cve": "CVE-2021-34696", "ids": [ { "system_name": "Cisco Bug ID", "text": "CSCvw57495" } ], "notes": [ { "category": "other", "text": "Complete.", "title": "Affected Product Comprehensiveness" } ], "product_status": { "known_affected": [ "CSAFPID-206180", "CSAFPID-206192", "CSAFPID-206193", "CSAFPID-210079", "CSAFPID-210081", "CSAFPID-212268", "CSAFPID-212411", "CSAFPID-212412", "CSAFPID-213475", "CSAFPID-213476", "CSAFPID-213477", "CSAFPID-213557", "CSAFPID-213635", "CSAFPID-213776", "CSAFPID-213777", "CSAFPID-217234", "CSAFPID-217259", "CSAFPID-217262", "CSAFPID-217263", "CSAFPID-217264", "CSAFPID-217266", "CSAFPID-217267", "CSAFPID-217271", "CSAFPID-217272", "CSAFPID-217273", "CSAFPID-217276", "CSAFPID-218901", "CSAFPID-218903", "CSAFPID-218905", "CSAFPID-220517", "CSAFPID-220688", "CSAFPID-222257", "CSAFPID-222694", "CSAFPID-222942", "CSAFPID-223019", "CSAFPID-223241", "CSAFPID-225099", "CSAFPID-225168", "CSAFPID-225359", "CSAFPID-225466", "CSAFPID-225856", "CSAFPID-225858", "CSAFPID-226078", "CSAFPID-226354", "CSAFPID-227556", "CSAFPID-227918", "CSAFPID-227920", "CSAFPID-227923", "CSAFPID-228193", "CSAFPID-228194", "CSAFPID-228690", "CSAFPID-228706", "CSAFPID-229187", "CSAFPID-230301", "CSAFPID-230303", "CSAFPID-231454", "CSAFPID-231682", "CSAFPID-232008", "CSAFPID-232461", "CSAFPID-233155", "CSAFPID-233447", "CSAFPID-234928", "CSAFPID-235858", "CSAFPID-236837", "CSAFPID-237332", "CSAFPID-237460", "CSAFPID-238937", "CSAFPID-241736", "CSAFPID-242308", "CSAFPID-243362", "CSAFPID-244070", "CSAFPID-244912", "CSAFPID-245377", "CSAFPID-246386", "CSAFPID-251075", "CSAFPID-251166", "CSAFPID-251225", "CSAFPID-252235", "CSAFPID-252271", "CSAFPID-252914", "CSAFPID-254712", "CSAFPID-258229", "CSAFPID-258406", "CSAFPID-260741", "CSAFPID-261240", "CSAFPID-261241", "CSAFPID-261465", "CSAFPID-262390", "CSAFPID-262588", "CSAFPID-264096", "CSAFPID-264488", "CSAFPID-267605", "CSAFPID-268921", "CSAFPID-271798", "CSAFPID-272047", "CSAFPID-272932", "CSAFPID-273445", "CSAFPID-276837", "CSAFPID-277099", "CSAFPID-277147", "CSAFPID-277148", "CSAFPID-277338", "CSAFPID-277904", "CSAFPID-277945", "CSAFPID-278019", "CSAFPID-278780", "CSAFPID-280463", "CSAFPID-280555", "CSAFPID-280651", "CSAFPID-280652", "CSAFPID-280801", "CSAFPID-281438" ] }, "release_date": "2021-09-22T16:00:00+00:00", "remediations": [ { "category": "vendor_fix", "details": "Cisco has released software updates that address this vulnerability.", "product_ids": [ "CSAFPID-206180", "CSAFPID-206192", "CSAFPID-206193", "CSAFPID-210079", "CSAFPID-210081", "CSAFPID-212268", "CSAFPID-212411", "CSAFPID-212412", "CSAFPID-213475", "CSAFPID-213476", "CSAFPID-213477", "CSAFPID-213557", "CSAFPID-213635", "CSAFPID-213776", "CSAFPID-213777", "CSAFPID-217234", "CSAFPID-217259", "CSAFPID-217262", "CSAFPID-217263", "CSAFPID-217264", "CSAFPID-217266", "CSAFPID-217267", "CSAFPID-217271", "CSAFPID-217272", "CSAFPID-217273", "CSAFPID-217276", "CSAFPID-218901", "CSAFPID-218903", "CSAFPID-218905", "CSAFPID-220517", "CSAFPID-220688", "CSAFPID-222257", "CSAFPID-222694", "CSAFPID-222942", "CSAFPID-223019", "CSAFPID-223241", "CSAFPID-225099", "CSAFPID-225168", "CSAFPID-225359", "CSAFPID-225466", "CSAFPID-225856", "CSAFPID-225858", "CSAFPID-226078", "CSAFPID-226354", "CSAFPID-227556", "CSAFPID-227918", "CSAFPID-227920", "CSAFPID-227923", "CSAFPID-228193", "CSAFPID-228194", "CSAFPID-228690", "CSAFPID-228706", "CSAFPID-229187", "CSAFPID-230301", "CSAFPID-230303", "CSAFPID-231454", "CSAFPID-231682", "CSAFPID-232008", "CSAFPID-232461", "CSAFPID-233155", "CSAFPID-233447", "CSAFPID-234928", "CSAFPID-235858", "CSAFPID-236837", "CSAFPID-237332", "CSAFPID-237460", "CSAFPID-238937", "CSAFPID-241736", "CSAFPID-242308", "CSAFPID-243362", "CSAFPID-244070", "CSAFPID-244912", "CSAFPID-245377", "CSAFPID-246386", "CSAFPID-251075", "CSAFPID-251166", "CSAFPID-251225", "CSAFPID-252235", "CSAFPID-252271", "CSAFPID-252914", "CSAFPID-254712", "CSAFPID-258229", "CSAFPID-258406", "CSAFPID-260741", "CSAFPID-261240", "CSAFPID-261241", "CSAFPID-261465", "CSAFPID-262390", "CSAFPID-262588", "CSAFPID-264096", "CSAFPID-264488", "CSAFPID-267605", "CSAFPID-268921", "CSAFPID-271798", "CSAFPID-272047", "CSAFPID-272932", "CSAFPID-273445", "CSAFPID-276837", "CSAFPID-277099", "CSAFPID-277147", "CSAFPID-277148", "CSAFPID-277338", "CSAFPID-277904", "CSAFPID-277945", "CSAFPID-278019", "CSAFPID-278780", "CSAFPID-280463", "CSAFPID-280555", "CSAFPID-280651", "CSAFPID-280652", "CSAFPID-280801", "CSAFPID-281438" ], "url": "https://software.cisco.com" } ], "scores": [ { "cvss_v3": { "baseScore": 5.8, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N", "version": "3.1" }, "products": [ "CSAFPID-206180", "CSAFPID-206192", "CSAFPID-206193", "CSAFPID-210079", "CSAFPID-210081", "CSAFPID-212268", "CSAFPID-212411", "CSAFPID-212412", "CSAFPID-213475", "CSAFPID-213476", "CSAFPID-213477", "CSAFPID-213557", "CSAFPID-213635", "CSAFPID-213776", "CSAFPID-213777", "CSAFPID-217234", "CSAFPID-217259", "CSAFPID-217262", "CSAFPID-217263", "CSAFPID-217264", "CSAFPID-217266", "CSAFPID-217267", "CSAFPID-217271", "CSAFPID-217272", "CSAFPID-217273", "CSAFPID-217276", "CSAFPID-218901", "CSAFPID-218903", "CSAFPID-218905", "CSAFPID-220517", "CSAFPID-220688", "CSAFPID-222257", "CSAFPID-222694", "CSAFPID-222942", "CSAFPID-223019", "CSAFPID-223241", "CSAFPID-225099", "CSAFPID-225168", "CSAFPID-225359", "CSAFPID-225466", "CSAFPID-225856", "CSAFPID-225858", "CSAFPID-226078", "CSAFPID-226354", "CSAFPID-227556", "CSAFPID-227918", "CSAFPID-227920", "CSAFPID-227923", "CSAFPID-228193", "CSAFPID-228194", "CSAFPID-228690", "CSAFPID-228706", "CSAFPID-229187", "CSAFPID-230301", "CSAFPID-230303", "CSAFPID-231454", "CSAFPID-231682", "CSAFPID-232008", "CSAFPID-232461", "CSAFPID-233155", "CSAFPID-233447", "CSAFPID-234928", "CSAFPID-235858", "CSAFPID-236837", "CSAFPID-237332", "CSAFPID-237460", "CSAFPID-238937", "CSAFPID-241736", "CSAFPID-242308", "CSAFPID-243362", "CSAFPID-244070", "CSAFPID-244912", "CSAFPID-245377", "CSAFPID-246386", "CSAFPID-251075", "CSAFPID-251166", "CSAFPID-251225", "CSAFPID-252235", "CSAFPID-252271", "CSAFPID-252914", "CSAFPID-254712", "CSAFPID-258229", "CSAFPID-258406", "CSAFPID-260741", "CSAFPID-261240", "CSAFPID-261241", "CSAFPID-261465", "CSAFPID-262390", "CSAFPID-262588", "CSAFPID-264096", "CSAFPID-264488", "CSAFPID-267605", "CSAFPID-268921", "CSAFPID-271798", "CSAFPID-272047", "CSAFPID-272932", "CSAFPID-273445", "CSAFPID-276837", "CSAFPID-277099", "CSAFPID-277147", "CSAFPID-277148", "CSAFPID-277338", "CSAFPID-277904", "CSAFPID-277945", "CSAFPID-278019", "CSAFPID-278780", "CSAFPID-280463", "CSAFPID-280555", "CSAFPID-280651", "CSAFPID-280652", "CSAFPID-280801", "CSAFPID-281438" ] } ], "title": "Cisco ASR 900 and ASR 920 Series Aggregation Services Routers Access List Bypass Vulnerability" } ] }
cisco-sa-asr900acl-UeEyCxkv
Vulnerability from csaf_cisco
Published
2021-09-22 16:00
Modified
2021-09-22 16:00
Summary
Cisco ASR 900 and ASR 920 Series Aggregation Services Routers Access Control List Bypass Vulnerability
Notes
Summary
A vulnerability in the access control list (ACL) programming of Cisco ASR 900 and ASR 920 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass a configured ACL.
This vulnerability is due to incorrect programming of hardware when an ACL is configured using a method other than the configuration CLI. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
This advisory is part of the September 2021 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2021 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication. ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74581"]
Vulnerable Products
At the time of publication, this vulnerability affected the following Cisco products if they were running a vulnerable release of Cisco IOS XE Software and had an IPv4 ACL configured:
ASR 900 Series Aggregation Services Routers with Route Switch Processors (RSPs) 1, 2, or 3
ASR 920 Series Aggregation Services Routers
For information about which Cisco software releases are vulnerable, see the Fixed Software ["#fs"] section of this advisory.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products ["#vp"] section of this advisory are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect the following Cisco products:
IOS Software
IOS XR Software
Meraki products
NX-OS Software
Workarounds
There are no workarounds that address this vulnerability. However, administrators can reload the device to fix the ACL programming.
This vulnerability has not been found in ACLs that are manually configured using the CLI. However, there is no mechanism to determine whether an ACL has been correctly programmed on a device. Reloading the device will apply the correct programming to all ACLs and cause them to operate as configured, regardless of the method that was used for their initial configuration.
While this mitigation has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
Fixed Software
When considering software upgrades ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"], customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page ["https://www.cisco.com/go/psirt"], to determine exposure and a complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.
Cisco IOS and IOS XE Software
To help customers determine their exposure to vulnerabilities in Cisco IOS and IOS XE Software, Cisco provides the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] to identify any Cisco Security Advisories that impact a specific software release and the earliest release that fixes the vulnerabilities described in each advisory (“First Fixed”). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities described in all the advisories identified (“Combined First Fixed”).
Customers can use the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] to search advisories in the following ways:
Choose the software and one or more releases
Upload a .txt file that includes a list of specific releases
Enter the output of the show version command
After initiating a search, customers can customize the search to include all Cisco Security Advisories, a specific advisory, or all advisories in the most recent bundled publication.
Customers can also use the following form to determine whether a release is affected by any Cisco Security Advisory by entering a Cisco IOS or IOS XE Software release—for example, 15.1(4)M2 or 3.13.8S:
By default, the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] includes results only for vulnerabilities that have a Critical or High Security Impact Rating (SIR). To include results for Medium SIR vulnerabilities, customers can use the Cisco Software Checker on Cisco.com and check the Medium check box in the drop-down list under Impact Rating when customizing a search.
Vulnerability Policy
To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
Exploitation and Public Announcements
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
Source
Cisco would like to thank Gert Döring of SpaceNet for reporting this vulnerability.
Legal Disclaimer
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.
{ "document": { "acknowledgments": [ { "summary": "Cisco would like to thank Gert D\u00f6ring of SpaceNet for reporting this vulnerability." } ], "category": "csaf_security_advisory", "csaf_version": "2.0", "notes": [ { "category": "summary", "text": "A vulnerability in the access control list (ACL) programming of Cisco ASR 900 and ASR 920 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass a configured ACL.\r\n\r\nThis vulnerability is due to incorrect programming of hardware when an ACL is configured using a method other than the configuration CLI. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\n\r\n\r\nThis advisory is part of the September 2021 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2021 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication. [\"https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74581\"]", "title": "Summary" }, { "category": "general", "text": "At the time of publication, this vulnerability affected the following Cisco products if they were running a vulnerable release of Cisco IOS XE Software and had an IPv4 ACL configured:\r\n\r\nASR 900 Series Aggregation Services Routers with Route Switch Processors (RSPs) 1, 2, or 3\r\nASR 920 Series Aggregation Services Routers\r\n\r\nFor information about which Cisco software releases are vulnerable, see the Fixed Software [\"#fs\"] section of this advisory.", "title": "Vulnerable Products" }, { "category": "general", "text": "Only products listed in the Vulnerable Products [\"#vp\"] section of this advisory are known to be affected by this vulnerability.\r\n\r\nCisco has confirmed that this vulnerability does not affect the following Cisco products:\r\n\r\nIOS Software\r\nIOS XR Software\r\nMeraki products\r\nNX-OS Software", "title": "Products Confirmed Not Vulnerable" }, { "category": "general", "text": "There are no workarounds that address this vulnerability. However, administrators can reload the device to fix the ACL programming.\r\n\r\nThis vulnerability has not been found in ACLs that are manually configured using the CLI. However, there is no mechanism to determine whether an ACL has been correctly programmed on a device. Reloading the device will apply the correct programming to all ACLs and cause them to operate as configured, regardless of the method that was used for their initial configuration.\r\n\r\nWhile this mitigation has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.", "title": "Workarounds" }, { "category": "general", "text": "When considering software upgrades [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"], customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page [\"https://www.cisco.com/go/psirt\"], to determine exposure and a complete upgrade solution.\r\n\r\nIn all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.\r\n Cisco IOS and IOS XE Software\r\nTo help customers determine their exposure to vulnerabilities in Cisco IOS and IOS XE Software, Cisco provides the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] to identify any Cisco Security Advisories that impact a specific software release and the earliest release that fixes the vulnerabilities described in each advisory (\u201cFirst Fixed\u201d). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities described in all the advisories identified (\u201cCombined First Fixed\u201d).\r\n\r\nCustomers can use the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] to search advisories in the following ways:\r\n\r\nChoose the software and one or more releases\r\nUpload a .txt file that includes a list of specific releases\r\nEnter the output of the show version command\r\n\r\nAfter initiating a search, customers can customize the search to include all Cisco Security Advisories, a specific advisory, or all advisories in the most recent bundled publication.\r\n\r\nCustomers can also use the following form to determine whether a release is affected by any Cisco Security Advisory by entering a Cisco IOS or IOS XE Software release\u2014for example, 15.1(4)M2 or 3.13.8S:\r\n\r\n\r\n\r\nBy default, the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] includes results only for vulnerabilities that have a Critical or High Security Impact Rating (SIR). To include results for Medium SIR vulnerabilities, customers can use the Cisco Software Checker on Cisco.com and check the Medium check box in the drop-down list under Impact Rating when customizing a search.", "title": "Fixed Software" }, { "category": "general", "text": "To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html\"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.", "title": "Vulnerability Policy" }, { "category": "general", "text": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.", "title": "Exploitation and Public Announcements" }, { "category": "general", "text": "Cisco would like to thank Gert D\u00f6ring of SpaceNet for reporting this vulnerability.", "title": "Source" }, { "category": "legal_disclaimer", "text": "THIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.\r\n\r\nA standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.", "title": "Legal Disclaimer" } ], "publisher": { "category": "vendor", "contact_details": "psirt@cisco.com", "issuing_authority": "Cisco PSIRT", "name": "Cisco", "namespace": "https://wwww.cisco.com" }, "references": [ { "category": "self", "summary": "Cisco ASR 900 and ASR 920 Series Aggregation Services Routers Access Control List Bypass Vulnerability", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr900acl-UeEyCxkv" }, { "category": "external", "summary": "Cisco Event Response: September 2021 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication", "url": "https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74581" }, { "category": "external", "summary": "Cisco Security Vulnerability Policy", "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html" }, { "category": "external", "summary": "considering software upgrades", "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes" }, { "category": "external", "summary": "Cisco\u0026nbsp;Security Advisories page", "url": "https://www.cisco.com/go/psirt" }, { "category": "external", "summary": "Cisco\u0026nbsp;Software Checker", "url": "https://sec.cloudapps.cisco.com/security/center/softwarechecker.x" } ], "title": "Cisco ASR 900 and ASR 920 Series Aggregation Services Routers Access Control List Bypass Vulnerability", "tracking": { "current_release_date": "2021-09-22T16:00:00+00:00", "generator": { "date": "2024-05-10T23:09:27+00:00", "engine": { "name": "TVCE" } }, "id": "cisco-sa-asr900acl-UeEyCxkv", "initial_release_date": "2021-09-22T16:00:00+00:00", "revision_history": [ { "date": "2021-09-22T15:48:43+00:00", "number": "1.0.0", "summary": "Initial public release." } ], "status": "final", "version": "1.0.0" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "branches": [ { "category": "service_pack", "name": "3.13.4S", "product": { "name": "3.13.4S", "product_id": "CSAFPID-213475" } }, { "category": "service_pack", "name": "3.13.5S", "product": { "name": "3.13.5S", "product_id": "CSAFPID-213557" } }, { "category": "service_pack", "name": "3.13.6S", "product": { "name": "3.13.6S", "product_id": "CSAFPID-217262" } }, { "category": "service_pack", "name": "3.13.7S", "product": { "name": "3.13.7S", "product_id": "CSAFPID-217263" } }, { "category": "service_pack", "name": "3.13.6aS", "product": { "name": "3.13.6aS", "product_id": "CSAFPID-220688" } }, { "category": "service_pack", "name": "3.13.8S", "product": { "name": "3.13.8S", "product_id": "CSAFPID-227923" } }, { "category": "service_pack", "name": "3.13.9S", "product": { "name": "3.13.9S", "product_id": "CSAFPID-231454" } }, { "category": "service_pack", "name": "3.13.10S", "product": { "name": "3.13.10S", "product_id": "CSAFPID-234928" } } ], "category": "product_version", "name": "3.13S" }, { "branches": [ { "category": "service_pack", "name": "3.14.3S", "product": { "name": "3.14.3S", "product_id": "CSAFPID-206192" } }, { "category": "service_pack", "name": "3.14.4S", "product": { "name": "3.14.4S", "product_id": "CSAFPID-206193" } } ], "category": "product_version", "name": "3.14S" }, { "branches": [ { "category": "service_pack", "name": "3.15.0S", "product": { "name": "3.15.0S", "product_id": "CSAFPID-206180" } }, { "category": "service_pack", "name": "3.15.1S", "product": { "name": "3.15.1S", "product_id": "CSAFPID-210079" } }, { "category": "service_pack", "name": "3.15.2S", "product": { "name": "3.15.2S", "product_id": "CSAFPID-212268" } }, { "category": "service_pack", "name": "3.15.3S", "product": { "name": "3.15.3S", "product_id": "CSAFPID-213776" } }, { "category": "service_pack", "name": "3.15.4S", "product": { "name": "3.15.4S", "product_id": "CSAFPID-217264" } } ], "category": "product_version", "name": "3.15S" }, { "branches": [ { "category": "service_pack", "name": "3.16.0S", "product": { "name": "3.16.0S", "product_id": "CSAFPID-210081" } }, { "category": "service_pack", "name": "3.16.0aS", "product": { "name": "3.16.0aS", "product_id": "CSAFPID-213476" } }, { "category": "service_pack", "name": "3.16.1aS", "product": { "name": "3.16.1aS", "product_id": "CSAFPID-213477" } }, { "category": "service_pack", "name": "3.16.2aS", "product": { "name": "3.16.2aS", "product_id": "CSAFPID-213635" } }, { "category": "service_pack", "name": "3.16.0bS", "product": { "name": "3.16.0bS", "product_id": "CSAFPID-213777" } }, { "category": "service_pack", "name": "3.16.3aS", "product": { "name": "3.16.3aS", "product_id": "CSAFPID-217266" } }, { "category": "service_pack", "name": "3.16.4S", "product": { "name": "3.16.4S", "product_id": "CSAFPID-217267" } }, { "category": "service_pack", "name": "3.16.4bS", "product": { "name": "3.16.4bS", "product_id": "CSAFPID-222257" } }, { "category": "service_pack", "name": "3.16.5S", "product": { "name": "3.16.5S", "product_id": "CSAFPID-222694" } }, { "category": "service_pack", "name": "3.16.6S", "product": { "name": "3.16.6S", "product_id": "CSAFPID-225099" } }, { "category": "service_pack", "name": "3.16.5aS", "product": { "name": "3.16.5aS", "product_id": "CSAFPID-225466" } }, { "category": "service_pack", "name": "3.16.7S", "product": { "name": "3.16.7S", "product_id": "CSAFPID-228690" } }, { "category": "service_pack", "name": "3.16.6bS", "product": { "name": "3.16.6bS", "product_id": "CSAFPID-230303" } }, { "category": "service_pack", "name": "3.16.7bS", "product": { "name": "3.16.7bS", "product_id": "CSAFPID-233447" } }, { "category": "service_pack", "name": "3.16.8S", "product": { "name": "3.16.8S", "product_id": "CSAFPID-238937" } }, { "category": "service_pack", "name": "3.16.9S", "product": { "name": "3.16.9S", "product_id": "CSAFPID-244912" } }, { "category": "service_pack", "name": "3.16.10S", "product": { "name": "3.16.10S", "product_id": "CSAFPID-258406" } } ], "category": "product_version", "name": "3.16S" }, { "branches": [ { "category": "service_pack", "name": "3.17.0S", "product": { "name": "3.17.0S", "product_id": "CSAFPID-212411" } }, { "category": "service_pack", "name": "3.17.1S", "product": { "name": "3.17.1S", "product_id": "CSAFPID-212412" } }, { "category": "service_pack", "name": "3.17.2S", "product": { "name": "3.17.2S", "product_id": "CSAFPID-217234" } }, { "category": "service_pack", "name": "3.17.3S", "product": { "name": "3.17.3S", "product_id": "CSAFPID-222942" } }, { "category": "service_pack", "name": "3.17.4S", "product": { "name": "3.17.4S", "product_id": "CSAFPID-227556" } } ], "category": "product_version", "name": "3.17S" }, { "branches": [ { "category": "service_pack", "name": "16.5.1", "product": { "name": "16.5.1", "product_id": "CSAFPID-217259" } }, { "category": "service_pack", "name": "16.5.2", "product": { "name": "16.5.2", "product_id": "CSAFPID-229187" } }, { "category": "service_pack", "name": "16.5.3", "product": { "name": "16.5.3", "product_id": "CSAFPID-232461" } } ], "category": "product_version", "name": "16.5" }, { "branches": [ { "category": "service_pack", "name": "3.18.0S", "product": { "name": "3.18.0S", "product_id": "CSAFPID-217271" } }, { "category": "service_pack", "name": "3.18.1S", "product": { "name": "3.18.1S", "product_id": "CSAFPID-217272" } }, { "category": "service_pack", "name": "3.18.2S", "product": { "name": "3.18.2S", "product_id": "CSAFPID-217273" } }, { "category": "service_pack", "name": "3.18.3S", "product": { "name": "3.18.3S", "product_id": "CSAFPID-226078" } }, { "category": "service_pack", "name": "3.18.4S", "product": { "name": "3.18.4S", "product_id": "CSAFPID-228193" } } ], "category": "product_version", "name": "3.18S" }, { "branches": [ { "category": "service_pack", "name": "3.18.0SP", "product": { "name": "3.18.0SP", "product_id": "CSAFPID-217276" } }, { "category": "service_pack", "name": "3.18.1SP", "product": { "name": "3.18.1SP", "product_id": "CSAFPID-220517" } }, { "category": "service_pack", "name": "3.18.1gSP", "product": { "name": "3.18.1gSP", "product_id": "CSAFPID-223019" } }, { "category": "service_pack", "name": "3.18.1bSP", "product": { "name": "3.18.1bSP", "product_id": "CSAFPID-223241" } }, { "category": "service_pack", "name": "3.18.2SP", "product": { "name": "3.18.2SP", "product_id": "CSAFPID-225168" } }, { "category": "service_pack", "name": "3.18.1hSP", "product": { "name": "3.18.1hSP", "product_id": "CSAFPID-225359" } }, { "category": "service_pack", "name": "3.18.1iSP", "product": { "name": "3.18.1iSP", "product_id": "CSAFPID-226354" } }, { "category": "service_pack", "name": "3.18.3SP", "product": { "name": "3.18.3SP", "product_id": "CSAFPID-228194" } }, { "category": "service_pack", "name": "3.18.4SP", "product": { "name": "3.18.4SP", "product_id": "CSAFPID-230301" } }, { "category": "service_pack", "name": "3.18.5SP", "product": { "name": "3.18.5SP", "product_id": "CSAFPID-237332" } }, { "category": "service_pack", "name": "3.18.6SP", "product": { "name": "3.18.6SP", "product_id": "CSAFPID-246386" } }, { "category": "service_pack", "name": "3.18.7SP", "product": { "name": "3.18.7SP", "product_id": "CSAFPID-264488" } }, { "category": "service_pack", "name": "3.18.8aSP", "product": { "name": "3.18.8aSP", "product_id": "CSAFPID-277904" } }, { "category": "service_pack", "name": "3.18.9SP", "product": { "name": "3.18.9SP", "product_id": "CSAFPID-278780" } } ], "category": "product_version", "name": "3.18SP" }, { "branches": [ { "category": "service_pack", "name": "16.6.1", "product": { "name": "16.6.1", "product_id": "CSAFPID-218901" } }, { "category": "service_pack", "name": "16.6.2", "product": { "name": "16.6.2", "product_id": "CSAFPID-228706" } }, { "category": "service_pack", "name": "16.6.3", "product": { "name": "16.6.3", "product_id": "CSAFPID-231682" } }, { "category": "service_pack", "name": "16.6.4", "product": { "name": "16.6.4", "product_id": "CSAFPID-233155" } }, { "category": "service_pack", "name": "16.6.5", "product": { "name": "16.6.5", "product_id": "CSAFPID-241736" } }, { "category": "service_pack", "name": "16.6.5a", "product": { "name": "16.6.5a", "product_id": "CSAFPID-252235" } }, { "category": "service_pack", "name": "16.6.6", "product": { "name": "16.6.6", "product_id": "CSAFPID-252914" } }, { "category": "service_pack", "name": "16.6.7", "product": { "name": "16.6.7", "product_id": "CSAFPID-261241" } }, { "category": "service_pack", "name": "16.6.8", "product": { "name": "16.6.8", "product_id": "CSAFPID-277148" } }, { "category": "service_pack", "name": "16.6.9", "product": { "name": "16.6.9", "product_id": "CSAFPID-280801" } } ], "category": "product_version", "name": "16.6" }, { "branches": [ { "category": "service_pack", "name": "16.7.1", "product": { "name": "16.7.1", "product_id": "CSAFPID-218903" } }, { "category": "service_pack", "name": "16.7.2", "product": { "name": "16.7.2", "product_id": "CSAFPID-236837" } }, { "category": "service_pack", "name": "16.7.3", "product": { "name": "16.7.3", "product_id": "CSAFPID-244070" } } ], "category": "product_version", "name": "16.7" }, { "branches": [ { "category": "service_pack", "name": "16.8.1", "product": { "name": "16.8.1", "product_id": "CSAFPID-218905" } }, { "category": "service_pack", "name": "16.8.1b", "product": { "name": "16.8.1b", "product_id": "CSAFPID-235858" } }, { "category": "service_pack", "name": "16.8.1c", "product": { "name": "16.8.1c", "product_id": "CSAFPID-237460" } } ], "category": "product_version", "name": "16.8" }, { "branches": [ { "category": "service_pack", "name": "16.9.1", "product": { "name": "16.9.1", "product_id": "CSAFPID-225856" } }, { "category": "service_pack", "name": "16.9.2", "product": { "name": "16.9.2", "product_id": "CSAFPID-232008" } }, { "category": "service_pack", "name": "16.9.1a", "product": { "name": "16.9.1a", "product_id": "CSAFPID-242308" } }, { "category": "service_pack", "name": "16.9.1b", "product": { "name": "16.9.1b", "product_id": "CSAFPID-243362" } }, { "category": "service_pack", "name": "16.9.3", "product": { "name": "16.9.3", "product_id": "CSAFPID-251075" } }, { "category": "service_pack", "name": "16.9.2a", "product": { "name": "16.9.2a", "product_id": "CSAFPID-251166" } }, { "category": "service_pack", "name": "16.9.3h", "product": { "name": "16.9.3h", "product_id": "CSAFPID-258229" } }, { "category": "service_pack", "name": "16.9.4", "product": { "name": "16.9.4", "product_id": "CSAFPID-262390" } }, { "category": "service_pack", "name": "16.9.4c", "product": { "name": "16.9.4c", "product_id": "CSAFPID-268921" } }, { "category": "service_pack", "name": "16.9.5", "product": { "name": "16.9.5", "product_id": "CSAFPID-271798" } }, { "category": "service_pack", "name": "16.9.5f", "product": { "name": "16.9.5f", "product_id": "CSAFPID-276837" } }, { "category": "service_pack", "name": "16.9.6", "product": { "name": "16.9.6", "product_id": "CSAFPID-277945" } }, { "category": "service_pack", "name": "16.9.7", "product": { "name": "16.9.7", "product_id": "CSAFPID-280651" } } ], "category": "product_version", "name": "16.9" }, { "branches": [ { "category": "service_pack", "name": "16.10.1", "product": { "name": "16.10.1", "product_id": "CSAFPID-225858" } } ], "category": "product_version", "name": "16.10" }, { "branches": [ { "category": "service_pack", "name": "16.11.1", "product": { "name": "16.11.1", "product_id": "CSAFPID-227918" } }, { "category": "service_pack", "name": "16.11.1a", "product": { "name": "16.11.1a", "product_id": "CSAFPID-252271" } }, { "category": "service_pack", "name": "16.11.1b", "product": { "name": "16.11.1b", "product_id": "CSAFPID-260741" } }, { "category": "service_pack", "name": "16.11.2", "product": { "name": "16.11.2", "product_id": "CSAFPID-261240" } }, { "category": "service_pack", "name": "16.11.1s", "product": { "name": "16.11.1s", "product_id": "CSAFPID-261465" } }, { "category": "service_pack", "name": "16.11.1c", "product": { "name": "16.11.1c", "product_id": "CSAFPID-264096" } } ], "category": "product_version", "name": "16.11" }, { "branches": [ { "category": "service_pack", "name": "16.12.1", "product": { "name": "16.12.1", "product_id": "CSAFPID-227920" } }, { "category": "service_pack", "name": "16.12.2", "product": { "name": "16.12.2", "product_id": "CSAFPID-267605" } }, { "category": "service_pack", "name": "16.12.2a", "product": { "name": "16.12.2a", "product_id": "CSAFPID-272047" } }, { "category": "service_pack", "name": "16.12.3", "product": { "name": "16.12.3", "product_id": "CSAFPID-273445" } }, { "category": "service_pack", "name": "16.12.4", "product": { "name": "16.12.4", "product_id": "CSAFPID-277147" } }, { "category": "service_pack", "name": "16.12.5", "product": { "name": "16.12.5", "product_id": "CSAFPID-280463" } }, { "category": "service_pack", "name": "16.12.5a", "product": { "name": "16.12.5a", "product_id": "CSAFPID-281438" } } ], "category": "product_version", "name": "16.12" }, { "branches": [ { "category": "service_pack", "name": "17.1.1", "product": { "name": "17.1.1", "product_id": "CSAFPID-245377" } }, { "category": "service_pack", "name": "17.1.1a", "product": { "name": "17.1.1a", "product_id": "CSAFPID-272932" } }, { "category": "service_pack", "name": "17.1.2", "product": { "name": "17.1.2", "product_id": "CSAFPID-277338" } }, { "category": "service_pack", "name": "17.1.3", "product": { "name": "17.1.3", "product_id": "CSAFPID-280652" } } ], "category": "product_version", "name": "17.1" }, { "branches": [ { "category": "service_pack", "name": "17.2.1", "product": { "name": "17.2.1", "product_id": "CSAFPID-251225" } } ], "category": "product_version", "name": "17.2" }, { "branches": [ { "category": "service_pack", "name": "17.3.1", "product": { "name": "17.3.1", "product_id": "CSAFPID-254712" } }, { "category": "service_pack", "name": "17.3.2", "product": { "name": "17.3.2", "product_id": "CSAFPID-277099" } }, { "category": "service_pack", "name": "17.3.3", "product": { "name": "17.3.3", "product_id": "CSAFPID-278019" } }, { "category": "service_pack", "name": "17.3.2a", "product": { "name": "17.3.2a", "product_id": "CSAFPID-280555" } } ], "category": "product_version", "name": "17.3" }, { "branches": [ { "category": "service_pack", "name": "17.4.1", "product": { "name": "17.4.1", "product_id": "CSAFPID-262588" } } ], "category": "product_version", "name": "17.4" } ], "category": "product_family", "name": "Cisco IOS XE Software" } ], "category": "vendor", "name": "Cisco" } ] }, "vulnerabilities": [ { "cve": "CVE-2021-34696", "ids": [ { "system_name": "Cisco Bug ID", "text": "CSCvw57495" } ], "notes": [ { "category": "other", "text": "Complete.", "title": "Affected Product Comprehensiveness" } ], "product_status": { "known_affected": [ "CSAFPID-206180", "CSAFPID-206192", "CSAFPID-206193", "CSAFPID-210079", "CSAFPID-210081", "CSAFPID-212268", "CSAFPID-212411", "CSAFPID-212412", "CSAFPID-213475", "CSAFPID-213476", "CSAFPID-213477", "CSAFPID-213557", "CSAFPID-213635", "CSAFPID-213776", "CSAFPID-213777", "CSAFPID-217234", "CSAFPID-217259", "CSAFPID-217262", "CSAFPID-217263", "CSAFPID-217264", "CSAFPID-217266", "CSAFPID-217267", "CSAFPID-217271", "CSAFPID-217272", "CSAFPID-217273", "CSAFPID-217276", "CSAFPID-218901", "CSAFPID-218903", "CSAFPID-218905", "CSAFPID-220517", "CSAFPID-220688", "CSAFPID-222257", "CSAFPID-222694", "CSAFPID-222942", "CSAFPID-223019", "CSAFPID-223241", "CSAFPID-225099", "CSAFPID-225168", "CSAFPID-225359", "CSAFPID-225466", "CSAFPID-225856", "CSAFPID-225858", "CSAFPID-226078", "CSAFPID-226354", "CSAFPID-227556", "CSAFPID-227918", "CSAFPID-227920", "CSAFPID-227923", "CSAFPID-228193", "CSAFPID-228194", "CSAFPID-228690", "CSAFPID-228706", "CSAFPID-229187", "CSAFPID-230301", "CSAFPID-230303", "CSAFPID-231454", "CSAFPID-231682", "CSAFPID-232008", "CSAFPID-232461", "CSAFPID-233155", "CSAFPID-233447", "CSAFPID-234928", "CSAFPID-235858", "CSAFPID-236837", "CSAFPID-237332", "CSAFPID-237460", "CSAFPID-238937", "CSAFPID-241736", "CSAFPID-242308", "CSAFPID-243362", "CSAFPID-244070", "CSAFPID-244912", "CSAFPID-245377", "CSAFPID-246386", "CSAFPID-251075", "CSAFPID-251166", "CSAFPID-251225", "CSAFPID-252235", "CSAFPID-252271", "CSAFPID-252914", "CSAFPID-254712", "CSAFPID-258229", "CSAFPID-258406", "CSAFPID-260741", "CSAFPID-261240", "CSAFPID-261241", "CSAFPID-261465", "CSAFPID-262390", "CSAFPID-262588", "CSAFPID-264096", "CSAFPID-264488", "CSAFPID-267605", "CSAFPID-268921", "CSAFPID-271798", "CSAFPID-272047", "CSAFPID-272932", "CSAFPID-273445", "CSAFPID-276837", "CSAFPID-277099", "CSAFPID-277147", "CSAFPID-277148", "CSAFPID-277338", "CSAFPID-277904", "CSAFPID-277945", "CSAFPID-278019", "CSAFPID-278780", "CSAFPID-280463", "CSAFPID-280555", "CSAFPID-280651", "CSAFPID-280652", "CSAFPID-280801", "CSAFPID-281438" ] }, "release_date": "2021-09-22T16:00:00+00:00", "remediations": [ { "category": "vendor_fix", "details": "Cisco has released software updates that address this vulnerability.", "product_ids": [ "CSAFPID-206180", "CSAFPID-206192", "CSAFPID-206193", "CSAFPID-210079", "CSAFPID-210081", "CSAFPID-212268", "CSAFPID-212411", "CSAFPID-212412", "CSAFPID-213475", "CSAFPID-213476", "CSAFPID-213477", "CSAFPID-213557", "CSAFPID-213635", "CSAFPID-213776", "CSAFPID-213777", "CSAFPID-217234", "CSAFPID-217259", "CSAFPID-217262", "CSAFPID-217263", "CSAFPID-217264", "CSAFPID-217266", "CSAFPID-217267", "CSAFPID-217271", "CSAFPID-217272", "CSAFPID-217273", "CSAFPID-217276", "CSAFPID-218901", "CSAFPID-218903", "CSAFPID-218905", "CSAFPID-220517", "CSAFPID-220688", "CSAFPID-222257", "CSAFPID-222694", "CSAFPID-222942", "CSAFPID-223019", "CSAFPID-223241", "CSAFPID-225099", "CSAFPID-225168", "CSAFPID-225359", "CSAFPID-225466", "CSAFPID-225856", "CSAFPID-225858", "CSAFPID-226078", "CSAFPID-226354", "CSAFPID-227556", "CSAFPID-227918", "CSAFPID-227920", "CSAFPID-227923", "CSAFPID-228193", "CSAFPID-228194", "CSAFPID-228690", "CSAFPID-228706", "CSAFPID-229187", "CSAFPID-230301", "CSAFPID-230303", "CSAFPID-231454", "CSAFPID-231682", "CSAFPID-232008", "CSAFPID-232461", "CSAFPID-233155", "CSAFPID-233447", "CSAFPID-234928", "CSAFPID-235858", "CSAFPID-236837", "CSAFPID-237332", "CSAFPID-237460", "CSAFPID-238937", "CSAFPID-241736", "CSAFPID-242308", "CSAFPID-243362", "CSAFPID-244070", "CSAFPID-244912", "CSAFPID-245377", "CSAFPID-246386", "CSAFPID-251075", "CSAFPID-251166", "CSAFPID-251225", "CSAFPID-252235", "CSAFPID-252271", "CSAFPID-252914", "CSAFPID-254712", "CSAFPID-258229", "CSAFPID-258406", "CSAFPID-260741", "CSAFPID-261240", "CSAFPID-261241", "CSAFPID-261465", "CSAFPID-262390", "CSAFPID-262588", "CSAFPID-264096", "CSAFPID-264488", "CSAFPID-267605", "CSAFPID-268921", "CSAFPID-271798", "CSAFPID-272047", "CSAFPID-272932", "CSAFPID-273445", "CSAFPID-276837", "CSAFPID-277099", "CSAFPID-277147", "CSAFPID-277148", "CSAFPID-277338", "CSAFPID-277904", "CSAFPID-277945", "CSAFPID-278019", "CSAFPID-278780", "CSAFPID-280463", "CSAFPID-280555", "CSAFPID-280651", "CSAFPID-280652", "CSAFPID-280801", "CSAFPID-281438" ], "url": "https://software.cisco.com" } ], "scores": [ { "cvss_v3": { "baseScore": 5.8, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N", "version": "3.1" }, "products": [ "CSAFPID-206180", "CSAFPID-206192", "CSAFPID-206193", "CSAFPID-210079", "CSAFPID-210081", "CSAFPID-212268", "CSAFPID-212411", "CSAFPID-212412", "CSAFPID-213475", "CSAFPID-213476", "CSAFPID-213477", "CSAFPID-213557", "CSAFPID-213635", "CSAFPID-213776", "CSAFPID-213777", "CSAFPID-217234", "CSAFPID-217259", "CSAFPID-217262", "CSAFPID-217263", "CSAFPID-217264", "CSAFPID-217266", "CSAFPID-217267", "CSAFPID-217271", "CSAFPID-217272", "CSAFPID-217273", "CSAFPID-217276", "CSAFPID-218901", "CSAFPID-218903", "CSAFPID-218905", "CSAFPID-220517", "CSAFPID-220688", "CSAFPID-222257", "CSAFPID-222694", "CSAFPID-222942", "CSAFPID-223019", "CSAFPID-223241", "CSAFPID-225099", "CSAFPID-225168", "CSAFPID-225359", "CSAFPID-225466", "CSAFPID-225856", "CSAFPID-225858", "CSAFPID-226078", "CSAFPID-226354", "CSAFPID-227556", "CSAFPID-227918", "CSAFPID-227920", "CSAFPID-227923", "CSAFPID-228193", "CSAFPID-228194", "CSAFPID-228690", "CSAFPID-228706", "CSAFPID-229187", "CSAFPID-230301", "CSAFPID-230303", "CSAFPID-231454", "CSAFPID-231682", "CSAFPID-232008", "CSAFPID-232461", "CSAFPID-233155", "CSAFPID-233447", "CSAFPID-234928", "CSAFPID-235858", "CSAFPID-236837", "CSAFPID-237332", "CSAFPID-237460", "CSAFPID-238937", "CSAFPID-241736", "CSAFPID-242308", "CSAFPID-243362", "CSAFPID-244070", "CSAFPID-244912", "CSAFPID-245377", "CSAFPID-246386", "CSAFPID-251075", "CSAFPID-251166", "CSAFPID-251225", "CSAFPID-252235", "CSAFPID-252271", "CSAFPID-252914", "CSAFPID-254712", "CSAFPID-258229", "CSAFPID-258406", "CSAFPID-260741", "CSAFPID-261240", "CSAFPID-261241", "CSAFPID-261465", "CSAFPID-262390", "CSAFPID-262588", "CSAFPID-264096", "CSAFPID-264488", "CSAFPID-267605", "CSAFPID-268921", "CSAFPID-271798", "CSAFPID-272047", "CSAFPID-272932", "CSAFPID-273445", "CSAFPID-276837", "CSAFPID-277099", "CSAFPID-277147", "CSAFPID-277148", "CSAFPID-277338", "CSAFPID-277904", "CSAFPID-277945", "CSAFPID-278019", "CSAFPID-278780", "CSAFPID-280463", "CSAFPID-280555", "CSAFPID-280651", "CSAFPID-280652", "CSAFPID-280801", "CSAFPID-281438" ] } ], "title": "Cisco ASR 900 and ASR 920 Series Aggregation Services Routers Access List Bypass Vulnerability" } ] }
gsd-2021-34696
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
A vulnerability in the access control list (ACL) programming of Cisco ASR 900 and ASR 920 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to incorrect programming of hardware when an ACL is configured using a method other than the configuration CLI. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.
Aliases
Aliases
{ "GSD": { "alias": "CVE-2021-34696", "description": "A vulnerability in the access control list (ACL) programming of Cisco ASR 900 and ASR 920 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to incorrect programming of hardware when an ACL is configured using a method other than the configuration CLI. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.", "id": "GSD-2021-34696" }, "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2021-34696" ], "details": "A vulnerability in the access control list (ACL) programming of Cisco ASR 900 and ASR 920 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to incorrect programming of hardware when an ACL is configured using a method other than the configuration CLI. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.", "id": "GSD-2021-34696", "modified": "2023-12-13T01:23:13.821633Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "psirt@cisco.com", "DATE_PUBLIC": "2021-09-22T16:00:00", "ID": "CVE-2021-34696", "STATE": "PUBLIC", "TITLE": "Cisco ASR 900 and ASR 920 Series Aggregation Services Routers Access Control List Bypass Vulnerability" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Cisco IOS XE Software ", "version": { "version_data": [ { "version_value": "n/a" } ] } } ] }, "vendor_name": "Cisco" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "A vulnerability in the access control list (ACL) programming of Cisco ASR 900 and ASR 920 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to incorrect programming of hardware when an ACL is configured using a method other than the configuration CLI. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device." } ] }, "exploit": [ { "lang": "eng", "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. " } ], "impact": { "cvss": { "baseScore": "5.8", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N ", "version": "3.0" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-284" } ] } ] }, "references": { "reference_data": [ { "name": "20210922 Cisco ASR 900 and ASR 920 Series Aggregation Services Routers Access Control List Bypass Vulnerability", "refsource": "CISCO", "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr900acl-UeEyCxkv" } ] }, "source": { "advisory": "cisco-sa-asr900acl-UeEyCxkv", "defect": [ [ "CSCvw57495" ] ], "discovery": "INTERNAL" } }, "nvd.nist.gov": { "configurations": { "CVE_data_version": "4.0", "nodes": [ { "children": [ { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*", "cpe_name": [], "versionEndIncluding": "17.3.2", "vulnerable": true } ], "operator": "OR" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:h:cisco:asr_902:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_903:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_907:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_920-10sz-pd:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_920-10sz-pd_r:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_920-12cz-a:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_920-12cz-a_r:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_920-12cz-d:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_920-12cz-d_r:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_920-12sz-im:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_920-12sz-im_r:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_920-24sz-im:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_920-24sz-im_r:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_920-24sz-m:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_920-24sz-m_r:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_920-24tz-m:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_920-24tz-m_r:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_920-4sz-a:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_920-4sz-a_r:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_920-4sz-d:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_920-4sz-d_r:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false }, { "cpe23Uri": "cpe:2.3:h:cisco:asr_920u-12sz-im:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false } ], "operator": "OR" } ], "cpe_match": [], "operator": "AND" } ] }, "cve": { "CVE_data_meta": { "ASSIGNER": "psirt@cisco.com", "ID": "CVE-2021-34696" }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "en", "value": "A vulnerability in the access control list (ACL) programming of Cisco ASR 900 and ASR 920 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to incorrect programming of hardware when an ACL is configured using a method other than the configuration CLI. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "en", "value": "NVD-CWE-Other" } ] } ] }, "references": { "reference_data": [ { "name": "20210922 Cisco ASR 900 and ASR 920 Series Aggregation Services Routers Access Control List Bypass Vulnerability", "refsource": "CISCO", "tags": [ "Vendor Advisory" ], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr900acl-UeEyCxkv" } ] } }, "impact": { "baseMetricV2": { "acInsufInfo": false, "cvssV2": { "accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0" }, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "severity": "MEDIUM", "userInteractionRequired": false }, "baseMetricV3": { "cvssV3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N", "version": "3.1" }, "exploitabilityScore": 3.9, "impactScore": 1.4 } }, "lastModifiedDate": "2021-10-05T17:48Z", "publishedDate": "2021-09-23T03:15Z" } } }
ghsa-28xr-x3rf-rhgr
Vulnerability from github
Published
2022-05-24 19:15
Modified
2022-05-24 19:15
Details
A vulnerability in the access control list (ACL) programming of Cisco ASR 900 and ASR 920 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to incorrect programming of hardware when an ACL is configured using a method other than the configuration CLI. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.
{ "affected": [], "aliases": [ "CVE-2021-34696" ], "database_specific": { "cwe_ids": [], "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2021-09-23T03:15:00Z", "severity": "MODERATE" }, "details": "A vulnerability in the access control list (ACL) programming of Cisco ASR 900 and ASR 920 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to incorrect programming of hardware when an ACL is configured using a method other than the configuration CLI. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.", "id": "GHSA-28xr-x3rf-rhgr", "modified": "2022-05-24T19:15:39Z", "published": "2022-05-24T19:15:39Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-34696" }, { "type": "WEB", "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr900acl-UeEyCxkv" } ], "schema_version": "1.4.0", "severity": [] }
fkie_cve-2021-34696
Vulnerability from fkie_nvd
Published
2021-09-23 03:15
Modified
2024-11-21 06:10
Severity ?
5.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
5.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
5.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Summary
A vulnerability in the access control list (ACL) programming of Cisco ASR 900 and ASR 920 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to incorrect programming of hardware when an ACL is configured using a method other than the configuration CLI. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.
References
Impacted products
Vendor | Product | Version | |
---|---|---|---|
cisco | ios_xe | * | |
cisco | asr_902 | - | |
cisco | asr_903 | - | |
cisco | asr_907 | - | |
cisco | asr_920-10sz-pd | - | |
cisco | asr_920-10sz-pd_r | - | |
cisco | asr_920-12cz-a | - | |
cisco | asr_920-12cz-a_r | - | |
cisco | asr_920-12cz-d | - | |
cisco | asr_920-12cz-d_r | - | |
cisco | asr_920-12sz-im | - | |
cisco | asr_920-12sz-im_r | - | |
cisco | asr_920-24sz-im | - | |
cisco | asr_920-24sz-im_r | - | |
cisco | asr_920-24sz-m | - | |
cisco | asr_920-24sz-m_r | - | |
cisco | asr_920-24tz-m | - | |
cisco | asr_920-24tz-m_r | - | |
cisco | asr_920-4sz-a | - | |
cisco | asr_920-4sz-a_r | - | |
cisco | asr_920-4sz-d | - | |
cisco | asr_920-4sz-d_r | - | |
cisco | asr_920u-12sz-im | - |
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This vulnerability is due to incorrect programming of hardware when an ACL is configured using a method other than the configuration CLI. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device." }, { "lang": "es", "value": "Una vulnerabilidad en la programaci\u00f3n de la lista de control de acceso (ACL) de Cisco ASR 900 and ASR 920 Series Aggregation Services Routers podr\u00eda permitir a un atacante remoto no autenticado omitir una ACL configurada. Esta vulnerabilidad es debido a la programaci\u00f3n incorrecta del hardware cuando se configura una ACL mediante un m\u00e9todo distinto de la CLI de configuraci\u00f3n. Un atacante podr\u00eda explotar esta vulnerabilidad al intentar enviar tr\u00e1fico mediante un dispositivo afectado. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante omitir una ACL en el dispositivo afectado" } ], "id": "CVE-2021-34696", "lastModified": "2024-11-21T06:10:58.117", "metrics": { "cvssMetricV2": [ { "acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": { "accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0" }, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false } ], "cvssMetricV31": [ { "cvssData": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N", "version": "3.1" }, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "psirt@cisco.com", "type": "Secondary" }, { "cvssData": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N", "version": "3.1" }, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary" } ] }, "published": "2021-09-23T03:15:15.633", "references": [ { "source": "psirt@cisco.com", "tags": [ "Vendor Advisory" ], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr900acl-UeEyCxkv" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Vendor Advisory" ], "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr900acl-UeEyCxkv" } ], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Modified", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-284" } ], "source": "psirt@cisco.com", "type": "Secondary" }, { "description": [ { "lang": "en", "value": "NVD-CWE-Other" } ], "source": "nvd@nist.gov", "type": "Primary" } ] }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.