var-202103-0946
Vulnerability from variot
This vulnerability allows remote attackers to execute arbitrary code on affected installations of NETGEAR R7800 firmware version 1.0.2.76. Authentication is not required to exploit this vulnerability. The specific flaw exists within the refresh_status.aspx endpoint. The issue results from a lack of authentication required to start a service on the server. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-12360. Zero Day Initiative To this vulnerability ZDI-CAN-12360 Was numbered.Information is obtained, information is tampered with, and service is disrupted (DoS) It may be put into a state
Show details on source website{ "affected_products": { "_id": null, "data": [ { "_id": null, "model": "rbk53", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "2.7.2.104" }, { "_id": null, "model": "r9000", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "1.0.5.28" }, { "_id": null, "model": "ex6250", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "1.0.0.134" }, { "_id": null, "model": "r7800", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "1.0.2.80" }, { "_id": null, "model": "rbr20", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "2.6.2.104" }, { "_id": null, "model": "r8900", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "1.0.5.28" }, { "_id": null, "model": "rbk20", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "2.6.2.104" }, { "_id": null, "model": "rbk40", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "2.6.2.104" }, { "_id": null, "model": "ex6400", "scope": "lt", 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"netgear", "version": "2.6.2.104" }, { "_id": null, "model": "ex6410", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "1.0.0.134" }, { "_id": null, "model": "rbs50y", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "2.6.2.104" }, { "_id": null, "model": "rbk50", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "2.7.2.104" }, { "_id": null, "model": "xr450", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "2.3.2.114" }, { "_id": null, "model": "br500", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "5.10.0.5" }, { "_id": null, "model": "rbk14", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "2.7.2.104" }, { "_id": null, "model": "ex7300v2", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "1.0.0.134" }, { "_id": null, "model": "xr700", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "1.0.1.38" }, { "_id": null, "model": "rbr40", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "2.6.2.104" }, { "_id": null, "model": "ex6100v2", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "1.0.1.98" }, { "_id": null, "model": "rbk43", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "2.6.2.104" }, { "_id": null, "model": "ex7700", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "1.0.0.216" }, { "_id": null, "model": "rbr10", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "2.6.2.104" }, { "_id": null, "model": "rbk43s", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "2.6.2.104" }, { "_id": null, "model": "ex8000", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "1.0.1.232" }, { "_id": null, "model": "rbk15", "scope": "lt", "trust": 1.0, "vendor": "netgear", "version": "2.7.2.104" }, { "_id": null, "model": "ex6150v2", "scope": null, "trust": 0.8, "vendor": "\u30cd\u30c3\u30c8\u30ae\u30a2", "version": null }, { "_id": null, "model": "ex6400v2", "scope": null, "trust": 0.8, "vendor": "\u30cd\u30c3\u30c8\u30ae\u30a2", "version": null }, { "_id": null, "model": "ex6100v2", "scope": null, "trust": 0.8, "vendor": "\u30cd\u30c3\u30c8\u30ae\u30a2", "version": null }, { "_id": null, "model": "d7800", "scope": null, "trust": 0.8, "vendor": "\u30cd\u30c3\u30c8\u30ae\u30a2", "version": null }, { "_id": null, "model": "br200", "scope": null, "trust": 0.8, "vendor": "\u30cd\u30c3\u30c8\u30ae\u30a2", "version": null }, { "_id": null, "model": "ex6250", "scope": null, "trust": 0.8, "vendor": "\u30cd\u30c3\u30c8\u30ae\u30a2", "version": null }, { "_id": null, "model": "ex6420", "scope": null, "trust": 0.8, "vendor": "\u30cd\u30c3\u30c8\u30ae\u30a2", "version": null }, { "_id": null, "model": "ex6410", "scope": null, "trust": 0.8, "vendor": "\u30cd\u30c3\u30c8\u30ae\u30a2", "version": null }, { "_id": null, "model": "ex6400", "scope": null, "trust": 0.8, "vendor": "\u30cd\u30c3\u30c8\u30ae\u30a2", "version": null }, { "_id": null, "model": "br500", "scope": null, "trust": 0.8, "vendor": "\u30cd\u30c3\u30c8\u30ae\u30a2", "version": null }, { "_id": null, "model": "r7800", "scope": null, "trust": 0.7, "vendor": "netgear", "version": null } ], "sources": [ { "db": "ZDI", "id": "ZDI-21-263" }, { "db": "JVNDB", "id": "JVNDB-2021-004433" }, { "db": "NVD", "id": "CVE-2021-27255" } ] }, "credits": { "_id": null, "data": "STARLabs", "sources": [ { "db": "ZDI", "id": "ZDI-21-263" } ], "trust": 0.7 }, "cve": "CVE-2021-27255", "cvss": { "_id": null, "data": [ { "cvssV2": [ { "accessComplexity": "LOW", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE", "author": "nvd@nist.gov", "availabilityImpact": "COMPLETE", "baseScore": 8.3, "confidentialityImpact": "COMPLETE", "exploitabilityScore": 6.5, "id": "CVE-2021-27255", "impactScore": 10.0, "integrityImpact": "COMPLETE", "severity": "HIGH", "trust": 1.8, "vectorString": "AV:A/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0" } ], "cvssV3": [ { "attackComplexity": "LOW", "attackVector": "ADJACENT", "author": "nvd@nist.gov", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "exploitabilityScore": 2.8, "id": "CVE-2021-27255", "impactScore": 5.9, "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "trust": 1.0, "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, { "attackComplexity": "LOW", "attackVector": "ADJACENT", "author": "zdi-disclosures@trendmicro.com", "availabilityImpact": "LOW", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "exploitabilityScore": 2.8, "id": "CVE-2021-27255", "impactScore": 3.4, "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "trust": 1.0, "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "version": "3.0" }, { "attackComplexity": "Low", "attackVector": "Adjacent Network", "author": "NVD", "availabilityImpact": "High", "baseScore": 8.8, "baseSeverity": "High", "confidentialityImpact": "High", "exploitabilityScore": null, "id": "CVE-2021-27255", "impactScore": null, "integrityImpact": "High", "privilegesRequired": "None", "scope": "Unchanged", "trust": 0.8, "userInteraction": "None", "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.0" }, { "attackComplexity": "LOW", "attackVector": "ADJACENT", "author": "ZDI", "availabilityImpact": "LOW", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "exploitabilityScore": 2.8, "id": "CVE-2021-27255", "impactScore": 3.4, "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "trust": 0.7, "userInteraction": "NONE", "vectorString": "AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "version": "3.0" } ], "severity": [ { "author": "nvd@nist.gov", "id": "CVE-2021-27255", "trust": 1.0, "value": "HIGH" }, { "author": "zdi-disclosures@trendmicro.com", "id": "CVE-2021-27255", "trust": 1.0, "value": "MEDIUM" }, { "author": "NVD", "id": "CVE-2021-27255", "trust": 0.8, "value": "High" }, { "author": "ZDI", "id": "CVE-2021-27255", "trust": 0.7, "value": "MEDIUM" }, { "author": "CNNVD", "id": "CNNVD-202102-1751", "trust": 0.6, "value": "HIGH" } ] } ], "sources": [ { "db": "ZDI", "id": "ZDI-21-263" }, { "db": "JVNDB", "id": "JVNDB-2021-004433" }, { "db": "CNNVD", "id": "CNNVD-202102-1751" }, { "db": "NVD", "id": "CVE-2021-27255" }, { "db": "NVD", "id": "CVE-2021-27255" } ] }, "description": { "_id": null, "data": "This vulnerability allows remote attackers to execute arbitrary code on affected installations of NETGEAR R7800 firmware version 1.0.2.76. Authentication is not required to exploit this vulnerability. The specific flaw exists within the refresh_status.aspx endpoint. The issue results from a lack of authentication required to start a service on the server. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-12360. Zero Day Initiative To this vulnerability ZDI-CAN-12360 Was numbered.Information is obtained, information is tampered with, and service is disrupted (DoS) It may be put into a state", "sources": [ { "db": "NVD", "id": "CVE-2021-27255" }, { "db": "JVNDB", "id": "JVNDB-2021-004433" }, { "db": "ZDI", "id": "ZDI-21-263" } ], "trust": 2.25 }, "external_ids": { "_id": null, "data": [ { "db": "NVD", "id": "CVE-2021-27255", "trust": 3.1 }, { "db": "ZDI", "id": "ZDI-21-263", "trust": 3.1 }, { "db": "JVNDB", "id": "JVNDB-2021-004433", "trust": 0.8 }, { "db": "ZDI_CAN", "id": "ZDI-CAN-12360", "trust": 0.7 }, { "db": "CNNVD", "id": "CNNVD-202102-1751", "trust": 0.6 } ], "sources": [ { "db": "ZDI", "id": "ZDI-21-263" }, { "db": "JVNDB", "id": "JVNDB-2021-004433" }, { "db": "CNNVD", "id": "CNNVD-202102-1751" }, { "db": "NVD", "id": "CVE-2021-27255" } ] }, "id": "VAR-202103-0946", "iot": { "_id": null, "data": true, "sources": [ { "db": "VARIoT devices database", "id": null } ], "trust": 0.26161140789473686 }, "last_update_date": "2024-11-23T22:33:06.689000Z", "patch": { "_id": null, "data": [ { "title": "Security\u00a0Advisory\u00a0for\u00a0Multiple\u00a0Vulnerabilities\u00a0on\u00a0Some\u00a0Routers,\u00a0Satellites,\u00a0and\u00a0Extenders", "trust": 1.5, "url": "https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-Extenders" }, { "title": "NETGEAR Security vulnerabilities", "trust": 0.6, "url": "http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=142982" } ], "sources": [ { "db": "ZDI", "id": "ZDI-21-263" }, { "db": "JVNDB", "id": "JVNDB-2021-004433" }, { "db": "CNNVD", "id": "CNNVD-202102-1751" } ] }, "problemtype_data": { "_id": null, "data": [ { "problemtype": "CWE-306", "trust": 1.0 }, { "problemtype": "Lack of authentication for important features (CWE-306) [ Other ]", "trust": 0.8 } ], "sources": [ { "db": "JVNDB", "id": "JVNDB-2021-004433" }, { "db": "NVD", "id": "CVE-2021-27255" } ] }, "references": { "_id": null, "data": [ { "trust": 3.0, "url": "https://www.zerodayinitiative.com/advisories/zdi-21-263/" }, { "trust": 2.3, "url": "https://kb.netgear.com/000062883/security-advisory-for-multiple-vulnerabilities-on-some-routers-satellites-and-extenders" }, { "trust": 1.4, "url": "https://nvd.nist.gov/vuln/detail/cve-2021-27255" } ], "sources": [ { "db": "ZDI", "id": "ZDI-21-263" }, { "db": "JVNDB", "id": "JVNDB-2021-004433" }, { "db": "CNNVD", "id": "CNNVD-202102-1751" }, { "db": "NVD", "id": "CVE-2021-27255" } ] }, "sources": { "_id": null, "data": [ { "db": "ZDI", "id": "ZDI-21-263", "ident": null }, { "db": "JVNDB", "id": "JVNDB-2021-004433", "ident": null }, { "db": "CNNVD", "id": "CNNVD-202102-1751", "ident": null }, { "db": "NVD", "id": "CVE-2021-27255", "ident": null } ] }, "sources_release_date": { "_id": null, "data": [ { "date": "2021-02-26T00:00:00", "db": "ZDI", "id": "ZDI-21-263", "ident": null }, { "date": "2021-11-22T00:00:00", "db": "JVNDB", "id": "JVNDB-2021-004433", "ident": null }, { "date": "2021-02-26T00:00:00", "db": "CNNVD", "id": "CNNVD-202102-1751", "ident": null }, { "date": "2021-03-05T20:15:12.457000", "db": "NVD", "id": "CVE-2021-27255", "ident": null } ] }, "sources_update_date": { "_id": null, "data": [ { "date": "2021-02-26T00:00:00", "db": "ZDI", "id": "ZDI-21-263", "ident": null }, { "date": "2021-11-22T05:55:00", "db": "JVNDB", "id": "JVNDB-2021-004433", "ident": null }, { "date": "2021-03-19T00:00:00", "db": "CNNVD", "id": "CNNVD-202102-1751", "ident": null }, { "date": "2024-11-21T05:57:41.983000", "db": "NVD", "id": "CVE-2021-27255", "ident": null } ] }, "threat_type": { "_id": null, "data": "remote or local", "sources": [ { "db": "CNNVD", "id": "CNNVD-202102-1751" } ], "trust": 0.6 }, "title": { "_id": null, "data": "NETGEAR\u00a0R7800\u00a0 Vulnerability regarding lack of authentication for important functions in firmware", "sources": [ { "db": "JVNDB", "id": "JVNDB-2021-004433" } ], "trust": 0.8 }, "type": { "_id": null, "data": "access control error", "sources": [ { "db": "CNNVD", "id": "CNNVD-202102-1751" } ], "trust": 0.6 } }
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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.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- 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.