variot - var-202107-0488

var-202107-0488

Vulnerability from variot

An Out-of-bounds Read vulnerability in the processing of specially crafted LLDP frames by the Layer 2 Control Protocol Daemon (l2cpd) of Juniper Networks Junos OS and Junos OS Evolved may allow an attacker to cause a Denial of Service (DoS), or may lead to remote code execution (RCE). Continued receipt and processing of these frames, sent from the local broadcast domain, will repeatedly crash the l2cpd process and sustain the Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS: 12.3 versions prior to 12.3R12-S18; 15.1 versions prior to 15.1R7-S9; 17.3 versions prior to 17.3R3-S12; 17.4 versions prior to 17.4R2-S13, 17.4R3-S5; 18.1 versions prior to 18.1R3-S13; 18.2 versions prior to 18.2R3-S8; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R2-S8, 18.4R3-S8; 19.1 versions prior to 19.1R3-S5; 19.2 versions prior to 19.2R3-S3; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S3; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R3-S1; 20.3 versions prior to 20.3R2-S1, 20.3R3; 20.4 versions prior to 20.4R2. Juniper Networks Junos OS Evolved versions prior to 20.4R2-EVO. Pillow is a Python-based image processing library. There is currently no information about this vulnerability, please feel free to follow CNNVD or manufacturer announcements. The operating system provides a secure programming interface and Junos SDK. An attacker could exploit this vulnerability to cause a denial of service

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    "sources": [
      {
        "db": "CNNVD",
        "id": "CNNVD-202107-1052"
      }
    ],
    "trust": 0.6
  }
}

cve-2021-0277

Vulnerability from cvelistv5

Published

2021-07-15 20:00

Modified

2024-09-16 18:29

Severity ?

8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

References

▼	URL	Tags
	https://kb.juniper.net/JSA11181	x_refsource_CONFIRM

Impacted products

Vendor

Product

Version

▼

Juniper Networks

Junos OS

Version: 12.3   < 12.3R12-S18
Version: 15.1   < 15.1R7-S9
Version: 17.3   < 17.3R3-S12
Version: 17.4   < 17.4R2-S13, 17.4R3-S5
Version: 18.1   < 18.1R3-S13
Version: 18.2   < 18.2R3-S8
Version: 18.3   < 18.3R3-S5
Version: 18.4   < 18.4R2-S8, 18.4R3-S8
Version: 19.1   < 19.1R3-S5
Version: 19.2   < 19.2R3-S3
Version: 19.3   < 19.3R2-S6, 19.3R3-S2
Version: 19.4   < 19.4R1-S4, 19.4R2-S4, 19.4R3-S3
Version: 20.1   < 20.1R2-S2, 20.1R3
Version: 20.2   < 20.2R3-S1
Version: 20.3   < 20.3R2-S1, 20.3R3
Version: 20.4   < 20.4R2

Juniper Networks

Junos OS Evolved

Version: unspecified < 20.4R2-EVO

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
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      "exploits": [
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          "DATE_PUBLIC": "2021-07-14T16:00:00.000Z",
          "ID": "CVE-2021-0277",
          "STATE": "PUBLIC",
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        "affects": {
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                            "version_name": "19.1",
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                          {
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                            "version_name": "19.2",
                            "version_value": "19.2R3-S3"
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          }
        ],
        "credit": [
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            "value": "The Juniper SIRT would like to acknowledge and thank Qian Chen from the Codesafe Team of Legendsec at the Qi\u0027anxin Group."
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        "data_version": "4.0",
        "description": {
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            {
              "lang": "eng",
              "value": "An Out-of-bounds Read vulnerability in the processing of specially crafted LLDP frames by the Layer 2 Control Protocol Daemon (l2cpd) of Juniper Networks Junos OS and Junos OS Evolved may allow an attacker to cause a Denial of Service (DoS), or may lead to remote code execution (RCE). Continued receipt and processing of these frames, sent from the local broadcast domain, will repeatedly crash the l2cpd process and sustain the Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS: 12.3 versions prior to 12.3R12-S18; 15.1 versions prior to 15.1R7-S9; 17.3 versions prior to 17.3R3-S12; 17.4 versions prior to 17.4R2-S13, 17.4R3-S5; 18.1 versions prior to 18.1R3-S13; 18.2 versions prior to 18.2R3-S8; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R2-S8, 18.4R3-S8; 19.1 versions prior to 19.1R3-S5; 19.2 versions prior to 19.2R3-S3; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S3; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R3-S1; 20.3 versions prior to 20.3R2-S1, 20.3R3; 20.4 versions prior to 20.4R2. Juniper Networks Junos OS Evolved versions prior to 20.4R2-EVO."
            }
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        "exploit": [
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            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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                  "value": "CWE-125 Out-of-bounds Read"
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            "lang": "en",
            "value": "The following software releases have been updated to resolve this specific issue:\n\nJunos OS 12.3R12-S18, 15.1R7-S9, 17.3R3-S12, 17.4R2-S13, 17.4R3-S5, 18.1R3-S13, 18.2R3-S8, 18.3R3-S5, 18.4R2-S8, 18.4R3-S8, 19.1R3-S5, 19.3R2-S6, 19.3R3-S2, 19.4R1-S4, 19.4R2-S4, 19.4R3-S3, 20.1R2-S2, 20.1R3, 20.2R3-S1, 20.3R2-S1, 20.3R3, 20.4R2, 20.4R3, 21.1R1, 21.1R2, 21.2R1, and all subsequent releases.\n\nJunos OS Evolved 20.4R2-EVO, 21.1R1-EVO, and all subsequent releases."
          }
        ],
        "source": {
          "advisory": "JSA11181",
          "defect": [
            "1569312"
          ],
          "discovery": "EXTERNAL"
        },
        "work_around": [
          {
            "lang": "en",
            "value": "1. Configure the device to not load the L2CPD daemon using the following CLI config stanza.\n\n  set system processes l2cpd-service disable\n\nAdditional protocols L2CPD daemon supports include RSTP, MSTP, VSTP, ERP, xSTP and ERP protocols. After issuing set system processes l2cpd-service disable, RSTP, MSTP, VSTP, ERP,  xSTP and ERP protocols will cease to operate.  Please note, this is not an exhaustive list, disabling L2CPD may affect other protocols and services that rely upon L2CPD daemon to be present.  For example, L2ALD, MRVP, EVPN traffic, etc. may also cease to operate. To avoid downtime, customers considering applying this workaround should carefully test all workaround changes to their environment in a non-production environment first that mirrors or as closely as possible matches the production environment before applying to the production environment.\n\n2. Configure target interfaces on the device to disable LLDP packet processing:\n \n  set protocols lldp interface \u003cinterface name\u003e disable\n\n3. On Switching platforms such as EX/QFX Series devices implement packet filters to discard LLDP packets with an EtherType of 0x88cc.\n\nFor example:\n\n  set firewall family ethernet-switching filter LLDP_EXAMPLE term 1 from ether-type 0x88cc\n  set firewall family ethernet-switching filter LLDP_EXAMPLE term 1 then discard\n \nWorkaround #3 does not work on MX Series devices.  MX Series devices should disable LLDP processing, filter off-system, or upgrade to a fixed release.\n \n4. Lastly, as a method to reduce the risk of exploitation for this vulnerability, customers may implement off-system IDP and/or Firewall filtering methods such as disallowing LLDP EtherType to propagate completely on local segments, or by filtering broadcast addressed LLDP packets or unicast addressed LLDP packets not originated from trusted sources targeted to trusted destinations.\n\nAdditionally, it is good security practice to limit the exploitable attack surface of critical infrastructure networking equipment. Use access lists or firewall filters to limit access to the device via all means to only trusted, administrative networks, hosts and users."
          }
        ]
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
    "assignerShortName": "juniper",
    "cveId": "CVE-2021-0277",
    "datePublished": "2021-07-15T20:00:47.440624Z",
    "dateReserved": "2020-10-27T00:00:00",
    "dateUpdated": "2024-09-16T18:29:22.544Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

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