Vulnerability-Lookup

CVE-2021-43612 (GCVE-0-2021-43612)

Vulnerability from cvelistv5 – Published: 2023-04-15 00:00 – Updated: 2025-02-13 16:28

Summary

In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it's possible to trigger an out-of-bounds heap read via short SONMP packets.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-06 16:06 UTC

CWE

n/a
CWE-787 - Out-of-bounds Write

Assigner

mitre mitre root

References

6 references

URL	Tags
https://lldpd.github.io/security.html
https://github.com/lldpd/lldpd/commit/73d42680fce…
https://github.com/lldpd/lldpd/compare/1.0.12...1.0.13
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory

Show details on NVD website

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      "status": "interim",
      "title": "SUSE CVE CVE-2021-43612",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-43612.json",
      "version": "7"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2024-08-04T04:03:08.610Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://lldpd.github.io/security.html"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://github.com/lldpd/lldpd/commit/73d42680fce8598324364dbb31b9bc3b8320adf7"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://github.com/lldpd/lldpd/compare/1.0.12...1.0.13"
              },
              {
                "name": "FEDORA-2023-88991d2713",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/"
              },
              {
                "name": "FEDORA-2023-c0c184a019",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/"
              },
              {
                "name": "FEDORA-2023-3e4feeadec",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "NETWORK",
                  "availabilityImpact": "HIGH",
                  "baseScore": 7.5,
                  "baseSeverity": "HIGH",
                  "confidentialityImpact": "NONE",
                  "integrityImpact": "NONE",
                  "privilegesRequired": "NONE",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2021-43612",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-02-06T16:06:54.247834Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-787",
                    "description": "CWE-787 Out-of-bounds Write",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-02-06T16:07:14.437Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "n/a",
              "vendor": "n/a",
              "versions": [
                {
                  "status": "affected",
                  "version": "n/a"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it\u0027s possible to trigger an out-of-bounds heap read via short SONMP packets."
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "description": "n/a",
                  "lang": "en",
                  "type": "text"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2023-04-20T00:00:00.000Z",
            "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
            "shortName": "mitre"
          },
          "references": [
            {
              "url": "https://lldpd.github.io/security.html"
            },
            {
              "url": "https://github.com/lldpd/lldpd/commit/73d42680fce8598324364dbb31b9bc3b8320adf7"
            },
            {
              "url": "https://github.com/lldpd/lldpd/compare/1.0.12...1.0.13"
            },
            {
              "name": "FEDORA-2023-88991d2713",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/"
            },
            {
              "name": "FEDORA-2023-c0c184a019",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/"
            },
            {
              "name": "FEDORA-2023-3e4feeadec",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/"
            }
          ]
        }
      },
      "cveMetadata": {
        "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "assignerShortName": "mitre",
        "cveId": "CVE-2021-43612",
        "datePublished": "2023-04-15T00:00:00.000Z",
        "dateReserved": "2021-11-12T00:00:00.000Z",
        "dateUpdated": "2025-02-06T16:07:48.814Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}

ALSA-2024:9158

Vulnerability from osv_almalinux – Published: 2024-11-12 00:00 – Updated: 2024-11-18 11:48 – Source website

Summary

Moderate: lldpd security update

Details

LLDP is an industry standard protocol designed to supplant proprietary Link-Layer protocols such as EDP or CDP. The goal of LLDP is to provide an inter-vendor compatible mechanism to deliver Link-Layer notifications to adjacent network devices.

Security Fix(es):

lldp/openvswitch: denial of service via externally triggered memory leak (CVE-2020-27827)
lldpd: out-of-bounds read when decoding SONMP packets (CVE-2021-43612)
lldpd: CDP PDU Packet cdp.c out-of-bounds read (CVE-2023-41910)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

References

URL

Type

	https://access.redhat.com/errata/RHSA-2024:9158	ADVISORY
	https://access.redhat.com/security/cve/CVE-2020-27827	REPORT
	https://access.redhat.com/security/cve/CVE-2021-43612	REPORT
	https://access.redhat.com/security/cve/CVE-2023-41910	REPORT
	https://bugzilla.redhat.com/1921438	REPORT
	https://bugzilla.redhat.com/2040388	REPORT
	https://bugzilla.redhat.com/2237411	REPORT
	https://errata.almalinux.org/9/ALSA-2024-9158.html	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "lldpd"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.18-4.el9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "lldpd-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.18-4.el9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "LLDP is an industry standard protocol designed to supplant proprietary Link-Layer protocols such as EDP or CDP. The goal of LLDP is to provide an inter-vendor compatible mechanism to deliver Link-Layer notifications to adjacent network devices.  \n\nSecurity Fix(es):  \n\n  * lldp/openvswitch: denial of service via externally triggered memory leak (CVE-2020-27827)\n  * lldpd: out-of-bounds read when decoding SONMP packets (CVE-2021-43612)\n  * lldpd: CDP PDU Packet cdp.c out-of-bounds read (CVE-2023-41910)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.  \n\nAdditional Changes:  \n\nFor detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.\n",
  "id": "ALSA-2024:9158",
  "modified": "2024-11-18T11:48:33Z",
  "published": "2024-11-12T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2024:9158"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2020-27827"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2021-43612"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2023-41910"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/1921438"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2040388"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2237411"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/9/ALSA-2024-9158.html"
    }
  ],
  "related": [
    "CVE-2020-27827",
    "CVE-2021-43612",
    "CVE-2023-41910"
  ],
  "summary": "Moderate: lldpd security update"
}

FKIE_CVE-2021-43612

Vulnerability from fkie_nvd - Published: 2023-04-15 22:15 - Updated: 2026-06-17 04:11

Severity

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

Summary

In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it's possible to trigger an out-of-bounds heap read via short SONMP packets.

References

URL	Tags
cve@mitre.org	https://github.com/lldpd/lldpd/commit/73d42680fce8598324364dbb31b9bc3b8320adf7	Patch
cve@mitre.org	https://github.com/lldpd/lldpd/compare/1.0.12...1.0.13	Patch, Release Notes
cve@mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/
cve@mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/
cve@mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/
cve@mitre.org	https://lldpd.github.io/security.html	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/lldpd/lldpd/commit/73d42680fce8598324364dbb31b9bc3b8320adf7	Patch
af854a3a-2127-422b-91ae-364da2661108	https://github.com/lldpd/lldpd/compare/1.0.12...1.0.13	Patch, Release Notes
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/
af854a3a-2127-422b-91ae-364da2661108	https://lldpd.github.io/security.html	Patch, Third Party Advisory

Impacted products

Vendor	Product	Version
lldpd_project	lldpd	*
fedoraproject	fedora	36
fedoraproject	fedora	37
fedoraproject	fedora	38

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:lldpd_project:lldpd:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "633CAE1D-E0A9-4CE0-B7F1-65BCD6743718",
              "versionEndExcluding": "1.0.13",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*",
              "matchCriteriaId": "5C675112-476C-4D7C-BCB9-A2FB2D0BC9FD",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*",
              "matchCriteriaId": "E30D0E6F-4AE8-4284-8716-991DFA48CC5D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*",
              "matchCriteriaId": "CC559B26-5DFC-4B7A-A27C-B77DE755DFF9",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it\u0027s possible to trigger an out-of-bounds heap read via short SONMP packets."
    }
  ],
  "id": "CVE-2021-43612",
  "lastModified": "2026-06-17T04:11:11.710",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-43612",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-02-06T16:06:54.247834Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2023-04-15T22:15:07.033",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/lldpd/lldpd/commit/73d42680fce8598324364dbb31b9bc3b8320adf7"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Release Notes"
      ],
      "url": "https://github.com/lldpd/lldpd/compare/1.0.12...1.0.13"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://lldpd.github.io/security.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/lldpd/lldpd/commit/73d42680fce8598324364dbb31b9bc3b8320adf7"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Release Notes"
      ],
      "url": "https://github.com/lldpd/lldpd/compare/1.0.12...1.0.13"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://lldpd.github.io/security.html"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}

GHSA-X6GW-C547-CWM7

Vulnerability from github – Published: 2023-04-16 00:30 – Updated: 2024-04-04 03:29

Details

In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it's possible to trigger an out-of-bounds heap read via short SONMP packets.

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2021-43612"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-04-15T22:15:00Z",
    "severity": "HIGH"
  },
  "details": "In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it\u0027s possible to trigger an out-of-bounds heap read via short SONMP packets.",
  "id": "GHSA-x6gw-c547-cwm7",
  "modified": "2024-04-04T03:29:39Z",
  "published": "2023-04-16T00:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
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    },
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      "url": "https://github.com/lldpd/lldpd/compare/1.0.12...1.0.13"
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    },
    {
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    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D"
    },
    {
      "type": "WEB",
      "url": "https://lldpd.github.io/security.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GSD-2021-43612

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it's possible to trigger an out-of-bounds heap read via short SONMP packets.

Aliases

CVE-2021-43612

Aliases

CVE-2021-43612

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2021-43612",
    "id": "GSD-2021-43612",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-43612.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-43612"
      ],
      "details": "In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it\u0027s possible to trigger an out-of-bounds heap read via short SONMP packets.",
      "id": "GSD-2021-43612",
      "modified": "2023-12-13T01:23:25.895390Z",
      "schema_version": "1.4.0"
    }
  },
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            "name": "FEDORA-2023-c0c184a019",
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          }
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      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
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            "children": [],
            "cpe_match": [
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                "cpe23Uri": "cpe:2.3:a:lldpd_project:lldpd:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "1.0.13",
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          },
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            "children": [],
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                "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*",
                "cpe_name": [],
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              },
              {
                "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
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        ]
      },
      "cve": {
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          "ID": "CVE-2021-43612"
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        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it\u0027s possible to trigger an out-of-bounds heap read via short SONMP packets."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-787"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://lldpd.github.io/security.html",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://lldpd.github.io/security.html"
            },
            {
              "name": "https://github.com/lldpd/lldpd/commit/73d42680fce8598324364dbb31b9bc3b8320adf7",
              "refsource": "CONFIRM",
              "tags": [
                "Patch"
              ],
              "url": "https://github.com/lldpd/lldpd/commit/73d42680fce8598324364dbb31b9bc3b8320adf7"
            },
            {
              "name": "https://github.com/lldpd/lldpd/compare/1.0.12...1.0.13",
              "refsource": "CONFIRM",
              "tags": [
                "Patch",
                "Release Notes"
              ],
              "url": "https://github.com/lldpd/lldpd/compare/1.0.12...1.0.13"
            },
            {
              "name": "FEDORA-2023-88991d2713",
              "refsource": "FEDORA",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
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              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/"
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                "Mailing List",
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              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/"
            },
            {
              "name": "FEDORA-2023-3e4feeadec",
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              "tags": [
                "Mailing List",
                "Third Party Advisory"
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              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2023-04-26T14:31Z",
      "publishedDate": "2023-04-15T22:15Z"
    }
  }
}

OPENSUSE-SU-2024:11635-1

Vulnerability from csaf_opensuse - Published: 2024-06-15 00:00 - Updated: 2024-06-15 00:00

Summary

liblldpctl4-1.0.13-1.1 on GA media

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2021-43612.

CVE-2021-43612

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Recommended: 12 products

Open the full advisory

RHSA-2024:9158

Vulnerability from csaf_redhat - Published: 2024-11-12 09:05 - Updated: 2026-08-06 12:12

Summary

Red Hat Security Advisory: lldpd security update

Severity

Moderate

Scope

3 vulnerabilities in this advisory, including CVE-2021-43612.

CVE-2021-43612

An out-of-bounds read vulnerability is present in lldpd. An attacker on the same network as the vulnerable system may use this vulnerability to leak memory data from the application or crash it by sending shorter SONMP packets than what is expected.

7.3 (High)


                
                  CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Fixed: 21 products

https://access.redhat.com/errata/RHSA-2024:9158

Open the full advisory

RHSA-2024_9158

Vulnerability from csaf_redhat - Published: 2024-11-12 09:05 - Updated: 2024-11-24 16:07

Summary

Red Hat Security Advisory: lldpd security update

Severity

Moderate

Scope

3 vulnerabilities in this advisory, including CVE-2021-43612.

CVE-2021-43612

7.3 (High)


                
                  CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Fixed: 21 products

https://access.redhat.com/errata/RHSA-2024:9158

Open the full advisory

UBUNTU-CVE-2021-43612 (CVE-2021-43612)

Vulnerability from osv_ubuntu – Published: 2023-04-15 22:15 – Updated: 2026-05-20 14:53 – Source website

Details

In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it's possible to trigger an out-of-bounds heap read via short SONMP packets.

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2021-43612	REPORT
	https://www.cve.org/CVERecord?id=CVE-2021-43612	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "lldpd",
            "binary_version": "0.7.19-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "lldpd",
        "purl": "pkg:deb/ubuntu/lldpd@0.7.19-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.7.16-1",
        "0.7.19-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "lldpd",
            "binary_version": "0.9.9-1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "lldpd",
        "purl": "pkg:deb/ubuntu/lldpd@0.9.9-1ubuntu0.1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.9.8-1",
        "0.9.9-1",
        "0.9.9-1ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "lldpd",
            "binary_version": "1.0.4-1build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "lldpd",
        "purl": "pkg:deb/ubuntu/lldpd@1.0.4-1build2?arch=source\u0026distro=focal"
      },
      "ranges": [
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          "events": [
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        "1.0.4-1build1",
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            "binary_version": "1.0.13-1"
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      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "lldpd",
        "purl": "pkg:deb/ubuntu/lldpd@1.0.13-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.11-1",
        "1.0.12-1",
        "1.0.13-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "lldpd",
            "binary_version": "1.0.18-1build3"
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        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
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        "purl": "pkg:deb/ubuntu/lldpd@1.0.18-1build3?arch=source\u0026distro=noble"
      },
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          "events": [
            {
              "introduced": "0"
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        "1.0.18-1",
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    },
    {
      "ecosystem_specific": {
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          {
            "binary_name": "lldpd",
            "binary_version": "1.0.18-1build4"
          }
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      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
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      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
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        "1.0.18-1build4"
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    {
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  "modified": "2026-05-20T14:53:36Z",
  "published": "2023-04-15T22:15:00Z",
  "references": [
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      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-43612"
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      "url": "https://www.cve.org/CVERecord?id=CVE-2021-43612"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-43612"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2021-43612 (GCVE-0-2021-43612)

ALSA-2024:9158

FKIE_CVE-2021-43612

GHSA-X6GW-C547-CWM7

GSD-2021-43612

OPENSUSE-SU-2024:11635-1

RHSA-2024:9158

RHSA-2024_9158

UBUNTU-CVE-2021-43612 (CVE-2021-43612)

Tags

Sightings

Nomenclature

Related by attack behaviour