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CVE-2021-43612

Date: April 14, 2023

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.

Language: C

Severity Score

7.5

Related Resources (15)

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-43612

Url: https://security.alpinelinux.org/vuln/CVE-2021-43612

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/

Url: https://lldpd.github.io/security.html

Url: https://access.redhat.com/security/cve/CVE-2021-43612

Url: https://github.com/lldpd/lldpd/compare/1.0.12...1.0.13

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2021-43612

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/

Url: https://security-tracker.debian.org/tracker/CVE-2021-43612

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/

Url: https://github.com/lldpd/lldpd/commit/73d42680fce8598324364dbb31b9bc3b8320adf7

Url: https://www.mend.io/vulnerability-database/CVE-2021-43612

Severity Score

7.5

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:	7.5
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	HIGH

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