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CVE-2022-40302

Date: May 2, 2023

An issue was discovered in bgpd in FRRouting (FRR) through 8.4. By crafting a BGP OPEN message with an option of type 0xff (Extended Length from RFC 9072), attackers may cause a denial of service (assertion failure and daemon restart, or out-of-bounds read). This is possible because of inconsistent boundary checks that do not account for reading 3 bytes (instead of 2) in this 0xff case.

Language: C

Severity Score

Related Resources (7)

https://lists.debian.org/debian-lts-announce/2023/09/msg00020.html
https://access.redhat.com/security/cve/CVE-2022-40302
https://www.debian.org/security/2023/dsa-5495
https://nvd.nist.gov/vuln/detail/CVE-2022-40302
https://github.com/FRRouting/frr/releases
https://security-tracker.debian.org/tracker/CVE-2022-40302
https://www.mend.io/vulnerability-database/CVE-2022-40302

Severity Score

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

CVSS v3.1

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

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