VULNERABILITY

Alma Linux: CVE-2022-40318: Moderate: frr security and bug fix update (ALSA-2023-6434)

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Alma Linux: CVE-2022-40318: Moderate: frr security and bug fix update (ALSA-2023-6434)

Severity
7
CVSS
(AV:N/AC:L/Au:S/C:N/I:N/A:C)
Published
05/03/2023
Created
11/17/2023
Added
11/16/2023
Modified
01/28/2025

Description

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. NOTE: this behavior occurs in bgp_open_option_parse in the bgp_open.c file, a different location (with a different attack vector) relative to CVE-2022-40302.

Solution(s)

  • alma-upgrade-frr
  • alma-upgrade-frr-selinux

References

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