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CVE-2022-36440

Published: 3 April 2023

A reachable assertion was found in Frrouting frr-bgpd 8.3.0 in the peek_for_as4_capability function. Attackers can maliciously construct BGP open packets and send them to BGP peers running frr-bgpd, resulting in DoS.

Notes

AuthorNote
mdeslaur
introduced by https://github.com/FRRouting/frr/commit/d08c0c8077fbb3e100ed2e87927edec1a09d224b

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
frr
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Not vulnerable
(7.2.1-1ubuntu0.2)
jammy Not vulnerable
(8.1-1ubuntu1.3)
kinetic Not vulnerable
(8.1-1ubuntu3.1)
lunar Not vulnerable
(8.4.2-1ubuntu1)
trusty Ignored
(end of standard support)
upstream
Released (8.4.1-1)
xenial Ignored
(end of standard support)
Patches:
upstream: https://github.com/FRRouting/frr/commit/3e46b43e3788f0f87bae56a86b54d412b4710286 (base_8.4)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H