CVE-2022-40318

Name	CVE-2022-40318
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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3573-1
Debian Bugs	1035829

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
frr (PTS)	bullseye	7.5.1-1.1+deb11u2	fixed
	bullseye (security)	7.5.1-1.1+deb11u4	fixed
	bookworm, bookworm (security)	8.4.4-1.1~deb12u1	fixed
	sid, trixie	10.3-3	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin	Debian Bugs
frr	source	buster	7.5.1-1.1+deb10u1	DLA-3573-1
frr	source	bullseye	7.5.1-1.1+deb11u2
frr	source	(unstable)	8.4.1-1		1035829

Notes

https://github.com/FRRouting/frr/issues/13427
https://github.com/FRRouting/frr/issues/13480
https://github.com/FRRouting/frr/commit/1117baca3c592877a4d8a13ed6a1d9bd83977487 (base_8.4)