CVE-2022-43681

Name	CVE-2022-43681
Description	An out-of-bounds read exists in the BGP daemon of FRRouting FRR through 8.4. When sending a malformed BGP OPEN message that ends with the option length octet (or the option length word, in case of an extended OPEN message), the FRR code reads of out of the bounds of the packet, throwing a SIGABRT signal and exiting. This results in a bgpd daemon restart, causing a Denial-of-Service condition.
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+deb11u3	fixed
	bookworm, bookworm (security)	8.4.4-1.1~deb12u1	fixed
	sid, trixie	10.1.1-0.1	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/6c4ca9812976596bf8b5226600269fc4031f1422 (frr-8.4)