CVE-2023-38710

Name	CVE-2023-38710
Description	An issue was discovered in Libreswan before 4.12. When an IKEv2 Child SA REKEY packet contains an invalid IPsec protocol ID number of 0 or 1, an error notify INVALID_SPI is sent back. The notify payload's protocol ID is copied from the incoming packet, but the code that verifies outgoing packets fails an assertion that the protocol ID must be ESP (2) or AH(3) and causes the pluto daemon to crash and restart. NOTE: the earliest affected version is 3.20.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libreswan (PTS)	buster (security), buster, buster (lts)	3.27-6+deb10u1	vulnerable
	bullseye	4.3-1+deb11u4	vulnerable
	bullseye (security)	4.3-1+deb11u3	vulnerable
	bookworm	4.10-2+deb12u1	vulnerable
	sid, trixie	4.14-1.1	fixed

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

Package	Type	Release	Fixed Version	Urgency
libreswan	source	buster	(unfixed)	end-of-life
libreswan	source	bullseye	(unfixed)	end-of-life
libreswan	source	(unstable)	4.12-1

Notes

[bullseye] - libreswan <end-of-life> (see #1072527)
https://libreswan.org/security/CVE-2023-38710/CVE-2023-38710.txt
https://libreswan.org/security/CVE-2023-38710/CVE-2023-38710.patch