CVE-2023-31439

Name	CVE-2023-31439
Description	An issue was discovered in systemd 253. An attacker can modify the contents of past events in a sealed log file and then adjust the file such that checking the integrity shows no error, despite modifications. NOTE: the vendor reportedly sent "a reply denying that any of the finding was a security vulnerability."
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
systemd (PTS)	buster	241-7~deb10u8	vulnerable
	buster (security)	241-7~deb10u10	vulnerable
	bullseye	247.3-7+deb11u4	vulnerable
	bookworm	252.22-1~deb12u1	vulnerable
	trixie	255.4-1	vulnerable
	sid	255.5-1	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
systemd	source	(unstable)	(unfixed)	unimportant

Disputed by upstream
https://github.com/kastel-security/Journald/blob/main/journald-publication.pdf