CVE-2024-29069

Name	CVE-2024-29069
Description	In snapd versions prior to 2.62, snapd failed to properly check the destination of symbolic links when extracting a snap. The snap format is a squashfs file-system image and so can contain symbolic links and other file types. Various file entries within the snap squashfs image (such as icons and desktop files etc) are directly read by snapd when it is extracted. An attacker who could convince a user to install a malicious snap which contained symbolic links at these paths could then cause snapd to write out the contents of the symbolic link destination into a world-readable directory. This in-turn could allow an unprivileged user to gain access to privileged information.
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
snapd (PTS)	bullseye (security), bullseye	2.49-1+deb11u2	vulnerable
	bookworm	2.57.6-1	vulnerable
	trixie	2.65.3-1	fixed
	sid	2.66.1-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
snapd	source	(unstable)	2.62-1

[bookworm] - snapd <no-dsa> (Minor issue)
[bullseye] - snapd <no-dsa> (Minor issue)
https://github.com/snapcore/snapd/pull/13682