CVE-2024-29069

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.

Notes