CVE-2019-11503

Name	CVE-2019-11503
Description	snap-confine as included in snapd before 2.39 did not guard against symlink races when performing the chdir() to the current working directory of the calling user, aka a "cwd restore permission bypass."
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severity	medium (attack range: remote)
Debian Bugs	928052

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
snapd (PTS)	stretch	2.21-2	vulnerable
	bullseye, buster	2.37.4-1	vulnerable
	sid	2.40-1	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
snapd	source	(unstable)	(unfixed)	low		928052

[buster] - snapd <no-dsa> (Minor issue)
[stretch] - snapd <no-dsa> (Minor issue)
https://github.com/snapcore/snapd/pull/6642