CVE-2019-11503

NameCVE-2019-11503
Descriptionsnap-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."
SourceCVE (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 severitymedium (attack range: remote)
Debian Bugs928052

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
snapd (PTS)stretch2.21-2vulnerable
buster, sid2.37.4-1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
snapdsource(unstable)(unfixed)low928052

Notes

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

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