CVE-2022-36109

NameCVE-2022-36109
DescriptionMoby is an open-source project created by Docker to enable software containerization. A bug was found in Moby (Docker Engine) where supplementary groups are not set up properly. If an attacker has direct access to a container and manipulates their supplementary group access, they may be able to use supplementary group access to bypass primary group restrictions in some cases, potentially gaining access to sensitive information or gaining the ability to execute code in that container. This bug is fixed in Moby (Docker Engine) 20.10.18. Running containers should be stopped and restarted for the permissions to be fixed. For users unable to upgrade, this problem can be worked around by not using the `"USER $USERNAME"` Dockerfile instruction. Instead by calling `ENTRYPOINT ["su", "-", "user"]` the supplementary groups will be set up properly.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
Debian Bugs1019601

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
docker.io (PTS)buster, buster (security)18.09.1+dfsg1-7.1+deb10u3vulnerable
bullseye20.10.5+dfsg1-1+deb11u2vulnerable
bookworm, sid20.10.17+dfsg1-1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
docker.iosource(unstable)(unfixed)1019601

Notes

[bullseye] - docker.io <no-dsa> (Minor issue)
[buster] - docker.io <no-dsa> (Minor issue)
https://github.com/moby/moby/security/advisories/GHSA-rc4r-wh2q-q6c4
https://github.com/moby/moby/commit/de7af816e76a7fd3fbf06bffa6832959289fba32

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