Vulnerability Description
Moby 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mobyproject | Moby | < 20.10.18 |
| Fedoraproject | Fedora | 36 |
Related Weaknesses (CWE)
References
- https://github.com/moby/moby/commit/de7af816e76a7fd3fbf06bffa6832959289fba32PatchThird Party Advisory
- https://github.com/moby/moby/releases/tag/v20.10.18Third Party Advisory
- https://github.com/moby/moby/security/advisories/GHSA-rc4r-wh2q-q6c4Third Party Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://www.benthamsgaze.org/2022/08/22/vulnerability-in-linux-containers-invest
- https://github.com/moby/moby/commit/de7af816e76a7fd3fbf06bffa6832959289fba32PatchThird Party Advisory
- https://github.com/moby/moby/releases/tag/v20.10.18Third Party Advisory
- https://github.com/moby/moby/security/advisories/GHSA-rc4r-wh2q-q6c4Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
FAQ
What is CVE-2022-36109?
CVE-2022-36109 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Moby 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 dir...
How severe is CVE-2022-36109?
CVE-2022-36109 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-36109?
Check the references section above for vendor advisories and patch information. Affected products include: Mobyproject Moby, Fedoraproject Fedora.