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.
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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2022-09-09T17:20:11

Updated: 2024-08-03T09:52:00.643Z

Reserved: 2022-07-15T00:00:00

Link: CVE-2022-36109

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2022-09-09T18:15:10.540

Modified: 2024-11-21T07:12:24.560

Link: CVE-2022-36109

cve-icon Redhat

Severity : Low

Publid Date: 2022-09-15T00:00:00Z

Links: CVE-2022-36109 - Bugzilla