Bug 869407 (CVE-2022-36109)

Summary:	<app-containers/docker-20.10.22: supplementary groups mishandling
Product:	Gentoo Security	Reporter:	John Helmert III <ajak>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	CONFIRMED ---
Severity:	minor	CC:	gyakovlev, williamh
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://github.com/moby/moby/security/advisories/GHSA-rc4r-wh2q-q6c4
Whiteboard:	B4 [glsa?]
Package list:		Runtime testing required:	---

Description John Helmert III archtester

2022-09-10 01:37:14 UTC

CVE-2022-36109:

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.

Please bump to 20.10.18.