Incorrect Permission Assignment for Critical Resource Affecting docker package, versions <20.10.9_ce-156.1

Note: Versions mentioned in the description apply only to the upstream docker package and not the docker package as distributed by SLES. See How to fix? for SLES:15.0 relevant fixed versions and status.

containerd is a container runtime. A bug was found in containerd versions prior to 1.4.8 and 1.5.4 where pulling and extracting a specially-crafted container image can result in Unix file permission changes for existing files in the host’s filesystem. Changes to file permissions can deny access to the expected owner of the file, widen access to others, or set extended bits like setuid, setgid, and sticky. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process. This bug has been fixed in containerd 1.5.4 and 1.4.8. As a workaround, ensure that users only pull images from trusted sources. Linux security modules (LSMs) like SELinux and AppArmor can limit the files potentially affected by this bug through policies and profiles that prevent containerd from interacting with specific files.

• https://www.suse.com/security/cve/CVE-2021-32760.html
• https://bugzilla.suse.com/1188282
• https://github.com/containerd/containerd/releases/tag/v1.4.8
• https://github.com/containerd/containerd/releases/tag/v1.5.4
• https://github.com/containerd/containerd/security/advisories/GHSA-c72p-9xmj-rx3w
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DDMNDPJJTP3J5GOEDB66F6MGXUTRG3Y3/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DDMNDPJJTP3J5GOEDB66F6MGXUTRG3Y3/
• https://security.gentoo.org/glsa/202401-31