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.
The product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource.
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.
| Link | Tags |
|---|---|
| https://github.com/containerd/containerd/security/advisories/GHSA-c72p-9xmj-rx3w | third party advisory |
| https://github.com/containerd/containerd/releases/tag/v1.4.8 | third party advisory release notes |
| https://github.com/containerd/containerd/releases/tag/v1.5.4 | third party advisory release notes |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DDMNDPJJTP3J5GOEDB66F6MGXUTRG3Y3/ | vendor advisory |
| https://security.gentoo.org/glsa/202401-31 | vendor advisory |