Directory Traversal Affecting docker package, versions <20.10.9_ce-156.1
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Test your applications- Snyk ID SNYK-SLES150-DOCKER-2661805
- published 14 Apr 2022
- disclosed 25 Oct 2021
Introduced: 25 Oct 2021
CVE-2021-41103 Open this link in a new tabHow to fix?
Upgrade SLES:15.0 docker to version 20.10.9_ce-156.1 or higher.
NVD Description
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 an open source container runtime with an emphasis on simplicity, robustness and portability. A bug was found in containerd where container root directories and some plugins had insufficiently restricted permissions, allowing otherwise unprivileged Linux users to traverse directory contents and execute programs. When containers included executable programs with extended permission bits (such as setuid), unprivileged Linux users could discover and execute those programs. When the UID of an unprivileged Linux user on the host collided with the file owner or group inside a container, the unprivileged Linux user on the host could discover, read, and modify those files. This vulnerability has been fixed in containerd 1.4.11 and containerd 1.5.7. Users should update to these version when they are released and may restart containers or update directory permissions to mitigate the vulnerability. Users unable to update should limit access to the host to trusted users. Update directory permission on container bundles directories.
References
- https://www.suse.com/security/cve/CVE-2021-41103.html
- https://bugzilla.suse.com/1191121
- https://bugzilla.suse.com/1191355
- https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
- https://github.com/containerd/containerd/commit/5b46e404f6b9f661a205e28d59c982d3634148f8
- https://github.com/containerd/containerd/security/advisories/GHSA-c2h3-6mxw-7mvq
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B5Q6G6I4W5COQE25QMC7FJY3I3PAYFBB/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZNFADTCHHYWVM6W4NJ6CB4FNFM2VMBIB/
- https://www.debian.org/security/2021/dsa-5002
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B5Q6G6I4W5COQE25QMC7FJY3I3PAYFBB/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNFADTCHHYWVM6W4NJ6CB4FNFM2VMBIB/
- https://security.gentoo.org/glsa/202401-31