CVE-2021-41103 (https://github.com/containerd/containerd/commit/5b46e404f6b9f661a205e28d59c982d3634148f8): 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.
Please cleanup
(In reply to John Helmert III from comment #1) > Please cleanup Oops, already done, thanks!
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/data/glsa.git/commit/?id=f9feb611eaa9a3e053e61253ddab0e4d85b21cd9 commit f9feb611eaa9a3e053e61253ddab0e4d85b21cd9 Author: GLSAMaker <glsamaker@gentoo.org> AuthorDate: 2024-01-31 12:30:06 +0000 Commit: Hans de Graaff <graaff@gentoo.org> CommitDate: 2024-01-31 12:31:16 +0000 [ GLSA 202401-31 ] containerd: Multiple Vulnerabilities Bug: https://bugs.gentoo.org/802948 Bug: https://bugs.gentoo.org/816315 Bug: https://bugs.gentoo.org/834689 Bug: https://bugs.gentoo.org/835917 Bug: https://bugs.gentoo.org/850124 Bug: https://bugs.gentoo.org/884803 Signed-off-by: GLSAMaker <glsamaker@gentoo.org> Signed-off-by: Hans de Graaff <graaff@gentoo.org> glsa-202401-31.xml | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+)
