GHSA-c2h3-6mxw-7mvq

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Source
https://github.com/advisories/GHSA-c2h3-6mxw-7mvq
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/10/GHSA-c2h3-6mxw-7mvq/GHSA-c2h3-6mxw-7mvq.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-c2h3-6mxw-7mvq
Aliases
Related
Published
2021-10-04T20:14:47Z
Modified
2024-09-11T06:12:39.954656Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
Summary
Insufficiently restricted permissions on plugin directories
Details

Impact

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.

Patches

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.

Workarounds

Limit access to the host to trusted users. Update directory permission on container bundles directories.

For more information

If you have any questions or comments about this advisory: * Open an issue in github.com/containerd/containerd * Email us at security@containerd.io

References

Affected packages

Go / github.com/containerd/containerd

Package

Name
github.com/containerd/containerd
View open source insights on deps.dev
Purl
pkg:golang/github.com/containerd/containerd

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.4.11

Go / github.com/containerd/containerd

Package

Name
github.com/containerd/containerd
View open source insights on deps.dev
Purl
pkg:golang/github.com/containerd/containerd

Affected ranges

Type
SEMVER
Events
Introduced
1.5.0
Fixed
1.5.7