GHSA-c72p-9xmj-rx3w

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Source
https://github.com/advisories/GHSA-c72p-9xmj-rx3w
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/07/GHSA-c72p-9xmj-rx3w/GHSA-c72p-9xmj-rx3w.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-c72p-9xmj-rx3w
Aliases
Related
Published
2021-07-26T21:17:45Z
Modified
2024-09-11T06:13:35.871166Z
Severity
  • 5.0 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L CVSS Calculator
Summary
Archive package allows chmod of file outside of unpack target directory
Details

Impact

A bug was found in containerd 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.

Patches

This bug has been fixed in containerd 1.5.4 and 1.4.8. Users should update to these versions as soon as they are released. Running containers do not need to be restarted.

Workarounds

Ensure you 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 unexpected files.

For more information

If you have any questions or comments about this advisory:

  • Open an issue
  • Email us at security@containerd.io if you think you’ve found a security bug.
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
1.4.8

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
1.5.4