CVE-2021-32760 log

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Severity	Medium
Remote	No
Type	Directory traversal
Description	A bug was found in containerd version prior to 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.

Group	Package	Affected	Fixed	Severity	Status	Ticket
AVG-2174	containerd	1.5.2-1	1.5.4-1	Medium	Fixed

Date	Advisory	Group	Package	Severity	Type
27 Jul 2021	ASA-202107-70	AVG-2174	containerd	Medium	directory traversal

References
https://github.com/containerd/containerd/security/advisories/GHSA-c72p-9xmj-rx3w https://github.com/containerd/containerd/commit/37a44de17d5d09e258e3c8c29d32ae99797e7c11

Notes
Workaround ========== 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.

Notes

Workaround
==========

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.