CVE-2021-41091

Moby is an open-source project created by Docker to enable software containerization. A bug was found in Moby (Docker Engine) where the data directory (typically `/var/lib/docker`) contained subdirectories with 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 bug has been fixed in Moby (Docker Engine) 20.10.9. Users should update to this version as soon as possible. Running containers should be stopped and restarted for the permissions to be fixed. For users unable to upgrade limit access to the host to trusted users. Limit access to host volumes to trusted containers.

Link	Resource
https://github.com/moby/moby/commit/f0ab919f518c47240ea0e72d0999576bb8008e64	Patch Third Party Advisory
https://github.com/moby/moby/security/advisories/GHSA-3fwx-pjgw-3558	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZNFADTCHHYWVM6W4NJ6CB4FNFM2VMBIB/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B5Q6G6I4W5COQE25QMC7FJY3I3PAYFBB/	Mailing List Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf

Configuration 1

cpe:2.3:a:mobyproject:moby:*:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

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Published : 2021-10-04 09:15

Updated : 2022-06-14 11:15

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NVD link : CVE-2021-41091

Mitre link : CVE-2021-41091

No products.

CWE-281

Improper Preservation of Permissions