Improper Preservation of Permissions Affecting docker.io package, versions <20.10.10+dfsg1-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.05% (20th percentile)

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  • Snyk IDSNYK-DEBIAN12-DOCKERIO-1727741
  • published5 Oct 2021
  • disclosed4 Oct 2021

Introduced: 4 Oct 2021

CVE-2021-41089  (opens in a new tab)
CWE-281  (opens in a new tab)

How to fix?

Upgrade Debian:12 docker.io to version 20.10.10+dfsg1-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream docker.io package and not the docker.io package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

Moby is an open-source project created by Docker to enable software containerization. A bug was found in Moby (Docker Engine) where attempting to copy files using docker cp into a specially-crafted container can result in Unix file permission changes for existing files in the host’s filesystem, widening access to others. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process. This bug has been fixed in Moby (Docker Engine) 20.10.9. Users should update to this version as soon as possible. Running containers do not need to be restarted.

CVSS Scores

version 3.1