MGASA-2021-0500

Advisory lineage Upstream: 3 Downstream: 0
Published: 31 Oct 2021, 11:12
Last modified:16 Apr 2026, 04:24

Vulnerability Summary

Overall Risk (default)
minimal
0/100
CVSS Score
No data
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

31 Oct 2021, 11:12
Published
Vulnerability first disclosed
16 Apr 2026, 04:24
Last Modified
Vulnerability information updated

Description

Updated docker packages fix security vulnerabilities Updated docker packages fix security vulnerabilities: 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 hosts filesystem, widening access to others. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process (CVE-2021-41089). 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 (CVE-2021-41091). A bug was found in the Docker CLI where running 'docker login my-private-registry.example.com' with a misconfigured configuration file (typically '~/.docker/config.json') listing a 'credsStore' or 'credHelpers' that could not be executed would result in any provided credentials being sent to 'registry-1.docker.io' rather than the intended private registry (CVE-2021-41092).

Affected Systems

  • mageia•docker

    < 20.10.9-3.mga8

References (2)