Amazon Linux 2023: CVE-2023-27561: Important priority package update for runc

Amazon Linux 2023: CVE-2023-27561: Important priority package update for runc

Severity

6

CVSS

(AV:L/AC:H/Au:S/C:C/I:C/A:C)

Published

02/20/2023

Created

02/14/2025

Added

02/14/2025

Modified

02/14/2025

Description

runc through 1.1.4 has Incorrect Access Control leading to Escalation of Privileges, related to libcontainer/rootfs_linux.go. To exploit this, an attacker must be able to spawn two containers with custom volume-mount configurations, and be able to run custom images. NOTE: this issue exists because of a CVE-2019-19921 regression. A flaw was found in runc. An attacker who controls the container image for two containers that share a volume can race volume mounts during container initialization by adding a symlink to the rootfs that points to a directory on the volume.

Solution(s)

• amazon-linux-2023-upgrade-runc
• amazon-linux-2023-upgrade-runc-debuginfo
• amazon-linux-2023-upgrade-runc-debugsource

References

• https://attackerkb.com/topics/cve-2023-27561
• CVE - 2023-27561
• https://alas.aws.amazon.com/AL2023/ALAS-2023-208.html