Improper Preservation of Permissions Affecting podman package, versions <5.2.2-r1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-PODMAN-8098316
  • published26 Sept 2024
  • disclosed29 Mar 2023

Introduced: 29 Mar 2023

CVE-2023-25809  (opens in a new tab)
CWE-281  (opens in a new tab)

How to fix?

Upgrade Chainguard podman to version 5.2.2-r1 or higher.

NVD Description

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

runc is a CLI tool for spawning and running containers according to the OCI specification. In affected versions it was found that rootless runc makes /sys/fs/cgroup writable in following conditons: 1. when runc is executed inside the user namespace, and the config.json does not specify the cgroup namespace to be unshared (e.g.., (docker|podman|nerdctl) run --cgroupns=host, with Rootless Docker/Podman/nerdctl) or 2. when runc is executed outside the user namespace, and /sys is mounted with rbind, ro (e.g., runc spec --rootless; this condition is very rare). A container may gain the write access to user-owned cgroup hierarchy /sys/fs/cgroup/user.slice/... on the host . Other users's cgroup hierarchies are not affected. Users are advised to upgrade to version 1.1.5. Users unable to upgrade may unshare the cgroup namespace ((docker|podman|nerdctl) run --cgroupns=private). This is the default behavior of Docker/Podman/nerdctl on cgroup v2 hosts. or add /sys/fs/cgroup to maskedPaths.

CVSS Scores

version 3.1