CVE-2023-25809

Source

https://nvd.nist.gov/vuln/detail/CVE-2023-25809

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-25809.json

Aliases

• GHSA-m8cg-xc2p-r3fc

Related

• ALSA-2023:6380
• ALSA-2023:6938
• ALSA-2023:6939
• USN-6088-1
• USN-6088-2

Published

2023-03-29T19:15:22Z

Modified

2023-11-29T09:54:27.875349Z

Details

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.

References

• https://github.com/opencontainers/runc/security/advisories/GHSA-m8cg-xc2p-r3fc
• https://github.com/opencontainers/runc/commit/0d62b950e60f6980b54fe3bafd9a9c608dc1df17