Vulnerability CVE-2023-25809: Information
Description
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`.
Severity: MEDIUM (6.3) Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
Fixed packages
Package name | Branch | Fixed in version | Version from repository | Errata ID | Task # | State |
---|---|---|---|---|---|---|
runc | sisyphus | 1.1.5-alt1 | 1.1.12-alt1 | ALT-PU-2023-1576-1 | 318009 | Fixed |
runc | sisyphus_riscv64 | 1.1.5-alt1 | 1.1.12-alt1 | ALT-PU-2023-3089-1 | - | Fixed |
runc | p10 | 1.1.5-alt1 | 1.1.12-alt1 | ALT-PU-2023-1647-1 | 318394 | Fixed |
runc | c10f1 | 1.1.5-alt1 | 1.1.12-alt1 | ALT-PU-2023-1647-1 | 318394 | Fixed |
runc | c9f2 | 1.1.5-alt1 | 1.1.12-alt1 | ALT-PU-2023-1623-1 | 318393 | Fixed |
runc | p11 | 1.1.5-alt1 | 1.1.12-alt1 | ALT-PU-2023-1576-1 | 318009 | Fixed |
References to Advisories, Solutions, and Tools
Hyperlink | Resource |
---|---|
https://github.com/opencontainers/runc/security/advisories/GHSA-m8cg-xc2p-r3fc |
|
https://github.com/opencontainers/runc/commit/0d62b950e60f6980b54fe3bafd9a9c608dc1df17 |
|