Vulnerability · Published Mar 29, 2023 · Assigned by GitHub_M
CVE-2023-25809rootless: `/sys/fs/cgroup` is writable when cgroupns isn't unshared in runc
Medium 5.0
In plain English
A medium-severity security flaw in runc from opencontainers. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.0Medium
Exploit odds (30 days)0.3%top 75.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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`.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | aardvark-dns | 2:1.0.1-38.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | aardvark-dns | 2:1.7.0-1.module_el8.9.0+3657+d86e192f | ALSA-2023:6939 |
| AlmaLinux:8 | buildah | 1:1.31.3-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | buildah | 1:1.24.6-7.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | buildah-tests | 1:1.31.3-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | buildah-tests | 1:1.24.6-7.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | cockpit-podman | 46-1.module_el8.7.0+3344+5bcd850f | ALSA-2023:6938 |
| AlmaLinux:8 | cockpit-podman | 75-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | conmon | 2:2.1.4-2.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | conmon | 3:2.1.8-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | container-selinux | 2:2.221.0-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | container-selinux | 2:2.205.0-3.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | containernetworking-plugins | 1:1.1.1-5.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | containernetworking-plugins | 1:1.3.0-4.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | containers-common | 2:1-54.module_el8.9.0+3673+0c64b403 | ALSA-2023:6939 |
| AlmaLinux:8 | containers-common | 2:1-38.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | crit | 3.18-4.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | crit | 3.15-3.module_el8.6.0+2877+8e437bf5 | ALSA-2023:6938 |
| AlmaLinux:8 | crit | 3.15-3.module_el8.6.0+3137+d33c3efb | ALSA-2023:6938 |
| AlmaLinux:8 | criu | 3.15-3.module_el8.6.0+3137+d33c3efb | ALSA-2023:6938 |
| AlmaLinux:8 | criu | 3.15-3.module_el8.6.0+2877+8e437bf5 | ALSA-2023:6938 |
| AlmaLinux:8 | criu | 3.18-4.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | criu-devel | 3.18-4.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | criu-devel | 3.15-3.module_el8.6.0+2877+8e437bf5 | ALSA-2023:6938 |
| AlmaLinux:8 | criu-devel | 3.15-3.module_el8.6.0+3137+d33c3efb | ALSA-2023:6938 |
| AlmaLinux:8 | criu-libs | 3.15-3.module_el8.6.0+3137+d33c3efb | ALSA-2023:6938 |
| AlmaLinux:8 | criu-libs | 3.18-4.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | criu-libs | 3.15-3.module_el8.6.0+2877+8e437bf5 | ALSA-2023:6938 |
| AlmaLinux:8 | crun | 1.8.3-1.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | crun | 1.8.7-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | fuse-overlayfs | 1.12-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | fuse-overlayfs | 1.9-2.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | libslirp | 4.4.0-1.module_el8.6.0+2877+8e437bf5 | ALSA-2023:6938 |
| AlmaLinux:8 | libslirp | 4.4.0-1.module_el8.6.0+3137+d33c3efb | ALSA-2023:6938 |
| AlmaLinux:8 | libslirp | 4.4.0-1.module_el8.8.0+3615+3543c705 | ALSA-2023:6939 |
| AlmaLinux:8 | libslirp-devel | 4.4.0-1.module_el8.6.0+2877+8e437bf5 | ALSA-2023:6938 |
| AlmaLinux:8 | libslirp-devel | 4.4.0-1.module_el8.8.0+3615+3543c705 | ALSA-2023:6939 |
| AlmaLinux:8 | libslirp-devel | 4.4.0-1.module_el8.6.0+3137+d33c3efb | ALSA-2023:6938 |
| AlmaLinux:8 | netavark | 2:1.0.1-38.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | netavark | 2:1.7.0-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | oci-seccomp-bpf-hook | 1.2.9-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | oci-seccomp-bpf-hook | 1.2.5-2.module_el8.8.0+3468+16b86c82 | ALSA-2023:6938 |
| AlmaLinux:8 | podman | 2:4.0.2-24.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | podman | 3:4.6.1-4.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | podman-catatonit | 3:4.6.1-4.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | podman-catatonit | 2:4.0.2-24.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | podman-docker | 2:4.0.2-24.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | podman-docker | 3:4.6.1-4.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | podman-gvproxy | 3:4.6.1-4.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | podman-gvproxy | 2:4.0.2-24.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | podman-plugins | 2:4.0.2-24.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | podman-plugins | 3:4.6.1-4.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | podman-remote | 3:4.6.1-4.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | podman-remote | 2:4.0.2-24.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | podman-tests | 3:4.6.1-4.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | podman-tests | 2:4.0.2-24.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | python3-criu | 3.18-4.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | python3-criu | 3.15-3.module_el8.6.0+3137+d33c3efb | ALSA-2023:6938 |
| AlmaLinux:8 | python3-criu | 3.15-3.module_el8.6.0+2877+8e437bf5 | ALSA-2023:6938 |
| AlmaLinux:8 | python3-podman | 4.0.0-2.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | python3-podman | 4.6.0-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | runc | 1:1.1.9-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | runc | 1:1.1.5-2.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:9 | runc | 4:1.1.9-1.el9 | ALSA-2023:6380 |
| AlmaLinux:8 | skopeo | 2:1.13.3-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | skopeo | 2:1.6.2-8.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | skopeo-tests | 2:1.13.3-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | skopeo-tests | 2:1.6.2-8.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | slirp4netns | 1.1.8-3.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | slirp4netns | 1.2.1-1.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | toolbox | 0.0.99.4-5.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | toolbox | 0.0.99.4-5.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | toolbox-tests | 0.0.99.4-5.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| AlmaLinux:8 | toolbox-tests | 0.0.99.4-5.module_el8.9.0+3643+9234dc3b | ALSA-2023:6939 |
| AlmaLinux:8 | udica | 0.2.6-20.module_el8.8.0+3615+3543c705 | ALSA-2023:6939 |
| AlmaLinux:8 | udica | 0.2.6-4.module_el8.9.0+3627+db8ec155 | ALSA-2023:6938 |
| Alpine:v3.20 | runc | 1.1.4-r0 | ALPINE-CVE-2023-25809 |
| Alpine:v3.21 | runc | 1.1.4-r0 | ALPINE-CVE-2023-25809 |
| Alpine:v3.22 | runc | 1.1.4-r0 | ALPINE-CVE-2023-25809 |
| Alpine:v3.23 | runc | 1.1.4-r0 | ALPINE-CVE-2023-25809 |
| Alpine:v3.24 | runc | 1.1.4-r0 | ALPINE-CVE-2023-25809 |
| Debian:12 | runc | 1.1.5+ds1-1 | DEBIAN-CVE-2023-25809 |
| Debian:13 | runc | 1.1.5+ds1-1 | DEBIAN-CVE-2023-25809 |
| Debian:14 | runc | 1.1.5+ds1-1 | DEBIAN-CVE-2023-25809 |
| Go | github.com/opencontainers/runc | 1.1.5 | GO-2023-1682 |
| Go | github.com/opencontainers/runc | 1.1.5 | GHSA-m8cg-xc2p-r3fc |
| Rocky Linux:8 | buildah | 1:1.24.6-7.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux:8 | cockpit-podman | 0:46-1.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux:8 | conmon | 2:2.1.4-2.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux:8 | container-selinux | 2:2.205.0-3.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux:8 | containernetworking-plugins | 1:1.1.1-5.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux:8 | containers-common | 2:1-38.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux:8 | criu | 0:3.15-3.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux:8 | crun | 0:1.8.3-1.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux:8 | fuse-overlayfs | 0:1.9-2.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux:8 | libslirp | 0:4.4.0-1.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux:8 | libslirp | 0:4.4.0-1.module+el8.9.0+1445+07728297 | RLSA-2023:6939 |
| Rocky Linux:8 | oci-seccomp-bpf-hook | 0:1.2.5-2.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux:8 | podman | 2:4.0.2-24.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux:8 | python-podman | 0:4.0.0-2.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux:8 | runc | 1:1.1.5-2.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux:8 | slirp4netns | 0:1.1.8-3.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Rocky Linux:8 | udica | 0:0.2.6-4.module+el8.9.0+1445+07728297 | RLSA-2023:6938 |
| Ubuntu:22.04:LTS | runc | 1.1.4-0ubuntu1~22.04.3 | USN-6088-1 |
| Ubuntu:22.04:LTS | runc | 1.1.4-0ubuntu1~22.04.3 | UBUNTU-CVE-2023-25809 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| opencontainers | runc | < 1.1.5 |
Weakness: CWE-281 · Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L