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
Configurations
History
21 Nov 2024, 07:50
Type | Values Removed | Values Added |
---|---|---|
References | () https://github.com/opencontainers/runc/commit/0d62b950e60f6980b54fe3bafd9a9c608dc1df17 - Patch | |
References | () https://github.com/opencontainers/runc/security/advisories/GHSA-m8cg-xc2p-r3fc - Exploit, Vendor Advisory | |
CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.0 |
07 Nov 2023, 04:09
Type | Values Removed | Values Added |
---|---|---|
Summary | 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`. |
06 Apr 2023, 17:41
Type | Values Removed | Values Added |
---|---|---|
References | (MISC) https://github.com/opencontainers/runc/commit/0d62b950e60f6980b54fe3bafd9a9c608dc1df17 - Patch | |
References | (MISC) https://github.com/opencontainers/runc/security/advisories/GHSA-m8cg-xc2p-r3fc - Exploit, Vendor Advisory | |
First Time |
Linuxfoundation
Linuxfoundation runc |
|
CPE | cpe:2.3:a:linuxfoundation:runc:*:*:*:*:*:*:*:* | |
CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.3 |
29 Mar 2023, 19:15
Type | Values Removed | Values Added |
---|---|---|
New CVE |
Information
Published : 2023-03-29 19:15
Updated : 2024-11-21 07:50
NVD link : CVE-2023-25809
Mitre link : CVE-2023-25809
CVE.ORG link : CVE-2023-25809
JSON object : View
Products Affected
linuxfoundation
- runc
CWE
CWE-281
Improper Preservation of Permissions