CVE-2023-25809: rootless: `/sys/fs/cgroup` is writable when cgroupns isn't unshared in runc
First published: Wed Mar 29 2023(Updated: )
Last updated 24 July 2024
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/runc | <1.1.5 | 1.1.5 |
| Linuxfoundation Runc | <1.1.5 | |
| debian/runc | <=1.0.0~rc93+ds1-5+deb11u3 | 1.0.0~rc93+ds1-5+deb11u5 1.1.5+ds1-1+deb12u1 1.1.15+ds1-1 |
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Reference Links
- https://github.com/opencontainers/runc/commit/0d62b950e60f6980b54fe3bafd9a9c608dc1df17
- https://github.com/opencontainers/runc/security/advisories/GHSA-m8cg-xc2p-r3fc
- https://launchpad.net/bugs/cve/CVE-2023-25809
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2192150
- https://access.redhat.com/errata/RHSA-2023:1326
- https://access.redhat.com/errata/RHSA-2023:6380
- https://access.redhat.com/errata/RHSA-2023:6938
- https://access.redhat.com/errata/RHSA-2023:6939
- https://bugzilla.redhat.com/show_bug.cgi?id=2182884
- https://github.com/opencontainers/runc/commit/0e6b818a2b0d24fdb6697614e5c5f115bbe8e3a5
- https://security-tracker.debian.org/tracker/CVE-2023-25809
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-25809
- https://nvd.nist.gov/vuln/detail/CVE-2023-25809
- https://ubuntu.com/security/CVE-2023-25809
Frequently Asked Questions
What is CVE-2023-25809?
CVE-2023-25809 is a vulnerability in the runc CLI tool that allows rootless runc to make /sys/fs/cgroup writable under certain conditions.
How does CVE-2023-25809 affect runc?
CVE-2023-25809 affects runc by making /sys/fs/cgroup writable when runc is executed inside the user namespace and the config.json does not specify the cgroup.
What is the severity of CVE-2023-25809?
CVE-2023-25809 has a severity rating of medium.
How can I fix CVE-2023-25809 on Red Hat?
To fix CVE-2023-25809 on Red Hat, update runc to version 1.1.5 or newer.
How can I fix CVE-2023-25809 on Ubuntu 18.04?
To fix CVE-2023-25809 on Ubuntu 18.04, update runc to version 1.1.4-0ubuntu1~18.04.2 or newer.
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