Vulnerability Description
containerd is an open source container runtime. A bug was found in containerd's CRI implementation where a user can exhaust memory on the host. In the CRI stream server, a goroutine is launched to handle terminal resize events if a TTY is requested. If the user's process fails to launch due to, for example, a faulty command, the goroutine will be stuck waiting to send without a receiver, resulting in a memory leak. Kubernetes and crictl can both be configured to use containerd's CRI implementation and the stream server is used for handling container IO. This bug has been fixed in containerd 1.6.12 and 1.5.16. Users should update to these versions to resolve the issue. Users unable to upgrade should ensure that only trusted images and commands are used and that only trusted users have permissions to execute commands in running containers.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linuxfoundation | Containerd | < 1.5.16 |
Related Weaknesses (CWE)
References
- https://github.com/containerd/containerd/commit/a05d175400b1145e5e6a735a6710579dPatchThird Party Advisory
- https://github.com/containerd/containerd/security/advisories/GHSA-2qjp-425j-52j9Third Party Advisory
- https://security.gentoo.org/glsa/202401-31
- https://github.com/containerd/containerd/commit/a05d175400b1145e5e6a735a6710579dPatchThird Party Advisory
- https://github.com/containerd/containerd/security/advisories/GHSA-2qjp-425j-52j9Third Party Advisory
- https://security.gentoo.org/glsa/202401-31
FAQ
What is CVE-2022-23471?
CVE-2022-23471 is a vulnerability with a CVSS score of 5.7 (MEDIUM). containerd is an open source container runtime. A bug was found in containerd's CRI implementation where a user can exhaust memory on the host. In the CRI stream server, a goroutine is launched to han...
How severe is CVE-2022-23471?
CVE-2022-23471 has been rated MEDIUM with a CVSS base score of 5.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-23471?
Check the references section above for vendor advisories and patch information. Affected products include: Linuxfoundation Containerd.