Vulnerability Details : CVE-2022-23471
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.
Products affected by CVE-2022-23471
- cpe:2.3:a:linuxfoundation:containerd:*:*:*:*:*:*:*:*
- cpe:2.3:a:linuxfoundation:containerd:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-23471
0.20%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 39 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-23471
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST | |
|
5.7
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H |
2.1
|
3.6
|
GitHub, Inc. |
CWE ids for CVE-2022-23471
-
The product does not properly control the allocation and maintenance of a limited resource.Assigned by: security-advisories@github.com (Secondary)
-
The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.Assigned by: nvd@nist.gov (Primary)
References for CVE-2022-23471
-
https://github.com/containerd/containerd/commit/a05d175400b1145e5e6a735a6710579d181e7fb0
Merge pull request from GHSA-2qjp-425j-52j9 · containerd/containerd@a05d175 · GitHubPatch;Third Party Advisory
-
https://security.gentoo.org/glsa/202401-31
containerd: Multiple Vulnerabilities (GLSA 202401-31) — Gentoo security
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https://github.com/containerd/containerd/security/advisories/GHSA-2qjp-425j-52j9
containerd CRI stream server: Host memory exhaustion through Terminal resize goroutine leak · Advisory · containerd/containerd · GitHubThird Party Advisory
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