CVE-2021-43816
unknown
CVSS v3
—
CVSS v2
—
VIR risk
—
Description
Unprivileged pod using `hostPath` can side-step active LSM when it is SELinux in github.com/containerd/containerd
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-43816.html
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-43816
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 1.5.9~ds1-1 |
| debian | bullseye | fixed | 0 |
| debian | forky | fixed | 1.5.9~ds1-1 |
| debian | sid | fixed | 1.5.9~ds1-1 |
| debian | trixie | fixed | 1.5.9~ds1-1 |
| sles | affected | |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | github.com/containerd/containerd | >=1.5.0,<1.5.9 | 1.5.9 |
References
- https://security-tracker.debian.org/tracker/CVE-2021-43816
- https://www.suse.com/security/cve/CVE-2021-43816.html
- https://github.com/containerd/containerd/security/advisories/GHSA-mvff-h3cj-wj9c
- https://nvd.nist.gov/vuln/detail/CVE-2021-43816
- https://github.com/containerd/containerd/issues/6194
- https://github.com/containerd/containerd/commit/a731039238c62be081eb8c31525b988415745eea
- https://github.com/dweomer/containerd/commit/f7f08f0e34fb97392b0d382e58916d6865100299
- https://github.com/containerd/containerd
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GD5GH7NMK5VJMA2Y5CYB5O5GTPYMWMLX
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MPDIZMI7ZPERSZE2XO265UCK5IWM7CID
Verify integrity in audit chain (admin only). AS-IS.