CVE-2021-21334
medium
CVSS v3
—
CVSS v4 NEW
—
VIR risk
5.5
Description
containerd environment variable leak
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Arch Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Fixed | 1.4.4-1 |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 1.4.4~ds1-1 |
| sid | Fixed | 1.4.4~ds1-1 |
| forky | Fixed | 1.4.4~ds1-1 |
| bullseye | Fixed | 1.4.4~ds1-1 |
| bookworm | Fixed | 1.4.4~ds1-1 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | github.com/containerd/containerd | >=1.4.0,<1.4.4 | 1.4.4 |
| Go | github.com/containerd/containerd | <1.3.10 | 1.3.10 |
References
- https://security-tracker.debian.org/tracker/CVE-2021-21334
- https://www.suse.com/security/cve/CVE-2021-21334.html
- https://github.com/containerd/containerd/security/advisories/GHSA-6g2q-w5j3-fwh4
- https://nvd.nist.gov/vuln/detail/CVE-2021-21334
- https://github.com/containerd/cri/pull/1628
- https://github.com/containerd/cri/pull/1629
- https://github.com/containerd/containerd/commit/05f951a3781f4f2c1911b05e61c160e9c30eaa8e
- https://github.com/containerd/containerd/commit/2d9c8aa4b3f4313982c5c999af57212a1c5d144b
- https://github.com/containerd/containerd/commit/cbcb2f57fbe221986f96b552855eb802f63193de
- https://github.com/containerd/containerd/releases/tag/v1.3.10
- https://github.com/containerd/containerd/releases/tag/v1.4.4
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KUE2Z2ZUWBHRU36ZGBD2YSJCYB6ELPXE
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QIBPKSX5IOWPM3ZPFB3JVLXWDHSZTTWT
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VTXHA5JOWQRCCUZH7ZQBEYN6KZKJEYSD
- https://security.gentoo.org/glsa/202105-33
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.