Exposure of Resource to Wrong Sphere Affecting containerd package, versions <1.4.4~ds1-1
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Test your applications- Snyk ID SNYK-DEBIAN11-CONTAINERD-1082948
- published 6 Mar 2021
- disclosed 10 Mar 2021
Introduced: 6 Mar 2021
CVE-2021-21334 Open this link in a new tabHow to fix?
Upgrade Debian:11 containerd to version 1.4.4~ds1-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream containerd package and not the containerd package as distributed by Debian.
See How to fix? for Debian:11 relevant fixed versions and status.
In containerd (an industry-standard container runtime) before versions 1.3.10 and 1.4.4, containers launched through containerd's CRI implementation (through Kubernetes, crictl, or any other pod/container client that uses the containerd CRI service) that share the same image may receive incorrect environment variables, including values that are defined for other containers. If the affected containers have different security contexts, this may allow sensitive information to be unintentionally shared. If you are not using containerd's CRI implementation (through one of the mechanisms described above), you are not vulnerable to this issue. If you are not launching multiple containers or Kubernetes pods from the same image which have different environment variables, you are not vulnerable to this issue. If you are not launching multiple containers or Kubernetes pods from the same image in rapid succession, you have reduced likelihood of being vulnerable to this issue This vulnerability has been fixed in containerd 1.3.10 and containerd 1.4.4. Users should update to these versions.
References
- https://security-tracker.debian.org/tracker/CVE-2021-21334
- https://github.com/containerd/containerd/security/advisories/GHSA-6g2q-w5j3-fwh4
- 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
- https://github.com/containerd/containerd/commit/05f951a3781f4f2c1911b05e61c160e9c30eaa8e
- 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%40lists.fedoraproject.org/message/KUE2Z2ZUWBHRU36ZGBD2YSJCYB6ELPXE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QIBPKSX5IOWPM3ZPFB3JVLXWDHSZTTWT/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VTXHA5JOWQRCCUZH7ZQBEYN6KZKJEYSD/