CVE-2021-21334

 

Published at: - 10-03-2021 11:15

Last modified: - 03-06-2022 02:46

Total changes: - 5

Description

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

 

Verification logic

 

Reference

• https://github.com/containerd/containerd/security/advisories/GHSA-6g2q-w5j3-fwh4
• 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
• FEDORA-2021-470fa24f5b-Mailing List, Third Party Advisory
• FEDORA-2021-10ce8fcbf1-Mailing List, Third Party Advisory
• FEDORA-2021-f049305892-Mailing List, Third Party Advisory
• GLSA-202105-33-Third Party Advisory

 

Keywords

NVD

 

CVE-2021-21334

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures