4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
6.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
6.2 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
47.0%
Containers launched through containerdβs 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 containerdβs 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 as soon as they are released.
There are no known workarounds.
If you have any questions or comments about this advisory:
CPE | Name | Operator | Version |
---|---|---|---|
github.com/containerd/containerd | lt | 1.3.10 | |
github.com/containerd/containerd | lt | 1.4.4 |
github.com/advisories/GHSA-6g2q-w5j3-fwh4
github.com/containerd/containerd/commit/05f951a3781f4f2c1911b05e61c160e9c30eaa8e
github.com/containerd/containerd/commit/2d9c8aa4b3f4313982c5c999af57212a1c5d144b
github.com/containerd/containerd/commit/cbcb2f57fbe221986f96b552855eb802f63193de
github.com/containerd/containerd/releases/tag/v1.3.10
github.com/containerd/containerd/releases/tag/v1.4.4
github.com/containerd/containerd/security/advisories/GHSA-6g2q-w5j3-fwh4
github.com/containerd/cri/pull/1628
github.com/containerd/cri/pull/1629
lists.fedoraproject.org/archives/list/[email protected]/message/KUE2Z2ZUWBHRU36ZGBD2YSJCYB6ELPXE/
lists.fedoraproject.org/archives/list/[email protected]/message/QIBPKSX5IOWPM3ZPFB3JVLXWDHSZTTWT/
lists.fedoraproject.org/archives/list/[email protected]/message/VTXHA5JOWQRCCUZH7ZQBEYN6KZKJEYSD/
nvd.nist.gov/vuln/detail/CVE-2021-21334
security.gentoo.org/glsa/202105-33
4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
6.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
6.2 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
47.0%