containerd CRI plugin: Host memory exhaustion through ExecSync
CVE-2022-31030

5.5MEDIUM

Key Information:

Vendor

Containerd

Status
Containerd
Vendor
CVE Published:
9 June 2022

What is CVE-2022-31030?

containerd is an open source container runtime. A bug was found in the containerd's CRI implementation where programs inside a container can cause the containerd daemon to consume memory without bound during invocation of the ExecSync API. This can cause containerd to consume all available memory on the computer, denying service to other legitimate workloads. Kubernetes and crictl can both be configured to use containerd's CRI implementation; ExecSync may be used when running probes or when executing processes via an "exec" facility. This bug has been fixed in containerd 1.6.6 and 1.5.13. Users should update to these versions to resolve the issue. Users unable to upgrade should ensure that only trusted images and commands are used.

Affected Version(s)

containerd < 1.5.13 < 1.5.13

containerd >= 1.6.0, < 1.6.6 < 1.6.0, 1.6.6

References

https://github.com/containerd/containerd/security/advisor...
https://github.com/containerd/containerd/commit/c1bcabb45...
http://www.openwall.com/lists/oss-security/2022/06/07/1
mailing-list

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2022-31030 : containerd CRI plugin: Host memory exhaustion through ExecSync