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

2022-06-0600:00:00

CWE-400

GitHub_M

www.cve.org

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.1 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

14.3%

JSON

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.

CNA Affected

[
  {
    "vendor": "containerd",
    "product": "containerd",
    "versions": [
      {
        "version": "< 1.5.13",
        "status": "affected"
      },
      {
        "version": ">= 1.6.0, < 1.6.6",
        "status": "affected"
      }
    ]
  }
]