CVE-2021-43816: GO-2022-0278 - Unprivileged pod using `hostPath` can side-step active LSM when it is SELinux in github.com/containerd/containerd

CVE-2021-43816 · Severity: low · CVSS 3.1 · Published 2024-08-21

Unprivileged pod using `hostPath` can side-step active LSM when it is SELinux in github.com/containerd/containerd

Technologies: github.com/containerd/containerd (Go). Vendors: Go.

Quick answers

Is CVE-2021-43816 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2021-43816 being exploited in the wild.
How severe is CVE-2021-43816?
Low severity, with a CVSS score of 3.1, published 21 August 2024.
Which products and versions are affected?
github.com/containerd/containerd (Go) SEMVER:introduced=1.5.0,fixed=1.5.9.
Is there a fix for CVE-2021-43816?
Yes. github.com/containerd/containerd (Go): upgrade to 1.5.9 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2021-43816?
Check whether you run github.com/containerd/containerd (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • github.com/containerd/containerd (Go): upgrade to 1.5.9 or later
    go get github.com/containerd/containerd@v1.5.9

Affected products

  • github.com/containerd/containerd (Go) SEMVER:introduced=1.5.0,fixed=1.5.9

Identifiers

  • CVE-2021-43816
  • GHSA-mvff-h3cj-wj9c
  • GO-2022-0278

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