CVE-2021-30465: mount destinations can be swapped via symlink-exchange to cause mounts outside the rootfs

CVE-2021-30465 · Severity: low · CVSS 3.1 · Published 2024-08-21

Mount destinations can be swapped via symlink-exchange to cause mounts outside the rootfs in github.com/opencontainers/runc

Technologies: github.com/opencontainers/runc (Go). Vendors: Go.

Quick answers

Is CVE-2021-30465 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2021-30465 being exploited in the wild.
How severe is CVE-2021-30465?
Low severity, with a CVSS score of 3.1, published 21 August 2024.
Which products and versions are affected?
github.com/opencontainers/runc (Go) SEMVER:introduced=0,fixed=1.0.0-rc95.
Is there a fix for CVE-2021-30465?
Yes. github.com/opencontainers/runc (Go): upgrade to 1.0.0-rc95 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2021-30465?
Check whether you run github.com/opencontainers/runc (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/opencontainers/runc (Go): upgrade to 1.0.0-rc95 or later
    go get github.com/opencontainers/runc@v1.0.0-rc95

Affected products

  • github.com/opencontainers/runc (Go) SEMVER:introduced=0,fixed=1.0.0-rc95

Identifiers

  • CVE-2021-30465
  • GHSA-c3xm-pvg7-gh7r
  • GO-2022-0914

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