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Security Advisory

USN-5767-3: Python vulnerability

USN-5767-3: Python vulnerability




Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 18.04


USN-5767-1 fixed vulnerabilities in Python. This update fixes the problem for Ubuntu 18.04 LTS. Original advisory details: Nicky Mouha discovered that Python incorrectly handled certain SHA-3 internals. An attacker could possibly use this issue to cause a crash or execute arbitrary code. (CVE-2022-37454) Update Instructions: Run `sudo pro fix USN-5767-3` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: libpython3.6-stdlib – 3.6.9-1~18.04ubuntu1.10 python3.6-venv – 3.6.9-1~18.04ubuntu1.10 python3.6-doc – 3.6.9-1~18.04ubuntu1.10 libpython3.6-testsuite – 3.6.9-1~18.04ubuntu1.10 python3.6-dev – 3.6.9-1~18.04ubuntu1.10 python3.6 – 3.6.9-1~18.04ubuntu1.10 python3.6-minimal – 3.6.9-1~18.04ubuntu1.10 idle-python3.6 – 3.6.9-1~18.04ubuntu1.10 libpython3.6 – 3.6.9-1~18.04ubuntu1.10 libpython3.6-dev – 3.6.9-1~18.04ubuntu1.10 python3.6-examples – 3.6.9-1~18.04ubuntu1.10 libpython3.6-minimal – 3.6.9-1~18.04ubuntu1.10 No subscription required

CVEs contained in this USN include: CVE-2022-37454.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

  • Bionic Stemcells
    • 1.x versions prior to 1.181
    • All other stemcells not listed.
  • cflinuxfs3
    • All versions prior to 0.355.0
  • CF Deployment
    • All versions prior to 27.0.0, or later versions with Bionic Stemcells prior to 1.181


Users of affected products are strongly encouraged to follow the mitigations below.

The Cloud Foundry project recommends upgrading the following releases:

  • Bionic Stemcells
    • Upgrade 1.x versions to 1.181 or greater
    • All other stemcells should be upgraded to the latest version available on
  • cflinuxfs3
    • Upgrade all versions to 0.355.0 or greater
  • CF Deployment
    • Upgrade all versions to 27.0.0 or greater and upgrade Bionic Stemcells to 1.181 or greater


2023-03-23: Initial vulnerability report published.

Cloud Foundry Foundation Security Team Profile Image

Cloud Foundry Foundation Security Team, AUTHOR