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Security Advisory

USN-4662-1: OpenSSL vulnerability




Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 16.04
  • Canonical Ubuntu 18.04


David Benjamin discovered that OpenSSL incorrectly handled comparing certificates containing a EDIPartyName name type. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service.

CVEs contained in this USN include: CVE-2020-1971.

Affected Cloud Foundry Products and Versions

Severity is high unless otherwise noted.

  • cflinuxfs3
    • All versions prior to 0.212.0
  • Xenial Stemcells
    • 315.x versions prior to 315.203
    • 456.x versions prior to 456.130
    • 621.x versions prior to 621.94
    • All other stemcells not listed.
  • CF Deployment
    • All versions prior to 15.4.0


Users of affected products are strongly encouraged to follow the mitigations below. The Cloud Foundry project recommends upgrading the following releases:

  • cflinuxfs3
    • Upgrade All versions to 0.212.0 or greater
  • Xenial Stemcells
    • Upgrade 315.x versions to 315.203 or greater
    • Upgrade 456.x versions to 456.130 or greater
    • Upgrade 621.x versions to 621.94 or greater
    • All other stemcells should be upgraded to the latest version available on
  • CF Deployment
    • Upgrade All versions to 15.4.0 or greater


2021-01-13: Initial vulnerability report published.

Cloud Foundry Foundation Security Team Profile Image

Cloud Foundry Foundation Security Team, AUTHOR