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Security Advisory

USN-6112-2: Perl vulnerability




Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 22.04


USN-6112-1 fixed vulnerabilities in Perl. This update provides the corresponding updates for Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 22.10, and Ubuntu 23.04. Original advisory details: It was discovered that Perl was not properly verifying TLS certificates when using CPAN together with HTTP::Tiny to download modules over HTTPS. If a remote attacker were able to intercept communications, this flaw could potentially be used to install altered modules. Update Instructions: Run `sudo pro fix USN-6112-2` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: perl-modules-5.30 – 5.30.0-9ubuntu0.4 libperl-dev – 5.30.0-9ubuntu0.4 perl-doc – 5.30.0-9ubuntu0.4 perl – 5.30.0-9ubuntu0.4 perl-base – 5.30.0-9ubuntu0.4 libperl5.30 – 5.30.0-9ubuntu0.4 perl-debug – 5.30.0-9ubuntu0.4 No subscription required

CVEs contained in this USN include: CVE-2023-31484.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

  • cflinuxfs4
    • All versions prior to 1.15.0
  • Jammy Stemcells
    • 1.x versions prior to 1.147
    • All other stemcells not listed.
  • CF Deployment
    • All versions with Jammy Stemcells prior to 1.147


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

  • cflinuxfs4
    • Upgrade all versions to 1.15.0 or greater
  • Jammy Stemcells
    • Upgrade 1.x versions to 1.147 or greater
    • All other stemcells should be upgraded to the latest version available on
  • CF Deployment
    • For all versions, upgrade Jammy Stemcells to 1.147 or greater


2023-06-29: Initial vulnerability report published.

Cloud Foundry Foundation Security Team Profile Image

Cloud Foundry Foundation Security Team, AUTHOR