USN-5766-1-Heimdal-vulnerability

Severity

Medium

Vendor

Canonical Ubuntu

Description

It was discovered that Heimdal did not properly manage memory when normalizing Unicode. An attacker could possibly use this issue to cause a denial of service. Update Instructions: Run `sudo pro fix USN-5766-1` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: libhcrypto4-heimdal – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 libwind0-heimdal – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 libroken18-heimdal – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 libgssapi3-heimdal – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 heimdal-kcm – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 libhdb9-heimdal – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 libasn1-8-heimdal – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 libsl0-heimdal – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 libkadm5clnt7-heimdal – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 heimdal-kdc – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 libkdc2-heimdal – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 heimdal-servers – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 libheimntlm0-heimdal – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 heimdal-docs – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 libheimbase1-heimdal – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 libkrb5-26-heimdal – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 libotp0-heimdal – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 heimdal-dev – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 libkafs0-heimdal – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 libhx509-5-heimdal – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 heimdal-multidev – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 libkadm5srv8-heimdal – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 heimdal-clients – 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm2 Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

CVEs contained in this USN include: CVE-2022-41916.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• Bionic Stemcells
  • 1.x versions prior to 1.169
  • All other stemcells not listed.
• cflinuxfs3
  • All versions prior to 0.345.0
• CF Deployment
  • All versions prior to 24.1.0, or later versions with Bionic Stemcells prior to 1.169 or Xenial Stemcells prior to 621.376

Mitigation

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 1.169 or greater
  • All other stemcells should be upgraded to the latest version available on bosh.io.
• cflinuxfs3
  • Upgrade all versions to 0.345.0 or greater
• CF Deployment
  • Upgrade all versions to 24.1.0 or greater, upgrade Bionic Stemcells to 1.169 or greater, and upgrade Xenial Stemcells to 621.376 or greater

History

2023-01-13: Initial vulnerability report published.