Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 22.04

Description

USN-6719-1 fixed a vulnerability in util-linux. Unfortunately, it was discovered that the fix did not fully address the issue. This update removes the setgid permission bit from the wall and write utilities. Original advisory details: Skyler Ferrante discovered that the util-linux wall command did not filter escape sequences from command line arguments. A local attacker could possibly use this issue to obtain sensitive information. Update Instructions: Run sudo pro fix USN-6719-2 to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: bsdutils – 1:2.34-0.1ubuntu9.6 No subscription required fdisk – 2.34-0.1ubuntu9.6 libblkid-dev – 2.34-0.1ubuntu9.6 libblkid1 – 2.34-0.1ubuntu9.6 libfdisk-dev – 2.34-0.1ubuntu9.6 libfdisk1 – 2.34-0.1ubuntu9.6 libmount-dev – 2.34-0.1ubuntu9.6 libmount1 – 2.34-0.1ubuntu9.6 libsmartcols-dev – 2.34-0.1ubuntu9.6 libsmartcols1 – 2.34-0.1ubuntu9.6 libuuid1 – 2.34-0.1ubuntu9.6 mount – 2.34-0.1ubuntu9.6 rfkill – 2.34-0.1ubuntu9.6 util-linux – 2.34-0.1ubuntu9.6 util-linux-locales – 2.34-0.1ubuntu9.6 uuid-dev – 2.34-0.1ubuntu9.6 uuid-runtime – 2.34-0.1ubuntu9.6 No subscription required

CVEs contained in this USN include: CVE-2024-28085.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• cflinuxfs4
  • All versions prior to 1.89.0
• Jammy Stemcells
  • 1.x versions prior to 1.439
  • All other stemcells not listed.
• CF Deployment
  • All versions with Jammy Stemcells prior to 1.439

Mitigation

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 1.89.0 or greater
• Jammy Stemcells
  • Upgrade 1.x versions to 1.439 or greater
  • All other stemcells should be upgraded to the latest version available on bosh.io.
• CF Deployment
  • For all versions, upgrade Jammy Stemcells to 1.439 or greater

References

• USN Notice
• CVE-2024-28085

History

2024-05-23: Initial vulnerability report published.