Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 16.04
• Canonical Ubuntu 18.04

Description

USN-4038-1 fixed a vulnerability in bzip2. The update introduced a regression causing bzip2 to incorrect raises CRC errors for some files.

We apologize for the inconvenience.

Original advisory details:

It was discovered that bzip2 incorrectly handled certain files. An attacker could possibly use this issue to execute arbitrary code.

CVEs contained in this USN include: CVE-2016-3189, CVE-2019-12900

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• Cloud Foundry BOSH xenial-stemcells are vulnerable, including:
  • 315.x versions prior to 315.70
  • 250.x versions prior to 250.82
  • 170.x versions prior to 170.109
  • 97.x versions prior to 97.134
  • All other stemcells not listed.
• All versions of Cloud Foundry cflinuxfs3 prior to 0.111.0

Mitigation

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

• The Cloud Foundry project recommends upgrading the following BOSH xenial-stemcells:
  • Upgrade 315.x versions to 315.70
  • Upgrade 250.x versions to 250.82
  • Upgrade 170.x versions to 170.109
  • Upgrade 97.x versions to 97.134
  • All other stemcells should be upgraded to the latest version available on bosh.io.
• The Cloud Foundry project recommends that Cloud Foundry deployments run with cflinuxfs3 version 0.111.0 or later.

References

• USN-4038-3
• CVE-2016-3189
• CVE-2019-12900