USN-4966-1: libx11 vulnerability

Severity

Medium

Vendor

Canonical Ubuntu

Description

It was discovered that libx11 incorrectly validated certain parameter lengths. A remote attacker could possibly use this issue to trick libx11 into emitting extra X protocol requests.

CVEs contained in this USN include: CVE-2021-31535.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• cflinuxfs3
  • All versions prior to 0.239.0
• CF Deployment
  • All versions prior to 16.15.0

Mitigation

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 0.239.0 or greater
• CF Deployment
  • Upgrade all versions to 16.15.0 or greater

History

2021-06-11: Initial vulnerability report published.