Severity

medium

Vendor

VMware Tanzu

Versions Affected

• Canonical Ubuntu 16.04
• Canonical Ubuntu 18.04

Description

USN-6168-1 fixed a vulnerability in libx11. This update provides the corresponding update for Ubuntu 14.04 ESM, Ubuntu 16.04 ESM, and Ubuntu 18.04 ESM. Original advisory details: Gregory James Duck discovered that libx11 incorrectly handled certain Request, Event, or Error IDs. If a user were tricked into connecting to a malicious X Server, a remote attacker could possibly use this issue to cause libx11 to crash, resulting in a denial of service. Update Instructions: Run `sudo pro fix USN-6168-2` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: libx11-6 - 2:1.6.3-1ubuntu2.2+esm2 libx11-data - 2:1.6.3-1ubuntu2.2+esm2 libx11-xcb-dev - 2:1.6.3-1ubuntu2.2+esm2 libx11-xcb1 - 2:1.6.3-1ubuntu2.2+esm2 libx11-doc - 2:1.6.3-1ubuntu2.2+esm2 libx11-dev - 2:1.6.3-1ubuntu2.2+esm2 Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

CVEs contained in this USN include: CVE-2023-3138

Affected VMware Products and Versions

Severity is medium unless otherwise noted.

• Platform Automation Toolkit
  • 4.0.x versions prior to 4.0.13
  • 4.1.x versions prior to 4.1.13
  • 4.2.x versions prior to 4.2.8
  • 4.3.x versions prior to 4.3.5
• Isolation Segment
  • 2.11.x versions prior to 2.11.36
  • 2.13.x versions prior to 2.13.21
  • 3.0.x versions prior to 3.0.14
  • 4.0.x versions prior to 4.0.5
• Operations Manager
  • 2.7.x versions prior to 2.7.25
  • 2.8.x versions prior to 2.8.16
  • 2.9.x versions prior to 2.9.12
  • 2.10.x versions prior to 2.10.3
• VMware Tanzu Application Service for VMs
  • 2.11.x versions prior to 2.11.42
  • 2.13.x versions prior to 2.13.24
  • 3.0.x versions prior to 3.0.14
  • 4.0.x versions prior to 4.0.5

Mitigation

Users of affected products are strongly encouraged to follow the mitigation below. On the Tanzu Network product page for each release, check the Depends On section and/or Release Notes for this information. Releases that have fixed this issue include:

• Platform Automation Toolkit
  • 4.0.13
  • 4.1.13
  • 4.2.8
  • 4.3.5
• Isolation Segment
  • 2.11.36
  • 2.13.21
  • 3.0.14
  • 4.0.5
• Operations Manager
  • 2.7.25
  • 2.8.16
  • 2.9.12
  • 2.10.3
• VMware Tanzu Application Service for VMs
  • 2.11.42
  • 2.13.24
  • 3.0.14
  • 4.0.5

References

• https://ubuntu.com/security/CVE-2023-3138
• https://ubuntu.com/security/notices/USN-6168-2

History

2023-08-02: Initial vulnerability report published.