Severity

high

Vendor

VMware Tanzu

Versions Affected

• Canonical Ubuntu 16.04
• Canonical Ubuntu 18.04
• Canonical Ubuntu 22.04

Description

Tavis Ormandy discovered that some AMD processors did not properly handle speculative execution of certain vector register instructions. A local attacker could use this to expose sensitive information. Update Instructions: Run `sudo pro fix USN-6244-1` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: amd64-microcode - 3.20191021.1+really3.20180524.1~ubuntu0.16.04.2+esm1 Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

CVEs contained in this USN include: CVE-2023-20593

Affected VMware Products and Versions

Severity is high unless otherwise noted.

• Isolation Segment
  • 2.8.x versions with Xenial Stemcells prior to 621.615
  • 2.9.x versions with Xenial Stemcells prior to 621.615
  • 2.10.x versions with Xenial Stemcells prior to 621.615
  • 2.11.x versions with Xenial Stemcells prior to 621.615
  • 2.12.x versions with Xenial Stemcells prior to 621.615
  • 2.13.x versions with Xenial Stemcells prior to 621.615
  • 3.0.x versions with Jammy Stemcells prior to 1.181
  • 4.0.x versions with Jammy Stemcells prior to 1.181
• Operations Manager
  • 2.10.x versions prior to 2.10.60
  • 3.0.x versions prior to 3.0.14+LTS-T
• VMware Tanzu Application Service for VMs
  • 2.8.x versions with Xenial Stemcells prior to 621.615
  • 2.9.x versions with Xenial Stemcells prior to 621.615
  • 2.10.x versions with Xenial Stemcells prior to 621.615
  • 2.11.x versions with Xenial Stemcells prior to 621.615
  • 2.12.x versions with Xenial Stemcells prior to 621.615
  • 2.13.x versions with Xenial Stemcells prior to 621.615
  • 3.0.x versions with Jammy Stemcells prior to 1.181
  • 4.0.x versions with Jammy Stemcells prior to 1.181

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:

• Isolation Segment
  • 2.8.x: Upgrade Xenial Stemcells to 621.615 or greater
  • 2.9.x: Upgrade Xenial Stemcells to 621.615 or greater
  • 2.10.x: Upgrade Xenial Stemcells to 621.615 or greater
  • 2.11.x: Upgrade Xenial Stemcells to 621.615 or greater
  • 2.12.x: Upgrade Xenial Stemcells to 621.615 or greater
  • 2.13.x: Upgrade Xenial Stemcells to 621.615 or greater
  • 3.0.x: Upgrade Jammy Stemcells to 1.181 or greater
  • 4.0.x: Upgrade Jammy Stemcells to 1.181 or greater
• Operations Manager
  • 2.10.60
  • 3.0.14+LTS-T
• VMware Tanzu Application Service for VMs
  • 2.8.x: Upgrade Xenial Stemcells to 621.615 or greater
  • 2.9.x: Upgrade Xenial Stemcells to 621.615 or greater
  • 2.10.x: Upgrade Xenial Stemcells to 621.615 or greater
  • 2.11.x: Upgrade Xenial Stemcells to 621.615 or greater
  • 2.12.x: Upgrade Xenial Stemcells to 621.615 or greater
  • 2.13.x: Upgrade Xenial Stemcells to 621.615 or greater
  • 3.0.x: Upgrade Jammy Stemcells to 1.181 or greater
  • 4.0.x: Upgrade Jammy Stemcells to 1.181 or greater

References

• https://ubuntu.com/security/CVE-2023-20593
• https://ubuntu.com/security/notices/USN-6244-1

History

2023-08-02: Initial vulnerability report published.