USN-6319-1: AMD Microcode vulnerability

Severity

Medium

Vendor

Canonical Ubuntu

Description

Daniël Trujillo, Johannes Wikner, and Kaveh Razavi discovered that some AMD processors utilising speculative execution and branch prediction may allow unauthorised memory reads via a speculative side-channel attack. A local attacker could use this to expose sensitive information, including kernel memory. Update Instructions: Run `sudo pro fix USN-6319-1` 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+esm2 Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

CVEs contained in this USN include: CVE-2023-20569.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• Jammy Stemcells
  • 1.x versions prior to 1.222
  • All other stemcells not listed.
• CF Deployment
  • All versions with Jammy Stemcells prior to 1.222

Mitigation

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

The Cloud Foundry project recommends upgrading the following releases:

• Jammy Stemcells
  • Upgrade 1.x versions to 1.222 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 1.222 or greater

History

2023-10-05: Initial vulnerability report published.