USN-6485-1: Intel Microcode vulnerability | Cloud Foundry

Severity

High

Vendor

Canonical Ubuntu

Versions Affected

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

Description

Benoit Morgan, Paul Grosen, Thais Moreira Hamasaki, Ke Sun, Alyssa Milburn, Hisham Shafi, Nir Shlomovich, Tavis Ormandy, Daniel Moghimi, Josh Eads, Salman Qazi, Alexandra Sandulescu, Andy Nguyen, Eduardo Vela, Doug Kwan, and Kostik Shtoyk discovered that some Intel® Processors did not properly handle certain sequences of processor instructions. A local attacker could possibly use this to cause a core hang (resulting in a denial of service), gain access to sensitive information or possibly escalate their privileges. Update Instructions: Run sudo pro fix USN-6485-1 to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: intel-microcode – 3.20231114.0ubuntu0.16.04.1+esm1 Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

CVEs contained in this USN include: CVE-2023-23583.

Affected Cloud Foundry Products and Versions

Severity is high unless otherwise noted.

• Jammy Stemcells
  • 1.x versions prior to 1.301
  • All other stemcells not listed.
• CF Deployment
  • All versions with Jammy Stemcells prior to 1.301

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 1.301 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 1.301 or greater

References

• USN Notice
• CVE-2023-23583

History

2023-12-04: Initial vulnerability report published.