Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

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

Description

Daniel Moghimi discovered that some Intel® Processors did not properly clear microarchitectural state after speculative execution of various instructions. A local unprivileged user could use this to obtain to sensitive information. (CVE-2022-40982) It was discovered that some Intel® Xeon® Processors did not properly restrict error injection for Intel® SGX or Intel® TDX. A local privileged user could use this to further escalate their privileges. (CVE-2022-41804) It was discovered that some 3rd Generation Intel® Xeon® Scalable processors did not properly restrict access in some situations. A local privileged attacker could use this to obtain sensitive information. (CVE-2023-23908) Update Instructions: Run sudo pro fix USN-6286-1 to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: intel-microcode – 3.20230808.0ubuntu0.16.04.1+esm1 Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

CVEs contained in this USN include: CVE-2022-40982, CVE-2022-41804, CVE-2023-23908.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• Jammy Stemcells
  • 1.x versions prior to 1.207
  • All other stemcells not listed.
• CF Deployment
  • All versions with Jammy Stemcells prior to 1.207

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 1.207 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 1.207 or greater

References

• USN Notice
• CVE-2022-40982
• CVE-2022-41804
• CVE-2023-23908

History

2023-10-05: Initial vulnerability report published.