USN-6244-1: AMD Microcode vulnerability
Severity
High
Vendor
Canonical Ubuntu
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 Cloud Foundry Products and Versions
Severity is high unless otherwise noted.
- Jammy Stemcells
- 1.x versions prior to 1.181
- All other stemcells not listed.
- CF Deployment
- All versions with Jammy Stemcells prior to 1.181
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 1.181 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 1.181 or greater
References
History
2023-10-05: Initial vulnerability report published.
