USN-5759-1: LibBPF vulnerabilities

Severity

Medium

Vendor

Canonical Ubuntu

Description

It was discovered that LibBPF incorrectly handled certain memory operations under certain circumstances. An attacker could possibly use this issue to cause LibBPF to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 22.10. (CVE-2021-45940, CVE-2021-45941, CVE-2022-3533) It was discovered that LibBPF incorrectly handled certain memory operations under certain circumstances. An attacker could possibly use this issue to cause LibBPF to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2022-3534, CVE-2022-3606) Update Instructions: Run `sudo pro fix USN-5759-1` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: libbpf-dev – 1:0.5.0-1ubuntu22.04.1 libbpf0 – 1:0.5.0-1ubuntu22.04.1 No subscription required

CVEs contained in this USN include: CVE-2021-45940, CVE-2021-45941, CVE-2022-3533, CVE-2022-3534, CVE-2022-3606.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• Jammy Stemcells
  • 1.x versions prior to 1.80
  • All other stemcells not listed.
• CF Deployment
  • All versions with Jammy Stemcells prior to 1.80

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 1.80 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 1.80 or greater

History

2023-01-26: Initial vulnerability report published.