Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 22.04

Description

David Gstir discovered that libcap2 incorrectly handled certain return codes. An attacker could possibly use this issue to cause libcap2 to consume memory, leading to a denial of service. (CVE-2023-2602) Richard Weinberger discovered that libcap2 incorrectly handled certain long input strings. An attacker could use this issue to cause libcap2 to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2023-2603) Update Instructions: Run sudo pro fix USN-6166-1 to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: libcap2 – 1:2.32-1ubuntu0.1 libcap2-bin – 1:2.32-1ubuntu0.1 libpam-cap – 1:2.32-1ubuntu0.1 libcap-dev – 1:2.32-1ubuntu0.1 No subscription required

CVEs contained in this USN include: CVE-2023-2602, CVE-2023-2603.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• cflinuxfs4
  • All versions prior to 1.19.0
• Jammy Stemcells
  • 1.x versions prior to 1.147
  • All other stemcells not listed.
• CF Deployment
  • All versions with Jammy Stemcells prior to 1.147

Mitigation

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

The Cloud Foundry project recommends upgrading the following releases:

• cflinuxfs4
  • Upgrade all versions to 1.19.0 or greater
• Jammy Stemcells
  • Upgrade 1.x versions to 1.147 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 1.147 or greater

References

• USN Notice
• CVE-2023-2602
• CVE-2023-2603

History

2023-06-29: Initial vulnerability report published.