USN-4760-1: libzstd vulnerabilities

Severity

Medium

Vendor

Canonical Ubuntu

Description

It was discovered that libzstd incorrectly handled file permissions. A local attacker could possibly use this issue to access certain files, contrary to expectations.

CVEs contained in this USN include: CVE-2021-24031, CVE-2021-24032.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• cflinuxfs3
  • All versions prior to 0.228.0
• CF Deployment
  • All versions prior to 16.7.0

Mitigation

Users of affected products are strongly encouraged to follow the mitigations below. The Cloud Foundry project recommends upgrading the following releases:

• cflinuxfs3
  • Upgrade all versions to 0.228.0 or greater
• CF Deployment
  • Upgrade all versions to 16.7.0 or greater

History

2021-03-22: Initial vulnerability report published.