Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 18.04

Description

Xiang Li discovered that Unbound incorrectly handled delegation caching. A remote attacker could use this issue to keep rogue domain names resolvable long after they have been revoked. Update Instructions: Run sudo ua fix USN-5569-1 to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: libunbound2 – 1.6.7-1ubuntu2.5 unbound – 1.6.7-1ubuntu2.5 python3-unbound – 1.6.7-1ubuntu2.5 python-unbound – 1.6.7-1ubuntu2.5 unbound-anchor – 1.6.7-1ubuntu2.5 unbound-host – 1.6.7-1ubuntu2.5 libunbound-dev – 1.6.7-1ubuntu2.5 No subscription required

CVEs contained in this USN include: CVE-2022-30698, CVE-2022-30699.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• cflinuxfs3
  • All versions prior to 0.315.0
• CF Deployment
  • All versions prior to 21.9.0

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 0.315.0 or greater
• CF Deployment
  • Upgrade all versions to 21.9.0 or greater

References

• USN Notice
• CVE-2022-30698
• CVE-2022-30699

History

2022-09-29: Initial vulnerability report published.