USN-6791-1: Unbound vulnerability | Cloud Foundry

Severity

Low

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 22.04

Description

It was discovered that Unbound could take part in a denial of service amplification attack known as DNSBomb. This update introduces certain resource limits to make the impact from Unbound significantly lower. Update Instructions: Run sudo pro fix USN-6791-1 to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: libunbound-dev – 1.9.4-2ubuntu1.6 libunbound8 – 1.9.4-2ubuntu1.6 python-unbound – 1.9.4-2ubuntu1.6 python3-unbound – 1.9.4-2ubuntu1.6 unbound – 1.9.4-2ubuntu1.6 unbound-anchor – 1.9.4-2ubuntu1.6 unbound-host – 1.9.4-2ubuntu1.6 No subscription required

CVEs contained in this USN include: CVE-2024-33655.

Affected Cloud Foundry Products and Versions

Severity is low unless otherwise noted.

• cflinuxfs4
  • All versions prior to 1.99.0
• CF Deployment
  • All versions prior to 41.0.0

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 1.99.0 or greater
• CF Deployment
  • Upgrade all versions to 41.0.0 or greater

References

• USN Notice
• CVE-2024-33655

History

2024-07-25: Initial vulnerability report published.