USN-6505-1: nghttp2 vulnerability

Severity

Medium

Vendor

Canonical Ubuntu

Description

It was discovered that nghttp2 incorrectly handled request cancellation. A remote attacker could possibly use this issue to cause nghttp2 to consume resources, leading to a denial of service. Update Instructions: Run `sudo pro fix USN-6505-1` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: libnghttp2-14 – 1.40.0-1ubuntu0.2 libnghttp2-doc – 1.40.0-1ubuntu0.2 libnghttp2-dev – 1.40.0-1ubuntu0.2 nghttp2-proxy – 1.40.0-1ubuntu0.2 nghttp2 – 1.40.0-1ubuntu0.2 nghttp2-client – 1.40.0-1ubuntu0.2 nghttp2-server – 1.40.0-1ubuntu0.2 No subscription required

CVEs contained in this USN include: CVE-2023-44487.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• cflinuxfs4
  • All versions prior to 1.52.0
• Jammy Stemcells
  • 1.x versions prior to 1.309
  • All other stemcells not listed.
• CF Deployment
  • All versions with Jammy Stemcells prior to 1.309

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 1.52.0 or greater
• Jammy Stemcells
  • Upgrade 1.x versions to 1.309 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 1.309 or greater

History

2024-03-18: Initial vulnerability report published.