USN-5827-1: Bind vulnerabilities | Cloud Foundry

Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 22.04

Description

Rob Schulhof discovered that Bind incorrectly handled a large number of UPDATE messages. A remote attacker could possibly use this issue to cause Bind to consume resources, resulting in a denial of service. (CVE-2022-3094) Borja Marcos discovered that Bind incorrectly handled certain RRSIG queries. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 22.10. (CVE-2022-3736) Maksym Odinintsev discovered that Bind incorrectly handled certain answers from stale cache. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 22.10. (CVE-2022-3924) Update Instructions: Run sudo pro fix USN-5827-1 to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: dnsutils – 1:9.16.1-0ubuntu2.12 bind9-libs – 1:9.16.1-0ubuntu2.12 bind9utils – 1:9.16.1-0ubuntu2.12 bind9-doc – 1:9.16.1-0ubuntu2.12 bind9-utils – 1:9.16.1-0ubuntu2.12 bind9 – 1:9.16.1-0ubuntu2.12 bind9-dnsutils – 1:9.16.1-0ubuntu2.12 bind9-host – 1:9.16.1-0ubuntu2.12 No subscription required

CVEs contained in this USN include: CVE-2022-3094, CVE-2022-3736, CVE-2022-3924.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• cflinuxfs4

• * All versions prior to 0.62.0
  

• Jammy Stemcells

• * 1.x versions prior to 1.83
  

  • All other stemcells not listed.
• CF Deployment

• * All versions with Jammy Stemcells prior to 1.83
  

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 0.62.0 or greater
  

• Jammy Stemcells

• * Upgrade 1.x versions to 1.83 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 1.83 or greater
  

References

• USN Notice
• CVE-2022-3094
• CVE-2022-3736
• CVE-2022-3924

History

2023-02-24: Initial vulnerability report published.