USN-6183-1: Bind vulnerabilities

Severity

Medium

Vendor

Canonical Ubuntu

Description

Shoham Danino, Anat Bremler-Barr, Yehuda Afek, and Yuval Shavitt discovered that Bind incorrectly handled the cache size limit. A remote attacker could possibly use this issue to consume memory, leading to a denial of service. (CVE-2023-2828) It was discovered that Bind incorrectly handled the recursive-clients quota. 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, Ubuntu 22.10, and Ubuntu 23.04. (CVE-2023-2911) Update Instructions: Run `sudo pro fix USN-6183-1` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: dnsutils – 1:9.16.1-0ubuntu2.15 bind9-libs – 1:9.16.1-0ubuntu2.15 bind9utils – 1:9.16.1-0ubuntu2.15 bind9-doc – 1:9.16.1-0ubuntu2.15 bind9-utils – 1:9.16.1-0ubuntu2.15 bind9 – 1:9.16.1-0ubuntu2.15 bind9-dnsutils – 1:9.16.1-0ubuntu2.15 bind9-host – 1:9.16.1-0ubuntu2.15 No subscription required

CVEs contained in this USN include: CVE-2023-2828, CVE-2023-2911.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• cflinuxfs4
  • All versions prior to 1.21.0
• Jammy Stemcells
  • 1.x versions prior to 1.147
  • All other stemcells not listed.
• CF Deployment
  • All versions with Jammy Stemcells prior to 1.147

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 1.21.0 or greater
• Jammy Stemcells
  • Upgrade 1.x versions to 1.147 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 1.147 or greater

History

2023-08-04: Initial vulnerability report published.