USN-5570-1: zlib vulnerability

Severity

Medium

Vendor

Canonical Ubuntu

Description

Evgeny Legerov discovered that zlib incorrectly handled memory when performing certain inflate operations. An attacker could use this issue to cause zlib to crash, resulting in a denial of service, or possibly execute arbitrary code. Update Instructions: Run `sudo ua fix USN-5570-1` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: libx32z1-dev – 1:1.2.8.dfsg-2ubuntu4.3+esm2 lib64z1 – 1:1.2.8.dfsg-2ubuntu4.3+esm2 libx32z1 – 1:1.2.8.dfsg-2ubuntu4.3+esm2 lib64z1-dev – 1:1.2.8.dfsg-2ubuntu4.3+esm2 lib32z1 – 1:1.2.8.dfsg-2ubuntu4.3+esm2 zlib1g – 1:1.2.8.dfsg-2ubuntu4.3+esm2 lib32z1-dev – 1:1.2.8.dfsg-2ubuntu4.3+esm2 zlib1g-dev – 1:1.2.8.dfsg-2ubuntu4.3+esm2 Available with UA Infra or UA Desktop: https://ubuntu.com/advantage

CVEs contained in this USN include: CVE-2022-37434.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• Bionic Stemcells
  • 1.x versions prior to 1.97
  • All other stemcells not listed.
• cflinuxfs3
  • All versions prior to 0.316.0
• CF Deployment
  • All versions

Mitigation

Users of affected products are strongly encouraged to follow the mitigations below.

The Cloud Foundry project recommends upgrading the following releases:

• Bionic Stemcells
  • Upgrade 1.x versions to 1.97 or greater
  • All other stemcells should be upgraded to the latest version available on bosh.io.
• cflinuxfs3
  • Upgrade all versions to 0.316.0 or greater
• CF Deployment
  • There are no fixed versions of this product

History

2022-08-25: Initial vulnerability report published.