USN-5320-1: Expat vulnerabilities and regression

Severity

Medium

Vendor

Canonical Ubuntu

Description

USN-5288-1 fixed several vulnerabilities in Expat. For CVE-2022-25236 it caused a regression and an additional patch was required. This update address this regression and several other vulnerabilities. It was discovered that Expat incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service. (CVE-2022-25313) It was discovered that Expat incorrectly handled certain files. An attacker could possibly use this issue to cause a crash or execute arbitrary code. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 21.10. (CVE-2022-25314) It was discovered that Expat incorrectly handled certain files. An attacker could possibly use this issue to cause a crash or execute arbitrary code. (CVE-2022-25315) Original advisory details: It was discovered that Expat incorrectly handled certain files. An attacker could possibly use this issue to cause a crash or execute arbitrary code. (CVE-2022-25236)

CVEs contained in this USN include: CVE-2022-25313, CVE-2022-25314, CVE-2022-25315.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• Bionic Stemcells
  • 1.x versions prior to 1.71
  • All other stemcells not listed.
• cflinuxfs3
  • All versions prior to 0.276.0
• CF Deployment
  • All versions prior to 19.0.0, or later versions with Xenial Stemcells prior to 621.224

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 1.71 or greater
  • All other stemcells should be upgraded to the latest version available on bosh.io.
• cflinuxfs3
  • Upgrade all versions to 0.276.0 or greater
• CF Deployment
  • Upgrade all versions to 19.0.0 or greater and upgrade Xenial Stemcells to 621.224 or greater

History

2022-04-21: Initial vulnerability report published.