Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 14.04
• Canonical Ubuntu 16.04
• Canonical Ubuntu 18.04

Description

It was discovered that libxml2 incorrectly handled certain XML files. An attacker could possibly use this issue to cause a denial of service. (CVE-2019-19956, CVE-2020-7595)

CVEs contained in this USN include: CVE-2019-19956, CVE-2020-7595.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• cflinuxfs3
  • All versions prior to 0.163.0
• Xenial Stemcells
  • 621.x versions prior to 621.57
  • 456.x versions prior to 456.98
  • 315.x versions prior to 315.169
  • 250.x versions prior to 250.183
  • 170.x versions prior to 170.203
  • 97.x versions prior to 97.232
  • All other stemcells not listed.
• CF Deployment

  •   * All versions prior to v12.33.0
    

Mitigation

Users of affected products are strongly encouraged to follow the mitigations below. The Cloud Foundry project recommends upgrading the following releases:

• cflinuxfs3

• *       * Upgrade All versions to 0.163.0 or greater
  

• Xenial Stemcells
  • Upgrade 621.x versions to 621.57 or greater
  • Upgrade 456.x versions to 456.98 or greater
  • Upgrade 315.x versions to 315.169 or greater
  • Upgrade 250.x versions to 250.183 or greater
  • Upgrade 170.x versions to 170.203 or greater
  • Upgrade 97.x versions to 97.232 or greater
  • All other stemcells should be upgraded to the latest version available on bosh.io.
• CF Deployment
  • Upgrade All versions to v12.33.0 or greater

References

• USN Notice
• CVE-2019-19956
• CVE-2020-7595

History

2020-02-10: Initial vulnerability report published.