Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

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

Description

It was discovered that Python incorrectly stripped certain characters from requests. A remote attacker could use this issue to perform CRLF injection. (CVE-2019-18348)

It was discovered that Python incorrectly handled certain HTTP requests. An attacker could possibly use this issue to cause a denial of service. (CVE-2020-8492)

CVEs contained in this USN include: CVE-2019-18348, CVE-2020-8492.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• cflinuxfs3
  • All versions prior to 0.176.0
• Xenial Stemcells
  • 170.x versions prior to 170.217
  • 250.x versions prior to 250.196
  • 315.x versions prior to 315.181
  • 456.x versions prior to 456.110
  • 621.x versions prior to 621.71
  • All other stemcells not listed.
• CF Deployment
  • All versions prior to v13.0.0

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 0.176.0 or greater
• Xenial Stemcells
  • Upgrade 170.x versions to 170.217 or greater
  • Upgrade 250.x versions to 250.196 or greater
  • Upgrade 315.x versions to 315.181 or greater
  • Upgrade 456.x versions to 456.110 or greater
  • Upgrade 621.x versions to 621.71 or greater
  • All other stemcells should be upgraded to the latest version available on bosh.io.
• CF Deployment
  • Upgrade All versions to v13.0.0 or greater

References

• USN Notice
• CVE-2019-18348
• CVE-2020-8492

History

2020-04-21: Initial vulnerability report published.