USN-4581-1: Python vulnerability | Cloud Foundry

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 handled certain character sequences. A remote attacker could possibly use this issue to perform CRLF injection.

CVEs contained in this USN include: CVE-2020-26116.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• cflinuxfs3
  • All versions prior to 0.209.0
• Xenial Stemcells
  • 315.x versions prior to 315.198
  • 456.x versions prior to 456.125
  • 621.x versions prior to 621.89
  • All other stemcells not listed.
• CF Deployment
  • All versions prior to 14.0.0

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 0.209.0 or greater
• Xenial Stemcells
  • Upgrade 315.x versions to 315.198 or greater
  • Upgrade 456.x versions to 456.125 or greater
  • Upgrade 621.x versions to 621.89 or greater
  • All other stemcells should be upgraded to the latest version available on bosh.io.
• CF Deployment
  • Upgrade All versions to 14.0.0 or greater

References

• USN Notice
• CVE-2020-26116

History

2020-11-20: Initial vulnerability report published.