Cloud Foundry Logo

USN-3353-1: Heimdal vulnerability


Share

USN-3353-1: Heimdal vulnerability

Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 14.04

Description

Jeffrey Altman, Viktor Dukhovni, and Nicolas Williams discovered that Heimdal clients incorrectly trusted unauthenticated portions of Kerberos tickets. A remote attacker could use this to impersonate trusted network services or perform other attacks.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

  • Cloud Foundry BOSH stemcells are vulnerable, including:
    • 3312.x versions prior to 3312.32
    • 3363.x versions prior to 3363.29
    • 3421.x versions prior to 3421.18
    • All other stemcells not listed.
  • All versions of Cloud Foundry cflinuxfs2 prior to 1.138.0

Mitigation

OSS users are strongly encouraged to follow one of the mitigations below:

  • The Cloud Foundry project recommends upgrading the following BOSH stemcells:
    • Upgrade 3312.x versions prior to 3312.32
    • Upgrade 3363.x versions prior to 3363.29
    • Upgrade 3421.x versions prior to 3421.18
    • All other stemcells should be upgraded to the latest version available on bosh.io.
  • The Cloud Foundry project recommends that Cloud Foundry deployments run with cflinuxfs2 version 1.138.0 or later.

References

Cloud Foundry Foundation Security Team Profile Image

Cloud Foundry Foundation Security Team, AUTHOR

SEE ALL ARTICLES