Cloud Foundry Logo

USN-4015-1: DBus vulnerability


Share

USN-4015-1: DBus vulnerability

Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 16.04
  • Canonical Ubuntu 18.04

Description

Joe Vennix discovered that DBus incorrectly handled DBUS_COOKIE_SHA1 authentication. A local attacker could possibly use this issue to bypass authentication and connect to DBus servers with elevated privileges.

CVEs contained in this USN include: CVE-2019-12749

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

  • Cloud Foundry BOSH xenial-stemcells are vulnerable, including:
    • 315.x versions prior to 315.41
    • 250.x versions prior to 250.63
    • 170.x versions prior to 170.82
    • 97.x versions prior to 97.113
    • All other stemcells not listed.
  • All versions of Cloud Foundry cflinuxfs3 prior to 0.101.0

Mitigation

Users of affected products are strongly encouraged to follow one of the mitigations below:

  • The Cloud Foundry project recommends upgrading the following BOSH xenial-stemcells:
    • Upgrade 315.x versions to 315.41
    • Upgrade 250.x versions to 250.63
    • Upgrade 170.x versions to 170.82
    • Upgrade 97.x versions to 97.113
    • 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 cflinuxfs3 version 0.101.0 or later.

References

Cloud Foundry Foundation Security Team Profile Image

Cloud Foundry Foundation Security Team, AUTHOR

SEE ALL ARTICLES