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Security Advisory

USN-3806-1: systemd vulnerability

USN-3806-1: systemd vulnerability




Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 16.04
  • Canonical Ubuntu 18.04


Felix Wilhelm discovered that the systemd-networkd DHCPv6 client incorrectly handled certain DHCPv6 messages. In configurations where systemd-networkd is being used, an attacker on the same network could use this issue to cause systemd-networkd to crash, resulting in a denial of service, or possibly execute arbitrary code.

CVEs contained in this USN include: CVE-2018-15688

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

  • Cloud Foundry BOSH xenial-stemcells are vulnerable, including:
    • 170.x versions prior to 170.6
    • 97.x versions prior to 97.33
    • All other stemcells not listed.
  • All versions of Cloud Foundry cflinuxfs3 prior to 0.35.0


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 170.x versions to 170.6
    • Upgrade 97.x versions to 97.33
    • All other stemcells should be upgraded to the latest version available on
  • The Cloud Foundry project recommends that Cloud Foundry deployments run with cflinuxfs3 version 0.35.0 or later.


Cloud Foundry Foundation Security Team Profile Image

Cloud Foundry Foundation Security Team, AUTHOR