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Security Advisory

USN-4351-1: Linux firmware vulnerability

USN-4351-1: Linux firmware vulnerability




Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 16.04


Eli Biham and Lior Neumann discovered that certain Bluetooth devices incorrectly validated key exchange parameters. An attacker could possibly use this issue to obtain sensitive information.

CVEs contained in this USN include: CVE-2018-5383.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

  • Xenial Stemcells
    • 170.x versions prior to 170.220
    • 250.x versions prior to 250.199
    • 315.x versions prior to 315.184
    • 456.x versions prior to 456.113
    • 621.x versions prior to 621.75
    • All other stemcells not listed.


Users of affected products are strongly encouraged to follow the mitigations below. The Cloud Foundry project recommends upgrading the following releases:

  • Xenial Stemcells
    • Upgrade 170.x versions to 170.220 or greater
    • Upgrade 250.x versions to 250.199 or greater
    • Upgrade 315.x versions to 315.184 or greater
    • Upgrade 456.x versions to 456.113 or greater
    • Upgrade 621.x versions to 621.75 or greater
    • All other stemcells should be upgraded to the latest version available on


2020-05-06: Initial vulnerability report published.

Cloud Foundry Foundation Security Team Profile Image

Cloud Foundry Foundation Security Team, AUTHOR