USN-3733-1: GnuPG vulnerability

By: | September 11, 2018

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USN-3733-1: GnuPG vulnerability

Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 14.04
  • Canonical Ubuntu 16.04

Description

Daniel J. Bernstein, Joachim Breitner, Daniel Genkin, Leon Groot Bruinderink, Nadia Heninger, Tanja Lange, Christine van Vredendaal, and Yuval Yarom discovered that GnuPG is vulnerable to a cache side-channel attack. A local attacker could use this attack to recover RSA private keys.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

  • Cloud Foundry BOSH trusty-stemcells are vulnerable, including:
    • 3363.x versions prior to 3363.71
    • 3421.x versions prior to 3421.79
    • 3445.x versions prior to 3445.64
    • 3468.x versions prior to 3468.63
    • 3541.x versions prior to 3541.44
    • 3586.x versions prior to 3586.36
    • All other stemcells not listed.
  • Cloud Foundry BOSH xenial-stemcells are vulnerable, including:
    • 97.x versions prior to 97.5
    • All other stemcells not listed.
  • All versions of Cloud Foundry cflinuxfs2 prior to 1.228.0

Mitigation

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

  • The Cloud Foundry project recommends upgrading the following BOSH trusty-stemcells:
    • Upgrade 3363.x versions to 3363.71
    • Upgrade 3421.x versions to 3421.79
    • Upgrade 3445.x versions to 3445.64
    • Upgrade 3468.x versions to 3468.63
    • Upgrade 3541.x versions to 3541.44
    • Upgrade 3586.x versions to 3586.36
    • All other stemcells should be upgraded to the latest version available on bosh.io.
  • The Cloud Foundry project recommends upgrading the following BOSH xenial-stemcells:
    • Upgrade 97.x versions to 97.5
    • 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 1.228.0 or later.

References

Cloud Foundry Foundation Security Team Profile Image

Cloud Foundry Foundation Security Team, AUTHOR

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