Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 14.04 LTS

Description

It was discovered that Nettle incorrectly mitigated certain timing side-channel attacks. A remote attacker could possibly use this flaw to recover private keys.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

• Cloud Foundry BOSH stemcells are vulnerable, including:
  • 3151.x versions prior to 3151.11
  • 3233.x versions prior to 3233.14
  • 3263.x versions prior to 3263.20
  • 3312.x versions prior to 3312.20
  • 3363.x versions prior to 3363.9
• All versions of Cloud Foundry cflinuxfs2 prior to v1.100.0

Mitigation

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

• The Cloud Foundry team recommends upgrading to the following BOSH stemcells:
  • Upgrade 3151.x versions to 3151.11 or later
  • Upgrade 3233.x versions to 3233.14 or later
  • Upgrade 3263.x versions to 3263.20 or later
  • Upgrade 3312.x versions to 3312.20 or later
  • Upgrade 3363.x versions to 3363.9 or later
• The Cloud Foundry project recommends that Cloud Foundry deployments run with cflinuxfs2 v1.100.0 or later versions

References

• https://www.ubuntu.com/usn/usn-3193-1/
• http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-6489.html