Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

• Canonical Ubuntu 14.04 LTS

Description

It was discovered that Bind incorrectly handled building responses to certain specially crafted requests. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service.

Affected Products and Versions

Severity is medium unless otherwise noted.

• Cloud Foundry BOSH stemcells are vulnerable, including:
• All versions prior to 3151.5
• 3233.x versions prior to 3233.6
• 3263.x versions prior to 3263.12
• 3312.x versions prior to 3312.7
• All other versions
• All versions of Cloud Foundry cflinuxfs2 prior to v.1.85.0

Mitigation

Users of affected versions should apply the following mitigation:

• The Cloud Foundry team recommends upgrading to the following BOSH stemcells:
• Upgrade all lower versions of 3151.x to version 3151.5
• Upgrade all lower versions of 3233.x to version 3233.6
• Upgrade all lower versions of 3263.x to version 3263.12
• Upgrade all lower versions of 3312.x to version 3312.7
• The Cloud Foundry project recommends that Cloud Foundry deployments run with cflinuxfs2 v.1.85.0 or later versions

References

• https://www.ubuntu.com/usn/usn-3088-1/
• http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-2776.html