Ubuntu 12.04 LTS / 14.04 LTS / 14.10 : ruby1.8, ruby1.9.1, ruby2.0, ruby2.1 vulnerability (USN-2412-1)
Medium Nessus Plugin ID 79382
Synopsis
The remote Ubuntu host is missing one or more security-related patches.
Description
Tomas Hoger discovered that Ruby incorrectly handled XML entity expansion. An attacker could use this flaw to cause Ruby to consume large amounts of resources, resulting in a denial of service.
Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
Solution
Update the affected packages.