USN-2397-1: Ruby vulnerabilities

04 November 2014

Several security issues were fixed in Ruby.

Releases

Packages

  • ruby1.8 - Object-oriented scripting language
  • ruby1.9.1 - Object-oriented scripting language
  • ruby2.0 - Object-oriented scripting language
  • ruby2.1 - Object-oriented scripting language

Details

Will Wood discovered that Ruby incorrectly handled the encodes() function.
An attacker could possibly use this issue to cause Ruby to crash, resulting
in a denial of service, or possibly execute arbitrary code. The default
compiler options for affected releases should reduce the vulnerability to a
denial of service. (CVE-2014-4975)

Willis Vandevanter 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. (CVE-2014-8080)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 14.10
Ubuntu 14.04
Ubuntu 12.04

In general, a standard system update will make all the necessary changes.