Not vulnerable. This issue did not affect the versions of ruby as shipped with Red Hat Enterprise Linux 5 and 6 as they did not provide version 1.9.x, which is the vulnerable version of ruby.
CVSS v2 metrics
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Red Hat Security Errata
|Red Hat OpenShift Enterprise Client Tools (rubygem-ruby_parser)||RHSA-2013:0582||2013-02-28|
Affected Packages State
|Red Hat Enterprise Linux 5||ruby||Not affected|
|Red Hat Enterprise Linux 6||ruby||Not affected|