Not vulnerable. This issue did not affect the versions of Firefox as shipped with Red Hat Enterprise Linux 5 and 6 as they did not include SPDY protocol support.
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).
Affected Packages State
|Red Hat Enterprise Linux 6||firefox||Not affected|
|Red Hat Enterprise Linux 5||firefox||Not affected|