The MITRE CVE dictionary describes this issue as:
Mozilla Firefox 3.0.5 on Windows Vista allows remote attackers to cause a denial of service (application crash) via JavaScript code with a long string value for the hash property (aka location.hash). NOTE: it was later reported that earlier versions are also affected, and that the impact is CPU consumption and application hang in unspecified circumstances perhaps involving other platforms.
Find out more about CVE-2008-5715 from the
MITRE CVE dictionary dictionary and
NIST NVD.
Statement
Red Hat does not consider a crash of a client application such as Firefox to be a security issue.