Flaw bug created to hold information about an old flaw we knew something about. For more details see the MITRE CVE description.
MITRE description: Firefox 1.0.6 allows attackers to cause a denial of service (crash) via a Proxy Auto-Config (PAC) script that uses an eval statement. NOTE: it is not clear whether an untrusted party has any role in triggering this issue, so it might not be a vulnerability.