Firefox before 1.0.1 and Mozilla before 1.7.6 truncates long sub-domains or paths for display, which may allow remote malicious web sites to spoof legitimate sites and facilitate phishing attacks.
secunia.com/advisories/13599
secunia.com/secunia_research/2004-15/advisory/
www.gentoo.org/security/en/glsa/glsa-200503-10.xml
www.gentoo.org/security/en/glsa/glsa-200503-30.xml
www.mozilla.org/security/announce/mfsa2005-23.html
www.redhat.com/support/errata/RHSA-2005-176.html
www.redhat.com/support/errata/RHSA-2005-384.html
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A100035
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9924