Argument injection vulnerability involving Mozilla, when certain URIs are registered, allows remote attackers to conduct cross-browser scripting attacks and execute arbitrary commands via shell metacharacters in an unspecified URI, which are inserted into the command line when invoking the handling process, a similar issue to CVE-2007-3670.

References

• https://nvd.nist.gov/vuln/detail/CVE-2007-4039
• http://larholm.com/2007/07/25/mozilla-protocol-abuse/
• http://seclists.org/fulldisclosure/2007/Jul/0557.html