Mozilla Suite 1.7.13, Mozilla Firefox 1.5.0.3 and possibly other versions before before 1.8.0, and Netscape 7.2 and 8.1, and possibly other versions and products, allows remote user-assisted attackers to obtain information such as the installation path by causing exceptions to be thrown and checking the message contents.
https://exchange.xforce.ibmcloud.com/vulnerabilities/26667
https://bugzilla.mozilla.org/show_bug.cgi?id=267645
http://www.securityfocus.com/archive/1/434696/100/0/threaded
http://www.mandriva.com/security/advisories?name=MDKSA-2006:145
http://www.mandriva.com/security/advisories?name=MDKSA-2006:143
http://securityreason.com/securityalert/960
http://secunia.com/advisories/21532
http://secunia.com/advisories/20256