Bugzilla 2.x and 3.x before 3.4.14, 3.5.x and 3.6.x before 3.6.8, 3.7.x and 4.0.x before 4.0.4, and 4.1.x and 4.2.x before 4.2rc2 does not reject non-ASCII characters in e-mail addresses of new user accounts, which makes it easier for remote authenticated users to spoof other user accounts by choosing a similar e-mail address.

References

• https://nvd.nist.gov/vuln/detail/CVE-2012-0448
• https://bugzilla.mozilla.org/show_bug.cgi?id=714472
• https://exchange.xforce.ibmcloud.com/vulnerabilities/72877
• http://secunia.com/advisories/47814
• http://www.securityfocus.com/bid/51784
• http://www.securitytracker.com/id?1026623
• http://www.bugzilla.org/security/3.4.13