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BlackBerry 4.x Dialog Box Certificate Mismatch



The remote host is affected by a certificate mismatch vulnerability.


The included browser in versions of BlackBerry OS 4.5.0 before, 4.6.0 before, 4.6.1 before, 4.7.0 before, and 4.7.1 before does not properly handle "hidden" characters including a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows remote man-in-the-middle attackers to deceive a user into believing they are accessing a trusted site.


Upgrade the BlackBerry to, or later. If 4.7.x cannot be installed, versions,,, and are also patched for this vulnerability.