A vulnerability has been found and corrected in php-ZendFramework:

The (1) Zend_Ldap class in Zend before 1.12.9 and (2) ZendLdap
component in Zend 2.x before 2.2.8 and 2.3.x before 2.3.3 allows
remote attackers to bypass authentication via a password starting with
a null byte, which triggers an unauthenticated bind (CVE-2014-8088).

The updated packages have been upgraded to the latest ZendFramework
(1.12.9) version which is not vulnerable to this issue.