Apache Tomcat Authentication Header Realm Name Information Disclosure Vulnerability

Apache Tomcat is prone to a remote information-disclosure vulnerability. Remote attackers can exploit this issue to obtain the host name or IP address of the Tomcat server. Information harvested may lead to further attacks. The following versions are affected: Tomcat 5.5.0 through 5.5.29 Tomcat 6.0.0 through 6.0.26 Tomcat 3.x, 4.0.x, and 5.0.x may also be affected.
Updates are available. Please see the references for more information.