The SSL client implementation in BEA WebLogic Server 7.0 SP7, 8.1 SP2 through SP6, 9.0, 9.1, 9.2 Gold through MP2, and 10.0 sometimes selects the null cipher when others are available, which might allow remote attackers to intercept communications.
https://exchange.xforce.ibmcloud.com/vulnerabilities/36322
http://www.vupen.com/english/advisories/2007/3008
http://www.securityfocus.com/bid/25472
http://securitytracker.com/id?1018619