The CBC-MAC integrity functions in the nCipher nCore API before 2.18 transmit the initialization vector IV as part of a message when the implementation uses a non-zero IV, which allows remote attackers to bypass integrity checks and modify messages without being detected.
secunia.com/advisories/19137
securitytracker.com/id?1015718
www.ncipher.com/resources/96/sa13_cbcmac_iv_misleading_programming_interface
www.securityfocus.com/archive/1/427150/100/0/threaded
www.securityfocus.com/bid/17011
www.vupen.com/english/advisories/2006/0862
exchange.xforce.ibmcloud.com/vulnerabilities/25062