Ncipher Ncore

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.

nCipher firmware before V10, as used by (1) nShield, (2) nForce, (3) netHSM, (4) payShield, (5) SecureDB, (6) DSE200 Document Sealing Engine, (7) Time Source Master Clock (TSMC), and possibly other products, contains certain options that were only intended for testing and not production, which might allow remote attackers to obtain information about encryption keys and crack those keys with less effort than brute force.