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nCipher Insecure CBC-MAC API Vulnerability

Certain nCipher products are susceptible to an insecure CBC-MAC (Cipher Block Chaining-Message Authentication Code) API vulnerability. This issue is due to a flaw in the API that allows programmers to use insecure CBC-MAC IVs (Initialization Vector).

This issue allows remote attackers to modify data that is protected by the affected CBC-MAC protocol. This allows attackers to perform man-in-the-middle attacks against software that uses the affected insecure APIs. Other attacks may also be possible.