GHSA-5XXP-2VRJ-X855 SM9 Infinity-Point Ciphertext Forgery Vulnerability

Overview The current SM9 decryption implementation contains an infinity-point ciphertext forgery vulnerability. The root cause is that, during decryption, the elliptic-curve point C1 in the ciphertext is only deserialized and checked to be on the curve, but the implementation does not explicitly...