| Package | Affected versions | Patched versions |
|---|---|---|
| pycrypto | ≤ 2.6.1all versions | |
| pycrypto | ≤ 2.6.1 |
lib/Crypto/PublicKey/ElGamal.py in PyCrypto through 2.6.1 generates weak ElGamal key parameters, which allows attackers to obtain sensitive information by reading ciphertext data (i.e., it does not have semantic security in face of a ciphertext-only attack). The Decisional Diffie-Hellman (DDH) assumption does not hold for PyCrypto's ElGamal implementation.
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