cve/2018/CVE-2018-6594.md

### [CVE-2018-6594](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6594)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

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.

### POC

#### Reference
- https://github.com/dlitz/pycrypto/issues/253
- https://github.com/dlitz/pycrypto/issues/253

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/fincham/ssh-to-pgp
- https://github.com/jakhax/pass_cli
- https://github.com/royhershkovitz/versions_vulnerability_test