Information Exposure Affecting pycrypto package, versions [0,]


0.0
high

Snyk CVSS

    Attack Complexity Low
    Confidentiality High

    Threat Intelligence

    Exploit Maturity Proof of concept
    EPSS 0.33% (71st percentile)
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NVD
7.5 high
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Red Hat
5.3 medium

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  • Snyk ID SNYK-PYTHON-PYCRYPTO-42047
  • published 6 Feb 2018
  • disclosed 3 Feb 2018
  • credit Weikeng Chen, TElgamal

How to fix?

There is no fixed version for pycrypto.

Overview

pycrypto is a collection of both secure hash functions (such as SHA256 and RIPEMD160), and various encryption algorithms (AES, DES, RSA, ElGamal, etc.).

Affected versions of this package are vulnerable to Insecure Encryption, which can lead to Information Exposure.

It 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.

References