Missing Required Cryptographic Step The advisory has been revoked - it doesn't affect any version of package python-crypto.src (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL10-PYTHONCRYPTOSRC-12614877
- published11 Sept 2025
- disclosed3 Feb 2018
Introduced: 3 Feb 2018
CVE-2018-6594 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream python-crypto.src package and not the python-crypto.src package as distributed by RHEL.
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.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1542313
- https://access.redhat.com/security/cve/CVE-2018-6594
- https://github.com/TElgamal/attack-on-pycrypto-elgamal
- https://github.com/dlitz/pycrypto/issues/253
- https://lists.debian.org/debian-lts-announce/2018/02/msg00018.html
- https://security.gentoo.org/glsa/202007-62
- https://usn.ubuntu.com/3616-1/
- https://usn.ubuntu.com/3616-2/