CVE-2018-6594

HIGH

Dlitz Pycrypto < 2.6.1 - Weak Encryption

Title source: rule
STIX 2.1

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.

References (6)

Core 6
Core References
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3616-1/
Exploit, Issue Tracking, Third Party Advisory x_refsource_misc
https://github.com/dlitz/pycrypto/issues/253
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/02/msg00018.html
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3616-2/
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/202007-62

Scores

CVSS v3 7.5
EPSS 0.0080
EPSS Percentile 74.1%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-326
Status published
Products (7)
canonical/ubuntu_linux 12.04
canonical/ubuntu_linux 14.04
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 17.10
debian/debian_linux 7.0
dlitz/pycrypto < 2.6.1
pypi/pycrypto 0PyPI
Published Feb 03, 2018
Tracked Since Feb 18, 2026