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CVE-2018-6594

Status Candidate

Overview

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.

Related Files

Gentoo Linux Security Advisory 202007-62
Posted Jul 31, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202007-62 - A flaw in PyCrypto allow remote attackers to obtain sensitive information. Versions less than or equal to 2.6.1-r2 are affected.

tags | advisory, remote
systems | linux, gentoo
advisories | CVE-2018-6594
MD5 | 80d76ca85d2e9711881765ca3dea3df9
Ubuntu Security Notice USN-3616-2
Posted Apr 9, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3616-2 - USN-3616-1 fixed a vulnerability in Python Crypto. This update provides the corresponding update for Ubuntu 12.04 ESM. It was discovered that Python Crypto incorrectly generated ElGamal key parameters. A remote attacker could possibly use this issue to obtain sensitive information. Various other issues were also addressed.

tags | advisory, remote, crypto, python
systems | linux, ubuntu
advisories | CVE-2018-6594
MD5 | bba26afb207ddfb1391a3848e4cd104d
Ubuntu Security Notice USN-3616-1
Posted Apr 3, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3616-1 - It was discovered that Python Crypto incorrectly generated ElGamal key parameters. A remote attacker could possibly use this issue to obtain sensitive information.

tags | advisory, remote, crypto, python
systems | linux, ubuntu
advisories | CVE-2018-6594
MD5 | fcedecfcc4487ed429b56fae81f791b6
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