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CVE-2012-2417

Status Candidate

Overview

PyCrypto before 2.6 does not produce appropriate prime numbers when using an ElGamal scheme to generate a key, which reduces the signature space or public key space and makes it easier for attackers to conduct brute force attacks to obtain the private key.

Related Files

Mandriva Linux Security Advisory 2013-120
Posted Apr 11, 2013
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2013-120 - PyCrypto before 2.6 does not produce appropriate prime numbers when using an ElGamal scheme to generate a key, which reduces the signature space or public key space and makes it easier for attackers to conduct brute force attacks to obtain the private key. Note: any ElGamal keys that have previously been generated by PyCrypto should be regenerated after installing this update.

tags | advisory
systems | linux, mandriva
advisories | CVE-2012-2417
MD5 | 2f3d3f8ff51518ed0b2508106ec9a342
Mandriva Linux Security Advisory 2012-117
Posted Jul 28, 2012
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2012-117 - PyCrypto before 2.6 does not produce appropriate prime numbers when using an ElGamal scheme to generate a key, which reduces the signature space or public key space and makes it easier for attackers to conduct brute force attacks to obtain the private key. The updated packages have been patched to correct this issue.

tags | advisory
systems | linux, mandriva
advisories | CVE-2012-2417
MD5 | b7103dbfa58c3e1bfce9542a1ea1e2d5
Ubuntu Security Notice USN-1484-1
Posted Jun 29, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1484-1 - It was discovered that PyCrypto produced inappropriate prime numbers when generating ElGamal keys. An attacker could use this flaw to facilitate brute-forcing of ElGamal encryption keys.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2012-2417
MD5 | a0092c020ab04f0de0552b2a64646028
Gentoo Linux Security Advisory 201206-23
Posted Jun 24, 2012
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201206-23 - PyCrypto generates weak ElGamal keys. Versions less than 2.6 are affected.

tags | advisory
systems | linux, gentoo
advisories | CVE-2012-2417
MD5 | deba2012546949e4eb70c7d70fc1602c
Debian Security Advisory 2502-1
Posted Jun 24, 2012
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2502-1 - It was discovered that that the ElGamal code in PythonCrypto, a collection of cryptographic algorithms and protocols for Python used insecure insufficient prime numbers in key generation, which lead to a weakened signature or public key space, allowing easier brute force attacks on such keys.

tags | advisory, protocol, python
systems | linux, debian
advisories | CVE-2012-2417
MD5 | fe99f3b30e1e03bd4bf470c869ebd51d
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