National Cyber Awareness System

Vulnerability Summary for CVE-2012-2417

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.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: MISC

Name: https://github.com/Legrandin/pycrypto/commit/9f912f13df99ad3421eff360d6a62d7dbec755c2

Type: Patch Information; Exploit

Hyperlink:https://github.com/Legrandin/pycrypto/commit/9f912f13df99ad3421eff360d6a62d7dbec755c2

External Source: SUSE

Name: openSUSE-SU-2012:0830

Hyperlink:https://hermes.opensuse.org/messages/15083589

External Source: CONFIRM

Name: https://github.com/dlitz/pycrypto/blob/373ea760f21701b162e8c4912a66928ee30d401a/ChangeLog

Hyperlink:https://github.com/dlitz/pycrypto/blob/373ea760f21701b162e8c4912a66928ee30d401a/ChangeLog

External Source: MISC

Name: https://bugs.launchpad.net/pycrypto/+bug/985164

Hyperlink:https://bugs.launchpad.net/pycrypto/+bug/985164

External Source: XF

Name: pycrypto-keys-weak-security(75871)

Hyperlink:http://xforce.iss.net/xforce/xfdb/75871

External Source: BID

Name: 53687

Hyperlink:http://www.securityfocus.com/bid/53687

External Source: OSVDB

Name: 82279

Hyperlink:http://www.osvdb.org/82279

External Source: MLIST

Name: [oss-security] 20120524 CVE-2012-2417 - PyCrypto <= 2.5 insecure ElGamal key generation

Hyperlink:http://www.openwall.com/lists/oss-security/2012/05/25/1

External Source: MANDRIVA

Name: MDVSA-2012:117

Hyperlink:http://www.mandriva.com/security/advisories?name=MDVSA-2012:117

External Source: DEBIAN

Name: DSA-2502

Hyperlink:http://www.debian.org/security/2012/dsa-2502

External Source: SECUNIA

Name: 49263

Type: Advisory

Hyperlink:http://secunia.com/advisories/49263

External Source: FEDORA

Name: FEDORA-2012-8470

Hyperlink:http://lists.fedoraproject.org/pipermail/package-announce/2012-June/081789.html

External Source: FEDORA

Name: FEDORA-2012-8490

Hyperlink:http://lists.fedoraproject.org/pipermail/package-announce/2012-June/081759.html

External Source: FEDORA

Name: FEDORA-2012-8392

Hyperlink:http://lists.fedoraproject.org/pipermail/package-announce/2012-June/081713.html