Gentoo Linux Security Advisory 201206-23 - PyCrypto generates weak ElGamal keys. Versions less than 2.6 are affected.
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Gentoo Linux Security Advisory GLSA 201206-23
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http://security.gentoo.org/
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Severity: Normal
Title: PyCrypto: Weak key generation
Date: June 24, 2012
Bugs: #417625
ID: 201206-23
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Synopsis
========
PyCrypto generates weak ElGamal keys.
Background
==========
PyCrypto is the Python Cryptography Toolkit.
Affected packages
=================
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Package / Vulnerable / Unaffected
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1 dev-python/pycrypto < 2.6 >= 2.6
Description
===========
An error in the generate() function in ElGamal.py causes PyCrypto to
generate weak ElGamal keys.
Impact
======
A remote attacker might be able to derive private keys.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All PyCrypto users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-python/pycrypto-2.6"
References
==========
[ 1 ] CVE-2012-2417
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-2417
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-201206-23.xml
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.
License
=======
Copyright 2012 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5