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[ GLSA 201206-23 ] PyCrypto: Weak key generation

 

 

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ackle at gentoo

Jun 24, 2012, 6:13 AM

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[ GLSA 201206-23 ] PyCrypto: Weak key generation

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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
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
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 [at] gentoo 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
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