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Gentoo Linux Security Advisory                           GLSA 201206-23
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                                            https://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:

 https://security.gentoo.org/glsa/201206-23

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.

https://creativecommons.org/licenses/by-sa/2.5/