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Gentoo Linux Security Advisory                           GLSA 201702-14
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: PyCrypto: Remote execution of arbitrary code
     Date: February 20, 2017
     Bugs: #576494
       ID: 201702-14

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Synopsis
========

A heap-based buffer overflow in PyCrypto might allow remote attackers
to execute arbitrary code.

Background
==========

The Python Cryptography Toolkit (PyCrypto) is a collection of both
secure hash functions (such as SHA256 and RIPEMD160), and various
encryption algorithms (AES, DES, RSA, ElGamal, etc.).

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  dev-python/pycrypto         < 2.6.1-r2               >= 2.6.1-r2

Description
===========

A heap-based buffer overflow vulnerability has been discovered in
PyCrypto. Please review the CVE identifier referenced below for
details.

Impact
======

A remote attacker, able to control the mode of operation in PyCrypto's
AES module, could possibly execute arbitrary code with the privileges
of the process or cause a Denial of Service condition.

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-2.6.1-r2"

References
==========

[ 1 ] CVE-2013-7459
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-7459

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/201702-14

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 2017 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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