GLSA 200903-11 PyCrypto: Execution of arbitrary code
Posted on: 03/09/2009 03:15 PM

A new security update has been released for Gentoo Linux - PyCrypto: Execution of arbitrary code. Here the announcement:

Gentoo Linux Security Advisory GLSA 200903-11
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http://security.gentoo.org/
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Severity: Normal
Title: PyCrypto: Execution of arbitrary code
Date: March 09, 2009
Bugs: #258049
ID: 200903-11

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Synopsis
========

A buffer overflow in PyCrypto might lead to the execution of arbitrary
code when decrypting using ARC2.

Background
==========

PyCrypto is the Python Cryptography Toolkit.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-python/pycrypto lt; 2.0.1-r8 gt;= 2.0.1-r8

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

Mike Wiacek of the Google Security Team reported a buffer overflow in
the ARC2 module when processing a large ARC2 key length.

Impact
======

A remote attacker could entice a user or automated system to decrypt an
ARC2 stream in an application using PyCrypto, possibly resulting in the
execution of arbitrary code or a Denial of Service.

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 "gt;=dev-python/pycrypto-2.0.1-r8"

References
==========

[ 1 ] CVE-2009-0544
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0544

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

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

http://security.gentoo.org/glsa/glsa-200903-11.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
http://bugs.gentoo.org.

License
=======

Copyright 2009 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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