[gentoo-announce] [ GLSA 200903-11 ] PyCrypto: Execution of arbitrary code

[news 28]

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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 < 2.0.1-r8 >= 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 ">=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 ( -at -) 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