GLSA 200903-11: PyCrypto: Execution of arbitrary code

http://security.gentoo.org/

Severity:	normal
Title:	PyCrypto: Execution of arbitrary code
Date:	03/09/2009
Bugs:	#258049
ID:	200903-11

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	Architecture(s)
dev-python/pycrypto	< 2.0.1-r8	>= 2.0.1-r8	All supported architectures

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

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 https://bugs.gentoo.org.