Date: Tue, 08 Feb 2005 22:32:37 +0100
From: Thierry Carrez <koon@gentoo.org.>
To: gentoo-announce@lists.gentoo.org
Subject: [ GLSA 200502-09 ] Python: Arbitrary code execution through SimpleXMLRPCServer
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Gentoo Linux Security Advisory GLSA 200502-09
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http://security.gentoo.org/
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Severity: High
Title: Python: Arbitrary code execution through SimpleXMLRPCServer
Date: February 08, 2005
Bugs: #80592
ID: 200502-09
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Synopsis
========
Python-based XML-RPC servers may be vulnerable to remote execution of
arbitrary code.
Background
==========
Python is an interpreted, interactive, object-oriented, cross-platform
programming language.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-lang/python <= 2.3.4 >= 2.3.4-r1
*>= 2.3.3-r2
*>= 2.2.3-r6
Description
===========
Graham Dumpleton discovered that XML-RPC servers making use of the
SimpleXMLRPCServer library that use the register_instance() method to
register an object without a _dispatch() method are vulnerable to a
flaw allowing to read or modify globals of the associated module.
Impact
======
A remote attacker may be able to exploit the flaw in such XML-RPC
servers to execute arbitrary code on the server host with the rights of
the XML-RPC server.
Workaround
==========
Python users that don't make use of any SimpleXMLRPCServer-based
XML-RPC servers, or making use of servers using only the
register_function() method are not affected.
Resolution
==========
All Python users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose dev-lang/python
References
==========
[ 1 ] CAN-2005-0089
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0089
[ 2 ] Python PSF-2005-001
http://www.python.org/security/PSF-2005-001/
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200502-09.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 2005 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/2.0
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