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[ GLSA 200907-16 ] Python: Integer overflows

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Gentoo Linux Security Advisory                           GLSA 200907-16
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Python: Integer overflows
      Date: July 19, 2009
      Bugs: #246991
        ID: 200907-16

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Synopsis
========

Multiple integer overflows in Python have an unspecified impact.

Background
==========

Python is an interpreted, interactive, object-oriented programming
language.

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

    -------------------------------------------------------------------
     Package          /  Vulnerable  /                      Unaffected
    -------------------------------------------------------------------
  1  dev-lang/python     < 2.5.4-r2                        >= 2.5.4-r2
                                                             *>= 2.4.6

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

Chris Evans reported multiple integer overflows in the expandtabs
method, as implemented by (1) the string_expandtabs function in
Objects/stringobject.c and (2) the unicode_expandtabs function in
Objects/unicodeobject.c.

Impact
======

A remote attacker could exploit these vulnerabilities in Python
applications or daemons that pass user-controlled input to vulnerable
functions. The security impact is currently unknown but may include the
execution of arbitrary code or a Denial of Service.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Python 2.5 users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-lang/python-2.5.4-r2"

All Python 2.4 users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-lang/python-2.4.6"

References
==========

  [ 1 ] CVE-2008-5031
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5031

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

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

  http://security.gentoo.org/glsa/glsa-200907-16.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.

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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• [ GLSA 200907-16 ] Python: Integer overflows Robert Buchholz (Jul 20)