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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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