GLSA 200907-16: Python: Integer overflows

http://security.gentoo.org/

Severity:	normal
Title:	Python: Integer overflows
Date:	07/19/2009
Bugs:	#246991
ID:	200907-16

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	Architecture(s)
dev-lang/python	< 2.5.4-r2	>= 2.5.4-r2	All supported architectures

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

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.