GLSA 200807-01: Python: Multiple integer overflows

http://security.gentoo.org/

Severity:	normal
Title:	Python: Multiple integer overflows
Date:	07/01/2008
Bugs:	#216673, #217221
ID:	200807-01

Synopsis

Multiple integer overflows may allow for Denial of Service.

Background

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

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
dev-lang/python	< 2.4.4-r13	>= 2.3.6-r6	All supported architectures

Description

Multiple vulnerabilities were discovered in Python:

David Remahl reported multiple integer overflows in the file imageop.c, leading to a heap-based buffer overflow (CVE-2008-1679). This issue is due to an incomplete fix for CVE-2007-4965.
Justin Ferguson discovered that an integer signedness error in the zlib extension module might trigger insufficient memory allocation and a buffer overflow via a negative signed integer (CVE-2008-1721).
Justin Ferguson discovered that insufficient input validation in the PyString_FromStringAndSize() function might lead to a buffer overflow (CVE-2008-1887).

Impact

A remote attacker could exploit these vulnerabilities to cause a Denial of Service or possibly the remote execution of arbitrary code with the privileges of the user running Python.

Workaround

There is no known workaround at this time.

Resolution

The imageop module is no longer built in the unaffected versions.

All Python 2.3 users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-lang/python-2.3.6-r6"

All Python 2.4 users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-lang/python-2.4.4-r13"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200807-01.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.