GLSA 200807-16: Python: Multiple vulnerabilities

http://security.gentoo.org/

Severity:	normal
Title:	Python: Multiple vulnerabilities
Date:	07/31/2008
Bugs:	#230640, #232137
ID:	200807-16

Synopsis

Multiple vulnerabilities in Python may allow for the execution of arbitrary code.

Background

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

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
dev-lang/python	< 2.5.2-r6	>= 2.4.4-r14	All supported architectures

Description

Multiple vulnerabilities were discovered in Python:

David Remahl of Apple Product Security reported several integer overflows in core modules such as stringobject, unicodeobject, bufferobject, longobject, tupleobject, stropmodule, gcmodule, mmapmodule (CVE-2008-2315).
David Remahl of Apple Product Security also reported an integer overflow in the hashlib module, leading to unreliable cryptographic digest results (CVE-2008-2316).
Justin Ferguson reported multiple buffer overflows in unicode string processing that only affect 32bit systems (CVE-2008-3142).
The Google Security Team reported multiple integer overflows (CVE-2008-3143).
Justin Ferguson reported multiple integer underflows and overflows in the PyOS_vsnprintf() function, and an off-by-one error when passing zero-length strings, leading to memory corruption (CVE-2008-3144).

Impact

A remote attacker could exploit these vulnerabilities in Python applications or daemons that pass user-controlled input to vulnerable functions. Exploitation might lead to the execution of arbitrary code or a Denial of Service. Vulnerabilities within the hashlib might lead to weakened cryptographic protection of data integrity or authenticity.

Workaround

There is no known workaround at this time.

Resolution

All Python 2.4 users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-lang/python-2.4.4-r14"

All Python 2.5 users should upgrade to the latest version:


    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-lang/python-2.5.2-r6"

Please note that Python 2.3 is masked since June 24, and we will not be releasing updates to it. It will be removed from the tree in the near future.

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200807-16.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.