[gentoo-announce] [ GLSA 200807-16 ] Python: Multiple vulnerabilities

[news 28]

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Gentoo Linux Security Advisory GLSA 200807-16

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http://security.gentoo.org/

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Severity: Normal

Title: Python: Multiple vulnerabilities

Date: July 31, 2008

Bugs: #230640, #232137

ID: 200807-16

 

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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

-------------------------------------------------------------------

1 dev-lang/python < 2.5.2-r6 *>= 2.4.4-r14

>= 2.5.2-r6

 

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

==========

 

[ 1 ] CVE-2008-2315

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2315

[ 2 ] CVE-2008-2316

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2316

[ 3 ] CVE-2008-3142

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3142

[ 4 ] CVE-2008-3143

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3143

[ 5 ] CVE-2008-3144

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3144

 

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 ( -at -) gentoo.org or alternatively, you may file a bug at

http://bugs.gentoo.org.

 

License

=======

 

Copyright 2008 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