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Gentoo Linux Security Advisory                           GLSA 200802-08
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http://security.gentoo.org/ 
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  Severity: Normal
     Title: Boost: Denial of Service
      Date: February 14, 2008
      Bugs: #205955
        ID: 200802-08

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Synopsis
=======
Two vulnerabilities have been reported in Boost, each one possibly
resulting in a Denial of Service.

Background
=========
Boost is a set of C++ libraries, including the Boost.Regex library to
process regular expressions.

Affected packages
================
    -------------------------------------------------------------------
     Package         /   Vulnerable   /                     Unaffected
    -------------------------------------------------------------------
  1  dev-libs/boost      < 1.34.1-r2                      >= 1.34.1-r2

Description
==========
Tavis Ormandy and Will Drewry from the Google Security Team reported a
failed assertion in file regex/v4/perl_matcher_non_recursive.hpp
(CVE-2008-0171) and a NULL pointer dereference in function
get_repeat_type() file basic_regex_creator.hpp (CVE-2008-0172) when
processing regular expressions.

Impact
=====
A remote attacker could provide specially crafted regular expressions
to an application using Boost, resulting in a crash.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All Boost users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-libs/boost-1.34.1-r2"

References
=========
  [ 1 ] CVE-2008-0171
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0171 
  [ 2 ] CVE-2008-0172
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0172 

Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200802-08.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 
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 

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