[ GLSA 200508-17 ] libpcre: Heap integer overflow

[Stefan Cornelius <dercorny () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200508-17
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                                            http://security.gentoo.org/
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  Severity: High
     Title: libpcre: Heap integer overflow
      Date: August 25, 2005
      Bugs: #103337
        ID: 200508-17

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Synopsis
========

libpcre is vulnerable to a heap integer overflow, possibly leading to
the execution of arbitrary code.

Background
==========

libpcre is a library providing functions for Perl-compatible regular
expressions.

Affected packages
=================

    -------------------------------------------------------------------
     Package           /  Vulnerable  /                     Unaffected
    -------------------------------------------------------------------
  1  dev-libs/libpcre        < 6.3                              >= 6.3

Description
===========

libpcre fails to check certain quantifier values in regular expressions
for sane values.

Impact
======

An attacker could possibly exploit this vulnerability to execute
arbitrary code by sending specially crafted regular expressions to
applications making use of the libpcre library.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All libpcre users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-libs/libpcre-6.3"

References
==========

  [ 1 ] CAN-2005-2491
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2491
  [ 2 ] SecurityTracker Alert ID 1014744
        http://www.securitytracker.com/alerts/2005/Aug/1014744.html

Availability
============

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

  http://security.gentoo.org/glsa/glsa-200508-17.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 2005 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/2.0

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