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Gentoo Linux Security Advisory                           GLSA 201706-11
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: PCRE library: Denial of Service
     Date: June 06, 2017
     Bugs: #609592
       ID: 201706-11

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Synopsis
========

A vulnerability in PCRE library allows remote attackers to cause a
Denial of Service condition.

Background
==========

PCRE library is a set of functions that implement regular expression
pattern matching using the same syntax and semantics as Perl 5.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  dev-libs/libpcre            < 8.40-r1                 >= 8.40-r1

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

It was found that the compile_bracket_matchingpath function in
pcre_jit_compile.c in PCRE library is vulnerable to an out-of-bounds
read.

Impact
======

A remote attacker could possibly cause a Denial of Service condition
via a special crafted regular expression.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All PCRE library users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=dev-libs/libpcre-8.40-r1"

References
==========

[ 1 ] CVE-2017-6004
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-6004

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

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

 https://security.gentoo.org/glsa/201706-11

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.

License
=======

Copyright 2017 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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