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[gentoo-announce] [ GLSA 201706-11 ] PCRE library: Denial of Service

Posted on 06 June 2017
Gentoo-announce

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From: Kristian Fiskerstrand <k_f@gentoo.org>
Reply-To: security@gentoo.org
To: gentoo-announce@lists.gentoo.org
Message-ID: <c26c2948-a1ca-4a32-c74c-a5bac34b4698@gentoo.org>
Subject: [ GLSA 201706-11 ] PCRE library: Denial of Service

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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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