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Gentoo Linux Security Advisory GLSA 200907-03
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http://security.gentoo.org/
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Severity: Normal
Title: APR Utility Library: Multiple vulnerabilities
Date: July 04, 2009
Bugs: #268643, #272260, #274193
ID: 200907-03
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Synopsis
========
Multiple vulnerabilities in the Apache Portable Runtime Utility Library
might enable remote attackers to cause a Denial of Service or disclose
sensitive information.
Background
==========
The Apache Portable Runtime Utility Library (aka apr-util) provides an
interface to functionality such as XML parsing, string matching and
databases connections.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-libs/apr-util < 1.3.7 >= 1.3.7
Description
===========
Multiple vulnerabilities have been discovered in the APR Utility
Library:
* Matthew Palmer reported a heap-based buffer underflow while
compiling search patterns in the apr_strmatch_precompile() function
in strmatch/apr_strmatch.c (CVE-2009-0023).
* kcope reported that the expat XML parser in xml/apr_xml.c does not
limit the amount of XML entities expanded recursively
(CVE-2009-1955).
* C. Michael Pilato reported an off-by-one error in the
apr_brigade_vprintf() function in buckets/apr_brigade.c
(CVE-2009-1956).
Impact
======
A remote attacker could exploit these vulnerabilities to cause a Denial
of Service (crash or memory exhaustion) via an Apache HTTP server
running mod_dav or mod_dav_svn, or using several configuration files.
Additionally, a remote attacker could disclose sensitive information or
cause a Denial of Service by sending a specially crafted input. NOTE:
Only big-endian architectures such as PPC and HPPA are affected by the
latter flaw.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Apache Portable Runtime Utility Library users should upgrade to the
latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/apr-util-1.3.7"
References
==========
[ 1 ] CVE-2009-0023
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0023
[ 2 ] CVE-2009-1955
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1955
[ 3 ] CVE-2009-1956
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1956
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200907-03.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@xxxxxxxxxx or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2009 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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