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Category:   Application (Generic)  >   libxslt Vendors:   Gnome Development Team
(Red Hat Issues Fix) libxslt XSL Style Sheet Array Overflow May Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1020072
SecurityTracker URL:  http://securitytracker.com/id/1020072
CVE Reference:   CVE-2008-1767   (Links to External Site)
Date:  May 21 2008
Impact:   Denial of service via network, Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 1.1.24
Description:   A vulnerability was reported in libxslt. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create a specially crafted XSL style sheet file that, when processed by the target application using libxslt, will trigger an array overflow and execute arbitrary code on the target system. The code will run with the privileges of the target application.

The vulnerability resides in 'libxslt/pattern.c'.

Anthony de Almeida Lopes reported this vulnerability.

Impact:   A remote user can create a file that, when processed by the target application, will cause the application to crash or execute arbitrary code.
Solution:   Red Hat has released a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2008-0287.html

Vendor URL:  xmlsoft.org/XSLT/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  2.1, 3, 4, 5

Message History:   This archive entry is a follow-up to the message listed below.
May 21 2008 libxslt XSL Style Sheet Array Overflow May Let Remote Users Execute Arbitrary Code



 Source Message Contents

Subject:  [RHSA-2008:0287-01] Important: libxslt security update


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: libxslt security update
Advisory ID:       RHSA-2008:0287-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2008-0287.html
Issue date:        2008-05-21
CVE Names:         CVE-2008-1767 
=====================================================================

1. Summary:

Updated libxslt packages that fix a security issue are now available.

This update has been rated as having important security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1  - i386, ia64
Red Hat Linux Advanced Workstation 2.1 - ia64
Red Hat Enterprise Linux ES version 2.1 - i386
Red Hat Enterprise Linux WS version 2.1 - i386
Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Desktop version 3 - i386, x86_64
Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

3. Description:

libxslt is a C library, based on libxml, for parsing of XML files into
other textual formats (eg HTML, plain text and other XML representations of
the underlying data). It uses the standard XSLT stylesheet transformation
mechanism and, being written in plain ANSI C, is designed to be simple to
incorporate into other applications

Anthony de Almeida Lopes reported the libxslt library did not properly
process long "transformation match" conditions in the XSL stylesheet files.
An attacker could create a malicious XSL file that would cause a crash, or,
possibly, execute and arbitrary code with the privileges of the application
using libxslt library to perform XSL transformations. (CVE-2008-1767)

All users are advised to upgrade to these updated packages, which contain a
backported patch to resolve this issue.

4. Solution:

Before applying this update, make sure that all previously-released errata
relevant to your system have been applied.

This update is available via Red Hat Network.  Details on how to use the
Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

5. Bugs fixed (http://bugzilla.redhat.com/):

446809 - CVE-2008-1767 libxslt: fixed-sized steps array overflow via "template match" condition in XSL file

6. Package List:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 :

Source:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/libxslt-1.0.15-3.src.rpm

i386:
libxslt-1.0.15-3.i386.rpm
libxslt-devel-1.0.15-3.i386.rpm
libxslt-python-1.0.15-3.i386.rpm

ia64:
libxslt-1.0.15-3.ia64.rpm
libxslt-devel-1.0.15-3.ia64.rpm
libxslt-python-1.0.15-3.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

Source:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/libxslt-1.0.15-3.src.rpm

ia64:
libxslt-1.0.15-3.ia64.rpm
libxslt-devel-1.0.15-3.ia64.rpm
libxslt-python-1.0.15-3.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

Source:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/libxslt-1.0.15-3.src.rpm

i386:
libxslt-1.0.15-3.i386.rpm
libxslt-devel-1.0.15-3.i386.rpm
libxslt-python-1.0.15-3.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

Source:
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/libxslt-1.0.15-3.src.rpm

i386:
libxslt-1.0.15-3.i386.rpm
libxslt-devel-1.0.15-3.i386.rpm
libxslt-python-1.0.15-3.i386.rpm

Red Hat Enterprise Linux AS version 3:

Source:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/libxslt-1.0.33-6.src.rpm

i386:
libxslt-1.0.33-6.i386.rpm
libxslt-debuginfo-1.0.33-6.i386.rpm
libxslt-devel-1.0.33-6.i386.rpm

ia64:
libxslt-1.0.33-6.i386.rpm
libxslt-1.0.33-6.ia64.rpm
libxslt-debuginfo-1.0.33-6.i386.rpm
libxslt-debuginfo-1.0.33-6.ia64.rpm
libxslt-devel-1.0.33-6.ia64.rpm

ppc:
libxslt-1.0.33-6.ppc.rpm
libxslt-1.0.33-6.ppc64.rpm
libxslt-debuginfo-1.0.33-6.ppc.rpm
libxslt-debuginfo-1.0.33-6.ppc64.rpm
libxslt-devel-1.0.33-6.ppc.rpm

s390:
libxslt-1.0.33-6.s390.rpm
libxslt-debuginfo-1.0.33-6.s390.rpm
libxslt-devel-1.0.33-6.s390.rpm

s390x:
libxslt-1.0.33-6.s390.rpm
libxslt-1.0.33-6.s390x.rpm
libxslt-debuginfo-1.0.33-6.s390.rpm
libxslt-debuginfo-1.0.33-6.s390x.rpm
libxslt-devel-1.0.33-6.s390x.rpm

x86_64:
libxslt-1.0.33-6.i386.rpm
libxslt-1.0.33-6.x86_64.rpm
libxslt-debuginfo-1.0.33-6.i386.rpm
libxslt-debuginfo-1.0.33-6.x86_64.rpm
libxslt-devel-1.0.33-6.x86_64.rpm

Red Hat Desktop version 3:

Source:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/libxslt-1.0.33-6.src.rpm

i386:
libxslt-1.0.33-6.i386.rpm
libxslt-debuginfo-1.0.33-6.i386.rpm
libxslt-devel-1.0.33-6.i386.rpm

x86_64:
libxslt-1.0.33-6.i386.rpm
libxslt-1.0.33-6.x86_64.rpm
libxslt-debuginfo-1.0.33-6.i386.rpm
libxslt-debuginfo-1.0.33-6.x86_64.rpm
libxslt-devel-1.0.33-6.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

Source:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/libxslt-1.0.33-6.src.rpm

i386:
libxslt-1.0.33-6.i386.rpm
libxslt-debuginfo-1.0.33-6.i386.rpm
libxslt-devel-1.0.33-6.i386.rpm

ia64:
libxslt-1.0.33-6.i386.rpm
libxslt-1.0.33-6.ia64.rpm
libxslt-debuginfo-1.0.33-6.i386.rpm
libxslt-debuginfo-1.0.33-6.ia64.rpm
libxslt-devel-1.0.33-6.ia64.rpm

x86_64:
libxslt-1.0.33-6.i386.rpm
libxslt-1.0.33-6.x86_64.rpm
libxslt-debuginfo-1.0.33-6.i386.rpm
libxslt-debuginfo-1.0.33-6.x86_64.rpm
libxslt-devel-1.0.33-6.x86_64.rpm

Red Hat Enterprise Linux WS version 3:

Source:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/libxslt-1.0.33-6.src.rpm

i386:
libxslt-1.0.33-6.i386.rpm
libxslt-debuginfo-1.0.33-6.i386.rpm
libxslt-devel-1.0.33-6.i386.rpm

ia64:
libxslt-1.0.33-6.i386.rpm
libxslt-1.0.33-6.ia64.rpm
libxslt-debuginfo-1.0.33-6.i386.rpm
libxslt-debuginfo-1.0.33-6.ia64.rpm
libxslt-devel-1.0.33-6.ia64.rpm

x86_64:
libxslt-1.0.33-6.i386.rpm
libxslt-1.0.33-6.x86_64.rpm
libxslt-debuginfo-1.0.33-6.i386.rpm
libxslt-debuginfo-1.0.33-6.x86_64.rpm
libxslt-devel-1.0.33-6.x86_64.rpm

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/libxslt-1.1.11-1.el4_6.1.src.rpm

i386:
libxslt-1.1.11-1.el4_6.1.i386.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.i386.rpm
libxslt-devel-1.1.11-1.el4_6.1.i386.rpm
libxslt-python-1.1.11-1.el4_6.1.i386.rpm

ia64:
libxslt-1.1.11-1.el4_6.1.i386.rpm
libxslt-1.1.11-1.el4_6.1.ia64.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.i386.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.ia64.rpm
libxslt-devel-1.1.11-1.el4_6.1.ia64.rpm
libxslt-python-1.1.11-1.el4_6.1.ia64.rpm

ppc:
libxslt-1.1.11-1.el4_6.1.ppc.rpm
libxslt-1.1.11-1.el4_6.1.ppc64.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.ppc.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.ppc64.rpm
libxslt-devel-1.1.11-1.el4_6.1.ppc.rpm
libxslt-python-1.1.11-1.el4_6.1.ppc.rpm

s390:
libxslt-1.1.11-1.el4_6.1.s390.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.s390.rpm
libxslt-devel-1.1.11-1.el4_6.1.s390.rpm
libxslt-python-1.1.11-1.el4_6.1.s390.rpm

s390x:
libxslt-1.1.11-1.el4_6.1.s390.rpm
libxslt-1.1.11-1.el4_6.1.s390x.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.s390.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.s390x.rpm
libxslt-devel-1.1.11-1.el4_6.1.s390x.rpm
libxslt-python-1.1.11-1.el4_6.1.s390x.rpm

x86_64:
libxslt-1.1.11-1.el4_6.1.i386.rpm
libxslt-1.1.11-1.el4_6.1.x86_64.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.i386.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.x86_64.rpm
libxslt-devel-1.1.11-1.el4_6.1.x86_64.rpm
libxslt-python-1.1.11-1.el4_6.1.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/libxslt-1.1.11-1.el4_6.1.src.rpm

i386:
libxslt-1.1.11-1.el4_6.1.i386.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.i386.rpm
libxslt-devel-1.1.11-1.el4_6.1.i386.rpm
libxslt-python-1.1.11-1.el4_6.1.i386.rpm

x86_64:
libxslt-1.1.11-1.el4_6.1.i386.rpm
libxslt-1.1.11-1.el4_6.1.x86_64.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.i386.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.x86_64.rpm
libxslt-devel-1.1.11-1.el4_6.1.x86_64.rpm
libxslt-python-1.1.11-1.el4_6.1.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/libxslt-1.1.11-1.el4_6.1.src.rpm

i386:
libxslt-1.1.11-1.el4_6.1.i386.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.i386.rpm
libxslt-devel-1.1.11-1.el4_6.1.i386.rpm
libxslt-python-1.1.11-1.el4_6.1.i386.rpm

ia64:
libxslt-1.1.11-1.el4_6.1.i386.rpm
libxslt-1.1.11-1.el4_6.1.ia64.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.i386.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.ia64.rpm
libxslt-devel-1.1.11-1.el4_6.1.ia64.rpm
libxslt-python-1.1.11-1.el4_6.1.ia64.rpm

x86_64:
libxslt-1.1.11-1.el4_6.1.i386.rpm
libxslt-1.1.11-1.el4_6.1.x86_64.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.i386.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.x86_64.rpm
libxslt-devel-1.1.11-1.el4_6.1.x86_64.rpm
libxslt-python-1.1.11-1.el4_6.1.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/libxslt-1.1.11-1.el4_6.1.src.rpm

i386:
libxslt-1.1.11-1.el4_6.1.i386.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.i386.rpm
libxslt-devel-1.1.11-1.el4_6.1.i386.rpm
libxslt-python-1.1.11-1.el4_6.1.i386.rpm

ia64:
libxslt-1.1.11-1.el4_6.1.i386.rpm
libxslt-1.1.11-1.el4_6.1.ia64.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.i386.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.ia64.rpm
libxslt-devel-1.1.11-1.el4_6.1.ia64.rpm
libxslt-python-1.1.11-1.el4_6.1.ia64.rpm

x86_64:
libxslt-1.1.11-1.el4_6.1.i386.rpm
libxslt-1.1.11-1.el4_6.1.x86_64.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.i386.rpm
libxslt-debuginfo-1.1.11-1.el4_6.1.x86_64.rpm
libxslt-devel-1.1.11-1.el4_6.1.x86_64.rpm
libxslt-python-1.1.11-1.el4_6.1.x86_64.rpm

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/libxslt-1.1.17-2.el5_1.1.src.rpm

i386:
libxslt-1.1.17-2.el5_1.1.i386.rpm
libxslt-debuginfo-1.1.17-2.el5_1.1.i386.rpm
libxslt-python-1.1.17-2.el5_1.1.i386.rpm

x86_64:
libxslt-1.1.17-2.el5_1.1.i386.rpm
libxslt-1.1.17-2.el5_1.1.x86_64.rpm
libxslt-debuginfo-1.1.17-2.el5_1.1.i386.rpm
libxslt-debuginfo-1.1.17-2.el5_1.1.x86_64.rpm
libxslt-python-1.1.17-2.el5_1.1.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/libxslt-1.1.17-2.el5_1.1.src.rpm

i386:
libxslt-debuginfo-1.1.17-2.el5_1.1.i386.rpm
libxslt-devel-1.1.17-2.el5_1.1.i386.rpm

x86_64:
libxslt-debuginfo-1.1.17-2.el5_1.1.i386.rpm
libxslt-debuginfo-1.1.17-2.el5_1.1.x86_64.rpm
libxslt-devel-1.1.17-2.el5_1.1.i386.rpm
libxslt-devel-1.1.17-2.el5_1.1.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/libxslt-1.1.17-2.el5_1.1.src.rpm

i386:
libxslt-1.1.17-2.el5_1.1.i386.rpm
libxslt-debuginfo-1.1.17-2.el5_1.1.i386.rpm
libxslt-devel-1.1.17-2.el5_1.1.i386.rpm
libxslt-python-1.1.17-2.el5_1.1.i386.rpm

ia64:
libxslt-1.1.17-2.el5_1.1.i386.rpm
libxslt-1.1.17-2.el5_1.1.ia64.rpm
libxslt-debuginfo-1.1.17-2.el5_1.1.i386.rpm
libxslt-debuginfo-1.1.17-2.el5_1.1.ia64.rpm
libxslt-devel-1.1.17-2.el5_1.1.ia64.rpm
libxslt-python-1.1.17-2.el5_1.1.ia64.rpm

ppc:
libxslt-1.1.17-2.el5_1.1.ppc.rpm
libxslt-1.1.17-2.el5_1.1.ppc64.rpm
libxslt-debuginfo-1.1.17-2.el5_1.1.ppc.rpm
libxslt-debuginfo-1.1.17-2.el5_1.1.ppc64.rpm
libxslt-devel-1.1.17-2.el5_1.1.ppc.rpm
libxslt-devel-1.1.17-2.el5_1.1.ppc64.rpm
libxslt-python-1.1.17-2.el5_1.1.ppc.rpm

s390x:
libxslt-1.1.17-2.el5_1.1.s390.rpm
libxslt-1.1.17-2.el5_1.1.s390x.rpm
libxslt-debuginfo-1.1.17-2.el5_1.1.s390.rpm
libxslt-debuginfo-1.1.17-2.el5_1.1.s390x.rpm
libxslt-devel-1.1.17-2.el5_1.1.s390.rpm
libxslt-devel-1.1.17-2.el5_1.1.s390x.rpm
libxslt-python-1.1.17-2.el5_1.1.s390x.rpm

x86_64:
libxslt-1.1.17-2.el5_1.1.i386.rpm
libxslt-1.1.17-2.el5_1.1.x86_64.rpm
libxslt-debuginfo-1.1.17-2.el5_1.1.i386.rpm
libxslt-debuginfo-1.1.17-2.el5_1.1.x86_64.rpm
libxslt-devel-1.1.17-2.el5_1.1.i386.rpm
libxslt-devel-1.1.17-2.el5_1.1.x86_64.rpm
libxslt-python-1.1.17-2.el5_1.1.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1767
http://www.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2008 Red Hat, Inc.
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