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             AUSCERT External Security Bulletin Redistribution

                     ESB-2004.0784 -- RHSA-2004:650-01
           Updated libxml package fixes security vulnerabilities
                             17 December 2004

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           libxml
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux AS/ES/WS 3
                   Red Hat Desktop version 3
                   Red Hat Enterprise Linux AS/ES/WS 2.1
                   Red Hat Linux Advanced Workstation 2.1
Impact:            Execute Arbitrary Code/Commands
Access:            Remote/Unauthenticated
CVE Names:         CAN-2004-0989 CAN-2004-0110

Ref:               ESB-2004.0726

Original Bulletin: https://rhn.redhat.com/errata/RHSA-2004-650.html

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                   Red Hat Security Advisory

Synopsis:          Updated libxml package fixes security vulnerabilities
Advisory ID:       RHSA-2004:650-01
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2004-650.html
Issue date:        2004-12-16
Updated on:        2004-12-16
Product:           Red Hat Enterprise Linux
Cross references:  RHSA_2004:615
CVE Names:         CAN-2004-0110 CAN-2004-0989
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1. Summary:

An updated libxml package that fixes multiple buffer overflows is now
available.

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

3. Problem description:

The libxml package contains a library for manipulating XML files.

Multiple buffer overflow bugs have been found in libxml versions prior to
2.6.14.  If an attacker can trick a user into passing a specially crafted
FTP URL or FTP proxy URL to an application that uses the vulnerable
functions of libxml, it could be possible to execute arbitrary code.  
Additionally, if an attacker can return a specially crafted DNS request to
libxml, it could be possible to execute arbitrary code. The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name
CAN-2004-0989 to this issue.

Yuuichi Teranishi discovered a flaw in libxml versions prior to 2.6.6.
When fetching a remote resource via FTP or HTTP, libxml uses special
parsing routines. These routines can overflow a buffer if passed a very
long URL. If an attacker is able to find an application using libxml that
parses remote resources and allows them to influence the URL, then this
flaw could be used to execute arbitrary code. The Common Vulnerabilities
and Exposures project (cve.mitre.org) has assigned the name CAN-2004-0110
to this issue.

All users are advised to upgrade to this updated package, which contains
backported patches and is not vulnerable to these issues.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.  Use Red Hat
Network to download and update your packages.  To launch the Red Hat
Update Agent, use the following command:

    up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

    http://www.redhat.com/docs/manuals/enterprise/

5. Bug IDs fixed (http://bugzilla.redhat.com/ for more info):

139090 - CAN-2004-0110 multiple buffer overflows (CAN-2004-0989)

6. RPMs required:

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

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/libxml-1.8.14-3.src.rpm
8d1802bcdd2a7085e7158a7ca68ab523  libxml-1.8.14-3.src.rpm

i386:
e2ee01c57caf52c62b1ac9a229fc58f0  libxml-1.8.14-3.i386.rpm
fd04239db40f4c2d9de4cf76791c409e  libxml-devel-1.8.14-3.i386.rpm

ia64:
907f1c8f10e96b6c785d4cb5b7f7c399  libxml-1.8.14-3.ia64.rpm
a9ca532078e6b35f2d01584453a3a6fe  libxml-devel-1.8.14-3.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/libxml-1.8.14-3.src.rpm
8d1802bcdd2a7085e7158a7ca68ab523  libxml-1.8.14-3.src.rpm

ia64:
907f1c8f10e96b6c785d4cb5b7f7c399  libxml-1.8.14-3.ia64.rpm
a9ca532078e6b35f2d01584453a3a6fe  libxml-devel-1.8.14-3.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/libxml-1.8.14-3.src.rpm
8d1802bcdd2a7085e7158a7ca68ab523  libxml-1.8.14-3.src.rpm

i386:
e2ee01c57caf52c62b1ac9a229fc58f0  libxml-1.8.14-3.i386.rpm
fd04239db40f4c2d9de4cf76791c409e  libxml-devel-1.8.14-3.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/libxml-1.8.14-3.src.rpm
8d1802bcdd2a7085e7158a7ca68ab523  libxml-1.8.14-3.src.rpm

i386:
e2ee01c57caf52c62b1ac9a229fc58f0  libxml-1.8.14-3.i386.rpm
fd04239db40f4c2d9de4cf76791c409e  libxml-devel-1.8.14-3.i386.rpm

Red Hat Enterprise Linux AS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/libxml-1.8.17-9.2.src.rpm
0d8ee723cc5bfb46adedf334be96dcbe  libxml-1.8.17-9.2.src.rpm

i386:
1fa0e7d164a4d3d5432732060c67f985  libxml-1.8.17-9.2.i386.rpm
6747de74e075db51e9a40c02ea0905fa  libxml-devel-1.8.17-9.2.i386.rpm

ia64:
6e7730063c22539fb40658cc763a2bd3  libxml-1.8.17-9.2.ia64.rpm
594c3955d725c7aad2c3ad89194d0f4b  libxml-devel-1.8.17-9.2.ia64.rpm

ppc:
e04cb28f14a0381a7d92aa9b57b3b43a  libxml-1.8.17-9.2.ppc.rpm
b52b8e7f667842bbcb319e0c5cb9132e  libxml-devel-1.8.17-9.2.ppc.rpm

s390:
f8cb54901760145e5123832d27bf7334  libxml-1.8.17-9.2.s390.rpm
88ace5024d54b0f7a104bb6310974fd6  libxml-devel-1.8.17-9.2.s390.rpm

s390x:
7d268017ddac87e213b1b9e0d22be27b  libxml-1.8.17-9.2.s390x.rpm
eda80205b0afd05ca6aafce032a1072f  libxml-devel-1.8.17-9.2.s390x.rpm

x86_64:
140e93f6366ba860a6301629bfe71c08  libxml-1.8.17-9.2.x86_64.rpm
c3e4b6e36068b0a2ecfbe75491f2b967  libxml-devel-1.8.17-9.2.x86_64.rpm

Red Hat Desktop version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/libxml-1.8.17-9.2.src.rpm
0d8ee723cc5bfb46adedf334be96dcbe  libxml-1.8.17-9.2.src.rpm

i386:
1fa0e7d164a4d3d5432732060c67f985  libxml-1.8.17-9.2.i386.rpm
6747de74e075db51e9a40c02ea0905fa  libxml-devel-1.8.17-9.2.i386.rpm

x86_64:
140e93f6366ba860a6301629bfe71c08  libxml-1.8.17-9.2.x86_64.rpm
c3e4b6e36068b0a2ecfbe75491f2b967  libxml-devel-1.8.17-9.2.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/libxml-1.8.17-9.2.src.rpm
0d8ee723cc5bfb46adedf334be96dcbe  libxml-1.8.17-9.2.src.rpm

i386:
1fa0e7d164a4d3d5432732060c67f985  libxml-1.8.17-9.2.i386.rpm
6747de74e075db51e9a40c02ea0905fa  libxml-devel-1.8.17-9.2.i386.rpm

ia64:
6e7730063c22539fb40658cc763a2bd3  libxml-1.8.17-9.2.ia64.rpm
594c3955d725c7aad2c3ad89194d0f4b  libxml-devel-1.8.17-9.2.ia64.rpm

x86_64:
140e93f6366ba860a6301629bfe71c08  libxml-1.8.17-9.2.x86_64.rpm
c3e4b6e36068b0a2ecfbe75491f2b967  libxml-devel-1.8.17-9.2.x86_64.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/libxml-1.8.17-9.2.src.rpm
0d8ee723cc5bfb46adedf334be96dcbe  libxml-1.8.17-9.2.src.rpm

i386:
1fa0e7d164a4d3d5432732060c67f985  libxml-1.8.17-9.2.i386.rpm
6747de74e075db51e9a40c02ea0905fa  libxml-devel-1.8.17-9.2.i386.rpm

ia64:
6e7730063c22539fb40658cc763a2bd3  libxml-1.8.17-9.2.ia64.rpm
594c3955d725c7aad2c3ad89194d0f4b  libxml-devel-1.8.17-9.2.ia64.rpm

x86_64:
140e93f6366ba860a6301629bfe71c08  libxml-1.8.17-9.2.x86_64.rpm
c3e4b6e36068b0a2ecfbe75491f2b967  libxml-devel-1.8.17-9.2.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.html#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0110
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0989

8. Contact:

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

Copyright 2004 Red Hat, Inc.
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