copyright | disclaimer | privacy | contact  
Australia's Leading Computer Emergency Response Team
 
Search this site

 
On this site

 > HOME
 > About AusCERT
 > Membership
 > Contact Us
 > PKI Services
 > Publications
 > Sec. Bulletins
 > Conferences
 > News & Media
 > Services
 > Web Log
 > Site Map
 > Site Help
 > Member login





 

ESB-2012.0365 - [RedHat] tomcat5 & tomcat6: Denial of service - Remote/unauthenticated

Date: 12 April 2012
References: ESB-2012.0067  ESB-2012.0073  ESB-2012.0102  ESB-2012.0103  ESB-2012.0122  ESB-2012.0216  ESB-2012.0239  ESB-2012.0299  ESB-2012.0488  

Click here for printable version
Click here for PGP verifiable version
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2012.0365
              Moderate: tomcat5 and tomcat6 security updates
                               12 April 2012

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

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

Product:           tomcat5
                   tomcat6
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux Server 5
                   Red Hat Enterprise Linux WS/Desktop 5
                   Red Hat Enterprise Linux Server 6
                   Red Hat Enterprise Linux WS/Desktop 6
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2012-0022 CVE-2011-4858 

Reference:         ESB-2012.0299
                   ESB-2012.0239
                   ESB-2012.0216
                   ESB-2012.0122
                   ESB-2012.0103
                   ESB-2012.0102
                   ESB-2012.0073
                   ESB-2012.0067

Original Bulletin: 
   https://rhn.redhat.com/errata/RHSA-2012-0474.html
   https://rhn.redhat.com/errata/RHSA-2012-0475.html

Comment: This bulletin contains two (2) Red Hat security advisories.

- --------------------------BEGIN INCLUDED TEXT--------------------

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

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

Synopsis:          Moderate: tomcat5 security update
Advisory ID:       RHSA-2012:0474-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2012-0474.html
Issue date:        2012-04-11
CVE Names:         CVE-2011-4858 CVE-2012-0022 
=====================================================================

1. Summary:

Updated tomcat5 packages that fix two security issues are now available for
Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having moderate
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links in the References section.

2. Relevant releases/architectures:

RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

3. Description:

Apache Tomcat is a servlet container for the Java Servlet and JavaServer
Pages (JSP) technologies.

It was found that the Java hashCode() method implementation was susceptible
to predictable hash collisions. A remote attacker could use this flaw to
cause Tomcat to use an excessive amount of CPU time by sending an HTTP
request with a large number of parameters whose names map to the same hash
value. This update introduces a limit on the number of parameters processed
per request to mitigate this issue. The default limit is 512 for
parameters and 128 for headers. These defaults can be changed by setting
the org.apache.tomcat.util.http.Parameters.MAX_COUNT and
org.apache.tomcat.util.http.MimeHeaders.MAX_COUNT system properties.
(CVE-2011-4858)

It was found that Tomcat did not handle large numbers of parameters and
large parameter values efficiently. A remote attacker could make Tomcat
use an excessive amount of CPU time by sending an HTTP request containing a
large number of parameters or large parameter values. This update
introduces limits on the number of parameters and headers processed per
request to address this issue. Refer to the CVE-2011-4858 description for
information about the org.apache.tomcat.util.http.Parameters.MAX_COUNT and
org.apache.tomcat.util.http.MimeHeaders.MAX_COUNT system properties.
(CVE-2012-0022) 

Red Hat would like to thank oCERT for reporting CVE-2011-4858. oCERT
acknowledges Julian Wälde and Alexander Klink as the original reporters of
CVE-2011-4858.

Users of Tomcat should upgrade to these updated packages, which correct
these issues. Tomcat must be restarted for this update to take effect.

4. Solution:

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

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259

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

750521 - CVE-2011-4858 tomcat: hash table collisions CPU usage DoS (oCERT-2011-003)
783359 - CVE-2012-0022 tomcat: large number of parameters DoS

6. Package List:

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/tomcat5-5.5.23-0jpp.31.el5_8.src.rpm

i386:
tomcat5-debuginfo-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-jsp-2.0-api-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-servlet-2.4-api-5.5.23-0jpp.31.el5_8.i386.rpm

x86_64:
tomcat5-debuginfo-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-jsp-2.0-api-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-servlet-2.4-api-5.5.23-0jpp.31.el5_8.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/tomcat5-5.5.23-0jpp.31.el5_8.src.rpm

i386:
tomcat5-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-admin-webapps-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-common-lib-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-debuginfo-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-jasper-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-jasper-javadoc-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-jsp-2.0-api-javadoc-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-server-lib-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-servlet-2.4-api-javadoc-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-webapps-5.5.23-0jpp.31.el5_8.i386.rpm

x86_64:
tomcat5-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-admin-webapps-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-common-lib-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-debuginfo-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-jasper-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-jasper-javadoc-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-jsp-2.0-api-javadoc-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-server-lib-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-servlet-2.4-api-javadoc-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-webapps-5.5.23-0jpp.31.el5_8.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/tomcat5-5.5.23-0jpp.31.el5_8.src.rpm

i386:
tomcat5-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-admin-webapps-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-common-lib-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-debuginfo-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-jasper-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-jasper-javadoc-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-jsp-2.0-api-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-jsp-2.0-api-javadoc-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-server-lib-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-servlet-2.4-api-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-servlet-2.4-api-javadoc-5.5.23-0jpp.31.el5_8.i386.rpm
tomcat5-webapps-5.5.23-0jpp.31.el5_8.i386.rpm

ia64:
tomcat5-5.5.23-0jpp.31.el5_8.ia64.rpm
tomcat5-admin-webapps-5.5.23-0jpp.31.el5_8.ia64.rpm
tomcat5-common-lib-5.5.23-0jpp.31.el5_8.ia64.rpm
tomcat5-debuginfo-5.5.23-0jpp.31.el5_8.ia64.rpm
tomcat5-jasper-5.5.23-0jpp.31.el5_8.ia64.rpm
tomcat5-jasper-javadoc-5.5.23-0jpp.31.el5_8.ia64.rpm
tomcat5-jsp-2.0-api-5.5.23-0jpp.31.el5_8.ia64.rpm
tomcat5-jsp-2.0-api-javadoc-5.5.23-0jpp.31.el5_8.ia64.rpm
tomcat5-server-lib-5.5.23-0jpp.31.el5_8.ia64.rpm
tomcat5-servlet-2.4-api-5.5.23-0jpp.31.el5_8.ia64.rpm
tomcat5-servlet-2.4-api-javadoc-5.5.23-0jpp.31.el5_8.ia64.rpm
tomcat5-webapps-5.5.23-0jpp.31.el5_8.ia64.rpm

ppc:
tomcat5-5.5.23-0jpp.31.el5_8.ppc.rpm
tomcat5-5.5.23-0jpp.31.el5_8.ppc64.rpm
tomcat5-admin-webapps-5.5.23-0jpp.31.el5_8.ppc.rpm
tomcat5-common-lib-5.5.23-0jpp.31.el5_8.ppc.rpm
tomcat5-debuginfo-5.5.23-0jpp.31.el5_8.ppc.rpm
tomcat5-debuginfo-5.5.23-0jpp.31.el5_8.ppc64.rpm
tomcat5-jasper-5.5.23-0jpp.31.el5_8.ppc.rpm
tomcat5-jasper-javadoc-5.5.23-0jpp.31.el5_8.ppc.rpm
tomcat5-jsp-2.0-api-5.5.23-0jpp.31.el5_8.ppc.rpm
tomcat5-jsp-2.0-api-javadoc-5.5.23-0jpp.31.el5_8.ppc.rpm
tomcat5-server-lib-5.5.23-0jpp.31.el5_8.ppc.rpm
tomcat5-servlet-2.4-api-5.5.23-0jpp.31.el5_8.ppc.rpm
tomcat5-servlet-2.4-api-javadoc-5.5.23-0jpp.31.el5_8.ppc.rpm
tomcat5-webapps-5.5.23-0jpp.31.el5_8.ppc.rpm

s390x:
tomcat5-5.5.23-0jpp.31.el5_8.s390x.rpm
tomcat5-admin-webapps-5.5.23-0jpp.31.el5_8.s390x.rpm
tomcat5-common-lib-5.5.23-0jpp.31.el5_8.s390x.rpm
tomcat5-debuginfo-5.5.23-0jpp.31.el5_8.s390x.rpm
tomcat5-jasper-5.5.23-0jpp.31.el5_8.s390x.rpm
tomcat5-jasper-javadoc-5.5.23-0jpp.31.el5_8.s390x.rpm
tomcat5-jsp-2.0-api-5.5.23-0jpp.31.el5_8.s390x.rpm
tomcat5-jsp-2.0-api-javadoc-5.5.23-0jpp.31.el5_8.s390x.rpm
tomcat5-server-lib-5.5.23-0jpp.31.el5_8.s390x.rpm
tomcat5-servlet-2.4-api-5.5.23-0jpp.31.el5_8.s390x.rpm
tomcat5-servlet-2.4-api-javadoc-5.5.23-0jpp.31.el5_8.s390x.rpm
tomcat5-webapps-5.5.23-0jpp.31.el5_8.s390x.rpm

x86_64:
tomcat5-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-admin-webapps-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-common-lib-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-debuginfo-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-jasper-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-jasper-javadoc-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-jsp-2.0-api-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-jsp-2.0-api-javadoc-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-server-lib-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-servlet-2.4-api-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-servlet-2.4-api-javadoc-5.5.23-0jpp.31.el5_8.x86_64.rpm
tomcat5-webapps-5.5.23-0jpp.31.el5_8.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://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2011-4858.html
https://www.redhat.com/security/data/cve/CVE-2012-0022.html
https://access.redhat.com/security/updates/classification/#moderate
http://tomcat.apache.org/security-5.html

8. Contact:

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

Copyright 2012 Red Hat, Inc.
- -----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.4 (GNU/Linux)

iD8DBQFPhctDXlSAg2UNWIIRAnmwAKCG8ANIA6BMLPlUE4o+l6DV8EXkOgCgopJx
Iouhu7nObQ+2gvPAV+Vvp7o=
=WA/1
- -----END PGP SIGNATURE-----


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

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

Synopsis:          Moderate: tomcat6 security update
Advisory ID:       RHSA-2012:0475-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2012-0475.html
Issue date:        2012-04-11
CVE Names:         CVE-2011-4858 CVE-2012-0022 
=====================================================================

1. Summary:

Updated tomcat6 packages that fix two security issues are now available for
Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop Optional (v. 6) - noarch
Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch
Red Hat Enterprise Linux Server (v. 6) - noarch
Red Hat Enterprise Linux Server Optional (v. 6) - noarch
Red Hat Enterprise Linux Workstation (v. 6) - noarch
Red Hat Enterprise Linux Workstation Optional (v. 6) - noarch

3. Description:

Apache Tomcat is a servlet container for the Java Servlet and JavaServer
Pages (JSP) technologies.

It was found that the Java hashCode() method implementation was susceptible
to predictable hash collisions. A remote attacker could use this flaw to
cause Tomcat to use an excessive amount of CPU time by sending an HTTP
request with a large number of parameters whose names map to the same hash
value. This update introduces a limit on the number of parameters processed
per request to mitigate this issue. The default limit is 512 for
parameters and 128 for headers. These defaults can be changed by setting
the org.apache.tomcat.util.http.Parameters.MAX_COUNT and
org.apache.tomcat.util.http.MimeHeaders.MAX_COUNT system properties.
(CVE-2011-4858)

It was found that Tomcat did not handle large numbers of parameters and
large parameter values efficiently. A remote attacker could make Tomcat
use an excessive amount of CPU time by sending an HTTP request containing a
large number of parameters or large parameter values. This update
introduces limits on the number of parameters and headers processed per
request to address this issue. Refer to the CVE-2011-4858 description for
information about the org.apache.tomcat.util.http.Parameters.MAX_COUNT and
org.apache.tomcat.util.http.MimeHeaders.MAX_COUNT system properties.
(CVE-2012-0022) 

Red Hat would like to thank oCERT for reporting CVE-2011-4858. oCERT
acknowledges Julian Wälde and Alexander Klink as the original reporters of
CVE-2011-4858.

Users of Tomcat should upgrade to these updated packages, which correct
these issues. Tomcat must be restarted for this update to take effect.

4. Solution:

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

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259

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

750521 - CVE-2011-4858 tomcat: hash table collisions CPU usage DoS (oCERT-2011-003)
783359 - CVE-2012-0022 tomcat: large number of parameters DoS

6. Package List:

Red Hat Enterprise Linux Desktop Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/tomcat6-6.0.24-36.el6_2.src.rpm

noarch:
tomcat6-6.0.24-36.el6_2.noarch.rpm
tomcat6-admin-webapps-6.0.24-36.el6_2.noarch.rpm
tomcat6-docs-webapp-6.0.24-36.el6_2.noarch.rpm
tomcat6-el-2.1-api-6.0.24-36.el6_2.noarch.rpm
tomcat6-javadoc-6.0.24-36.el6_2.noarch.rpm
tomcat6-jsp-2.1-api-6.0.24-36.el6_2.noarch.rpm
tomcat6-lib-6.0.24-36.el6_2.noarch.rpm
tomcat6-servlet-2.5-api-6.0.24-36.el6_2.noarch.rpm
tomcat6-webapps-6.0.24-36.el6_2.noarch.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/tomcat6-6.0.24-36.el6_2.src.rpm

noarch:
tomcat6-6.0.24-36.el6_2.noarch.rpm
tomcat6-admin-webapps-6.0.24-36.el6_2.noarch.rpm
tomcat6-docs-webapp-6.0.24-36.el6_2.noarch.rpm
tomcat6-el-2.1-api-6.0.24-36.el6_2.noarch.rpm
tomcat6-javadoc-6.0.24-36.el6_2.noarch.rpm
tomcat6-jsp-2.1-api-6.0.24-36.el6_2.noarch.rpm
tomcat6-lib-6.0.24-36.el6_2.noarch.rpm
tomcat6-servlet-2.5-api-6.0.24-36.el6_2.noarch.rpm
tomcat6-webapps-6.0.24-36.el6_2.noarch.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/tomcat6-6.0.24-36.el6_2.src.rpm

noarch:
tomcat6-6.0.24-36.el6_2.noarch.rpm
tomcat6-el-2.1-api-6.0.24-36.el6_2.noarch.rpm
tomcat6-jsp-2.1-api-6.0.24-36.el6_2.noarch.rpm
tomcat6-lib-6.0.24-36.el6_2.noarch.rpm
tomcat6-servlet-2.5-api-6.0.24-36.el6_2.noarch.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/tomcat6-6.0.24-36.el6_2.src.rpm

noarch:
tomcat6-admin-webapps-6.0.24-36.el6_2.noarch.rpm
tomcat6-docs-webapp-6.0.24-36.el6_2.noarch.rpm
tomcat6-javadoc-6.0.24-36.el6_2.noarch.rpm
tomcat6-webapps-6.0.24-36.el6_2.noarch.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/tomcat6-6.0.24-36.el6_2.src.rpm

noarch:
tomcat6-6.0.24-36.el6_2.noarch.rpm
tomcat6-el-2.1-api-6.0.24-36.el6_2.noarch.rpm
tomcat6-jsp-2.1-api-6.0.24-36.el6_2.noarch.rpm
tomcat6-lib-6.0.24-36.el6_2.noarch.rpm
tomcat6-servlet-2.5-api-6.0.24-36.el6_2.noarch.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/tomcat6-6.0.24-36.el6_2.src.rpm

noarch:
tomcat6-admin-webapps-6.0.24-36.el6_2.noarch.rpm
tomcat6-docs-webapp-6.0.24-36.el6_2.noarch.rpm
tomcat6-javadoc-6.0.24-36.el6_2.noarch.rpm
tomcat6-webapps-6.0.24-36.el6_2.noarch.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://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2011-4858.html
https://www.redhat.com/security/data/cve/CVE-2012-0022.html
https://access.redhat.com/security/updates/classification/#moderate
http://tomcat.apache.org/security-6.html

8. Contact:

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

Copyright 2012 Red Hat, Inc.
- -----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.4 (GNU/Linux)

iD8DBQFPhcuMXlSAg2UNWIIRAmgcAKCvoGLuPZCqAHY7u1xm60u7il7bEACfQGBI
8HSOguJdUvIJBrIr8kyWHpc=
=1ReJ
- -----END PGP SIGNATURE-----

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        http://www.auscert.org.au/render.html?cid=1980

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967

iQIVAwUBT4Yx3O4yVqjM2NGpAQLW+g/9EljWgVfooqsQK+mtOHItf2UeYIC6d60V
j6BJHm1aO/clrJ8liqtuTEk/869t64TUtf9vzPcO91YgKIcjyxV5D9t1QZbSSh8W
M61z3FYQGc7gM0ISyaPQHSbDmcoB1T58Kklf6EC9bLgvclZCxbs470TiSfmOFBy8
BpcEGQpHxdpP+9I17FyDKeOt8TQqdxfaNB/A0u9hHD0zrkEVfX56gMdUZ30vfZcN
BucR3wDdV/p6TjjTw+abUqbFDAByCTQK8PGhjjH23uPci4rU3w8cQELHlGp1+HnV
VQBbVJhU2k9RVxPvB0eqUnfNmM7m8Ud+SgayNZaA3q46E5QJEyw0iQFCyiVkise7
V9Py1r3ECYZtGPZEbMDtPZYZy3xX6fLgwCCe+N5U64gPNZBWZkAVqvMwEDK24sAN
FdgfiQQfTPPlY954n6+LDfyJaVKe1FE2kNNxuYETuzQGxWB1rVTnzIp8tYCgSYMe
5wTdXKJCUKmgpYfBGC4GxHunJdD/xZqRmI1hYlvAZxWqiIHLZI7993h80r4l9Nqk
mVOrtsHk+MLNnl56ZIsHgKz4zxq2GWr1Pl0InVc1m5b19PccFP75nUQz7LNJqYJX
TkauoJ/R0iJKoeKUpExH4O5BuqPegxvgqzKdLeEEDZ5IHvGZ/tIJXWzu0ubXF2du
9nTM2Tsjltg=
=Bf6D
-----END PGP SIGNATURE-----