-----BEGIN PGP SIGNED MESSAGE-----

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

                     ESB-2004.0132 -- RHSA-2004:047-01
            Updated PWLib packages fix protocol security issues
                             20 February 2004

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

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

Product:                PWLib
Publisher:              Red Hat
Operating System:       Red Hat Enterprise Linux AS version 3
                        Red Hat Enterprise Linux ES version 3
                        Red Hat Enterprise Linux WS version 3
Impact:                 Denial of Service
                        Execute Arbitrary Code/Commands
Access Required:        Remote
CVE Names:              CAN-2004-0097

Ref:                    ESB-2004.0127
                        ESB-2004.0029

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

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

- - ---------------------------------------------------------------------
                   Red Hat Security Advisory

Synopsis:          Updated PWLib packages fix protocol security issues
Advisory ID:       RHSA-2004:047-01
Issue date:        2004-02-18
Updated on:        2004-02-18
Product:           Red Hat Enterprise Linux
Keywords:          h323 h225
Cross references:  
Obsoletes:         
CVE Names:         CAN-2004-0097
- - ---------------------------------------------------------------------

1. Topic:

Updated PWLib packages that contain fixes for security issues found during
protocol testing by the NISCC are now available.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux ES version 3 - i386
Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64

3. Problem description:

PWLib is a cross-platform class library designed to support the OpenH323
project.  OpenH323 provides an implementation of the ITU H.323
teleconferencing protocol, used by packages such as Gnome Meeting.

A test suite for the H.225 protocol (part of the H.323 family) provided by
the NISCC uncovered bugs in PWLib prior to version 1.6.0.  An attacker
could trigger these bugs by sending carefully crafted messages to an
application.  The effects of such an attack can vary depending on the
application, but would usually result in a Denial of Service.  The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name
CAN-2004-0097 to this issue.

Users are advised to upgrade to the erratum packages, which contain
backported security fixes and are not vulnerable to these issues.

Red Hat would like to thank Craig Southeren of the OpenH323 project for
providing the fixes for these issues.

4. Solution:

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

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade.  Only those
RPMs which are currently installed will be updated.  Those RPMs which are
not installed but included in the list will not be updated.  Note that you
can also use wildcards (*.rpm) if your current directory *only* contains the
desired RPMs.

Please note that this update is also available via Red Hat Network.  Many
people find this an easier way to apply updates.  To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

If up2date fails to connect to Red Hat Network due to SSL
Certificate Errors, you need to install a version of the
up2date client with an updated certificate.  The latest version of
up2date is available from the Red Hat FTP site and may also be
downloaded directly from the RHN website:

https://rhn.redhat.com/help/latest-up2date.pxt

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

114308 - CAN-2004-0097 PWlib/OpenH323 vulnerabilities

6. RPMs required:

Red Hat Enterprise Linux AS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/pwlib-1.4.7-7.EL.src.rpm

i386:
Available from Red Hat Network: pwlib-1.4.7-7.EL.i386.rpm

ia64:
Available from Red Hat Network: pwlib-1.4.7-7.EL.ia64.rpm

ppc:
Available from Red Hat Network: pwlib-1.4.7-7.EL.ppc.rpm

s390:
Available from Red Hat Network: pwlib-1.4.7-7.EL.s390.rpm

s390x:
Available from Red Hat Network: pwlib-1.4.7-7.EL.s390x.rpm

x86_64:
Available from Red Hat Network: pwlib-1.4.7-7.EL.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/pwlib-1.4.7-7.EL.src.rpm

i386:
Available from Red Hat Network: pwlib-1.4.7-7.EL.i386.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/pwlib-1.4.7-7.EL.src.rpm

i386:
Available from Red Hat Network: pwlib-1.4.7-7.EL.i386.rpm

ia64:
Available from Red Hat Network: pwlib-1.4.7-7.EL.ia64.rpm

x86_64:
Available from Red Hat Network: pwlib-1.4.7-7.EL.x86_64.rpm



7. Verification:

MD5 sum                          Package Name
- - --------------------------------------------------------------------------

26ea22009305d3f464487f6fd249ffb4 3AS/en/os/SRPMS/pwlib-1.4.7-7.EL.src.rpm
ed2a1830fdd4cf9305ad9290d8f0a6ab 3AS/en/os/i386/pwlib-1.4.7-7.EL.i386.rpm
d6612f085ecaff1698a381bfd516e865 3AS/en/os/ia64/pwlib-1.4.7-7.EL.ia64.rpm
64e7a3c71712398a3a985a9210e1a21e 3AS/en/os/ppc/pwlib-1.4.7-7.EL.ppc.rpm
7acdeae69d904f5a577067cf5ff84bc5 3AS/en/os/s390/pwlib-1.4.7-7.EL.s390.rpm
5cd2cdb237e95a9286a964504e62efe3 3AS/en/os/s390x/pwlib-1.4.7-7.EL.s390x.rpm
637821e019bb587740e50e5d9ddabac6 3AS/en/os/x86_64/pwlib-1.4.7-7.EL.x86_64.rpm
26ea22009305d3f464487f6fd249ffb4 3ES/en/os/SRPMS/pwlib-1.4.7-7.EL.src.rpm
ed2a1830fdd4cf9305ad9290d8f0a6ab 3ES/en/os/i386/pwlib-1.4.7-7.EL.i386.rpm
26ea22009305d3f464487f6fd249ffb4 3WS/en/os/SRPMS/pwlib-1.4.7-7.EL.src.rpm
ed2a1830fdd4cf9305ad9290d8f0a6ab 3WS/en/os/i386/pwlib-1.4.7-7.EL.i386.rpm
d6612f085ecaff1698a381bfd516e865 3WS/en/os/ia64/pwlib-1.4.7-7.EL.ia64.rpm
637821e019bb587740e50e5d9ddabac6 3WS/en/os/x86_64/pwlib-1.4.7-7.EL.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key is
available from https://www.redhat.com/security/keys.html

You can verify each package with the following command:
    
    rpm --checksig -v <filename>

If you only wish to verify that each package has not been corrupted or
tampered with, examine only the md5sum with the following command:
    
    md5sum <filename>


8. References:

http://www.uniras.gov.uk/vuls/2004/006489/h323.htm
http://www.postincrement.com/openh323/nissc_vulnerabilty.html
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0097

9. Contact:

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

Copyright 2003 Red Hat, Inc.
- -----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.7 (GNU/Linux)

iD8DBQFAMz9OXlSAg2UNWIIRAptrAJ49c79y+/zwfUiVPDwdiaVqfeB13gCgtI7v
gkRzevQlhBAYjzmDFNlQxJs=
=6Icd
- -----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.

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

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

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

iQCVAwUBQDVeCyh9+71yA2DNAQHA2gP+LkD44AhXpsVyw0WML2poP+UEgYg754ik
OfhG3IBGyXyHpnem0ftX8iuEbZcI1e1srJltUxW9jtG0UIpvysFUHzUQVLVKnRtZ
8rC1d7lTxsIvuvioycoQ2b8mHzzS7XneW3l/cXLQnPGKG+L2pe33MTAckmShiLVp
qpu6eFVPCRY=
=SvNe
-----END PGP SIGNATURE-----