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                   Red Hat Security Advisory

Synopsis:          Updated Pan packages fix denial of service vulnerability
Advisory ID:       RHSA-2003:312-01
Issue date:        2003-12-10
Updated on:        2003-12-10
Product:           Red Hat Enterprise Linux
Keywords:          DoS
Cross references:  
Obsoletes:         
CVE Names:         CAN-2003-0855
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1. Topic:

Updated Pan packages that close a denial of service vulnerability are 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

3. Problem description:

Pan is a Gnome/GTK+ newsreader.

A bug in Pan versions prior to 0.13.4 can cause Pan to crash when parsing
an article header containing a very long author email address.  This bug
causes a denial of service (crash), but cannot be exploited further.  The
Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CAN-2003-0855 to this issue.

Users of Pan are advised to upgrade to these erratum packages, which
contain a backported patch correcting this issue.

Red Hat would like to thank Kasper Dupont for alerting us to this issue and
to Charles Kerr for providing the patch.

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):

108189 - CAN-2003-0855 Pan crash on long email address

6. RPMs required:

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

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/pan-0.9.7-3.src.rpm

i386:
Available from Red Hat Network: pan-0.9.7-3.i386.rpm

ia64:
Available from Red Hat Network: pan-0.9.7-3.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/pan-0.9.7-3.src.rpm

ia64:
Available from Red Hat Network: pan-0.9.7-3.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/pan-0.9.7-3.src.rpm

i386:
Available from Red Hat Network: pan-0.9.7-3.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/pan-0.9.7-3.src.rpm

i386:
Available from Red Hat Network: pan-0.9.7-3.i386.rpm



7. Verification:

MD5 sum                          Package Name
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f43279cf15870b38a23228afb9c2299f 2.1AS/en/os/SRPMS/pan-0.9.7-3.src.rpm
d32f1285822ba96eee66102f9cedbc57 2.1AS/en/os/i386/pan-0.9.7-3.i386.rpm
1033c5be1c4aa5d8faafad7e05d1a512 2.1AS/en/os/ia64/pan-0.9.7-3.ia64.rpm
f43279cf15870b38a23228afb9c2299f 2.1AW/en/os/SRPMS/pan-0.9.7-3.src.rpm
1033c5be1c4aa5d8faafad7e05d1a512 2.1AW/en/os/ia64/pan-0.9.7-3.ia64.rpm
f43279cf15870b38a23228afb9c2299f 2.1ES/en/os/SRPMS/pan-0.9.7-3.src.rpm
d32f1285822ba96eee66102f9cedbc57 2.1ES/en/os/i386/pan-0.9.7-3.i386.rpm
f43279cf15870b38a23228afb9c2299f 2.1WS/en/os/SRPMS/pan-0.9.7-3.src.rpm
d32f1285822ba96eee66102f9cedbc57 2.1WS/en/os/i386/pan-0.9.7-3.i386.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://bugzilla.gnome.org/show_bug.cgi?id=107025
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0855

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.
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