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Category:   Application (E-mail Server)  >   Mailman Vendors:   Red Hat
(Red Hat Issues Fix for Red Hat 7.2, 7.3) Mailman E-mail Discussion List Software Allows Remote Users to Conduct Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1004503
SecurityTracker URL:  http://securitytracker.com/id/1004503
CVE Reference:   CVE-2002-0388   (Links to External Site)
Date:  Jun 10 2002
Impact:   Disclosure of authentication information, Execution of arbitrary code via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.0.10 and prior versions
Description:   Two cross-site scripting vulnerabilities were reported in Mailman. A remote user could potentially obtain a Mailman user's authentication cookies or take actions acting as that Mailman user.

The vendor reported that there are two cross-site scripting bugs.

One bug is in the administrator login page (with source code in Utils.py). A remote user could create an HTML link referring to that page that, when loaded by a target (victim) user, would cause arbitrary scripting to be executed by the target user's browser. The code could obtain the target user's cookies associated with the site running Mailman.

The other bug is in the Pipermail archiving component of Mailman (with source code in Archiver/HyperArch.py). A remote user can create an e-mail message with encoded scripting in the 'Subject' or 'From' fields in a manner that, when it is archived and indexed by Pipermail and then a target user views the index summary, arbitrary code may be executed by the target user's browser. The code could obtain the target user's cookies associated with the site running Pipermail.

The vendor credits "office" and Tristan Roddis with reporting these flaws.

Impact:   A remote user could create an HTML link that, when loaded by the target user, would cause arbitrary scripting code to be executed by the target user's browser. A remote user could also create an e-mail message to be archived by Pipermail (the Mailman archive component) so that, when a target user views the Pipermail index summaries that include a reference to the mailcious e-mail message, arbitrary scripting code would be executed by the target user's browser.

In both cases, the code would originate or appear to originate from the server running Mailman and would execute in the security context of that site. As a result, the code would be able to access the target user's cookies associated with that site and may be able to take actions acting as the target user.

Solution:   Red Hat has released a fix for Red Hat Linux 7.2 and 7.3.

Red Hat Linux 7.2:

SRPMS:
ftp://updates.redhat.com/7.2/en/os/SRPMS/mailman-2.0.11-1.src.rpm

i386:
ftp://updates.redhat.com/7.2/en/os/i386/mailman-2.0.11-1.i386.rpm

ia64:
ftp://updates.redhat.com/7.2/en/os/ia64/mailman-2.0.11-1.ia64.rpm

Red Hat Linux 7.3:

SRPMS:
ftp://updates.redhat.com/7.3/en/os/SRPMS/mailman-2.0.11-1.src.rpm

i386:
ftp://updates.redhat.com/7.3/en/os/i386/mailman-2.0.11-1.i386.rpm

The verification checksums are:

MD5 sum Package Name

7db04994cd5991394169a4c2912d2cbf 7.2/en/os/SRPMS/mailman-2.0.11-1.src.rpm
0a9d6a08bce636c1903499a762aeb8cf 7.2/en/os/i386/mailman-2.0.11-1.i386.rpm
cd23893106d0a3f4e4fd18bbe758c158 7.2/en/os/ia64/mailman-2.0.11-1.ia64.rpm
7db04994cd5991394169a4c2912d2cbf 7.3/en/os/SRPMS/mailman-2.0.11-1.src.rpm
0a9d6a08bce636c1903499a762aeb8cf 7.3/en/os/i386/mailman-2.0.11-1.i386.rpm

See the Source Message for the vendor's advisory containing directions on how to apply the appropriate fix.

Vendor URL:  www.gnu.org/software/mailman/mailman.html (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Red Hat Linux)
Underlying OS Comments:  7.2, 7.3

Message History:   This archive entry is a follow-up to the message listed below.
May 25 2002 Mailman E-mail Discussion List Software Allows Remote Users to Conduct Cross-Site Scripting Attacks



 Source Message Contents

Subject:  [RHSA-2002:099-04] Updated mailman packages available


---------------------------------------------------------------------
                   Red Hat, Inc. Red Hat Security Advisory

Synopsis:          Updated mailman packages available
Advisory ID:       RHSA-2002:099-04
Issue date:        2002-05-22
Updated on:        2002-06-06
Product:           Red Hat Linux
Keywords:          mailman cross-site scripting
Cross references:  RHSA-2002:100 RHSA-2002:101
Obsoletes:         
CVE Names:         CAN-2002-0388
---------------------------------------------------------------------

1. Topic:

Updated mailman packages are now available for Red Hat Linux 7.2 and 7.3. 
These updates resolve a cross-site scripting vulnerability present in
versions of Mailman prior to 2.0.11.

2. Relevant releases/architectures:

Red Hat Linux 7.2 - i386, ia64

Red Hat Linux 7.3 - i386

3. Problem description:

Two cross-site scripting vulnerabilities have been discovered in versions
of Mailman prior to version 2.0.11.

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.

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



6. RPMs required:

Red Hat Linux 7.2:

SRPMS:
ftp://updates.redhat.com/7.2/en/os/SRPMS/mailman-2.0.11-1.src.rpm

i386:
ftp://updates.redhat.com/7.2/en/os/i386/mailman-2.0.11-1.i386.rpm

ia64:
ftp://updates.redhat.com/7.2/en/os/ia64/mailman-2.0.11-1.ia64.rpm

Red Hat Linux 7.3:

SRPMS:
ftp://updates.redhat.com/7.3/en/os/SRPMS/mailman-2.0.11-1.src.rpm

i386:
ftp://updates.redhat.com/7.3/en/os/i386/mailman-2.0.11-1.i386.rpm



7. Verification:

MD5 sum                          Package Name
--------------------------------------------------------------------------
7db04994cd5991394169a4c2912d2cbf 7.2/en/os/SRPMS/mailman-2.0.11-1.src.rpm
0a9d6a08bce636c1903499a762aeb8cf 7.2/en/os/i386/mailman-2.0.11-1.i386.rpm
cd23893106d0a3f4e4fd18bbe758c158 7.2/en/os/ia64/mailman-2.0.11-1.ia64.rpm
7db04994cd5991394169a4c2912d2cbf 7.3/en/os/SRPMS/mailman-2.0.11-1.src.rpm
0a9d6a08bce636c1903499a762aeb8cf 7.3/en/os/i386/mailman-2.0.11-1.i386.rpm
 

These packages are GPG signed by Red Hat, Inc. for security.  Our key
is available at:
    http://www.redhat.com/about/contact/pgpkey.html

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

8. References:

http://mail.python.org/pipermail/mailman-announce/2002-May/000042.html
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0388



Copyright(c) 2000, 2001, 2002 Red Hat, Inc.



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