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Category:   Application (E-mail Server)  >   Mailman Vendors:   Debian
(Debian Issues Revised Fix) Mailman E-mail Discussion List Software Allows Remote Users to Conduct Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1005141
SecurityTracker URL:  http://securitytracker.com/id/1005141
CVE Reference:   CAN-2002-0388   (Links to External Site)
Date:  Aug 27 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:   Debian has released a revised fix that will ensure that Python is upgraded from 1.5 to 2.1. The mailman security update reportedly introduced a dependency to Python 2.1, both in the security update and upstream, which left the package unusable on some systems.

This problem has been fixed in version 2.0.11-1woody4 for the current stable distribution (woody). Others are not affected.

Debian GNU/Linux 3.0 alias woody:

Source archives:

http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4.dsc
Size/MD5 checksum: 595 b154928ff9853f95ea301c452f23605d
http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4.diff.gz
Size/MD5 checksum: 31005 08c23b520ae4b9f4e7ef45b465ad7e47
http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11.orig.tar.gz
Size/MD5 checksum: 415129 915264cb1ac8d7b78ea9eff3ba38ee04

Alpha architecture:

http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_alpha.deb
Size/MD5 checksum: 460960 e1d8a4257577fb4ebb66705275fa38a0

ARM architecture:

http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_arm.deb
Size/MD5 checksum: 458600 f969eb59fd48e34f9fa0ac0709315c26

Intel IA-32 architecture:

http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_i386.deb
Size/MD5 checksum: 475002 64035fc874ed300ade121957bd550e24

Intel IA-64 architecture:

http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_ia64.deb
Size/MD5 checksum: 461502 bfa37aa587621a19f8fe606157b9d207

HP Precision architecture:

http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_hppa.deb
Size/MD5 checksum: 459156 0116618a21c275f085b8d54aba503ae7

Motorola 680x0 architecture:

http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_m68k.deb
Size/MD5 checksum: 458684 233315c6f2fcd7914fc88bb4d775dacf

Big endian MIPS architecture:

http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_mips.deb
Size/MD5 checksum: 459154 14fe9870d61986680c7b36568ba070b4

Little endian MIPS architecture:

http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_mipsel.deb
Size/MD5 checksum: 459120 e401830cfcbb84a0fa79bfacfd291460

PowerPC architecture:

http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_powerpc.deb
Size/MD5 checksum: 459464 e3793f4d40a7b363b4c6b9787635bf1a

IBM S/390 architecture:

http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_s390.deb
Size/MD5 checksum: 459472 0ea41eaa4395227f8c58d4e979ac014b

Sun Sparc architecture:

http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_sparc.deb
Size/MD5 checksum: 463962 e7f4892277153b9a24e2b5331703e2b7

Vendor URL:  www.gnu.org/software/mailman/mailman.html (Links to External Site)
Cause:   Input validation error
Underlying OS:   Linux (Debian)

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

Date:  Mon, 26 Aug 2002 19:03:51 +0200 (CEST)
Subject:  [SECURITY] [DSA 147-2] New mailman packages fix cross-site scripting problem


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

- --------------------------------------------------------------------------
Debian Security Advisory DSA 147-2                     security@debian.org
http://www.debian.org/security/                             Martin Schulze
August 26th, 2002                       http://www.debian.org/security/faq
- --------------------------------------------------------------------------

Package        : mailman
Vulnerability  : cross-site scripting
Problem-Type   : remote
Debian-specific: no
CVE Id         : CAN-2002-0388

Quoting DSA 147-1:

   A cross-site scripting vulnerability was discovered in mailman, a
   software to manage electronic mailing lists.  When a properly
   crafted URL is accessed with Internet Explorer (other browsers
   don't seem to be affected), the resulting webpage is rendered
   similar to the real one, but the javascript component is executed
   as well, which could be used by an attacker to get access to
   sensitive information.  The new version for Debian 2.2 also
   includes backports of security related patches from mailman 2.0.11.

This has been fixed in DSA 147-1 already, however, contrary to popular
belief, it turned out that the Python packaging does not upgrade
Python 1.5 users to 2.1 when upgrading from potato to woody.  It also
turned out that the mailman security update unwittingly introduced a
dependency to Python 2.1, both in the security update and upstream,
which left the package unusable on some systems.

This problem has been fixed in version 2.0.11-1woody4 for the current
stable distribution (woody).  Others are not affected.

We recommend that you upgrade your mailman package.

wget url
	will fetch the file for you
dpkg -i file.deb
        will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
        will update the internal database
apt-get upgrade
        will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.


Debian GNU/Linux 3.0 alias woody
- --------------------------------

  Source archives:

    http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4.dsc
      Size/MD5 checksum:      595 b154928ff9853f95ea301c452f23605d
    http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4.diff.gz
      Size/MD5 checksum:    31005 08c23b520ae4b9f4e7ef45b465ad7e47
    http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11.orig.tar.gz
      Size/MD5 checksum:   415129 915264cb1ac8d7b78ea9eff3ba38ee04

  Alpha architecture:

    http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_alpha.deb
      Size/MD5 checksum:   460960 e1d8a4257577fb4ebb66705275fa38a0

  ARM architecture:

    http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_arm.deb
      Size/MD5 checksum:   458600 f969eb59fd48e34f9fa0ac0709315c26

  Intel IA-32 architecture:

    http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_i386.deb
      Size/MD5 checksum:   475002 64035fc874ed300ade121957bd550e24

  Intel IA-64 architecture:

    http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_ia64.deb
      Size/MD5 checksum:   461502 bfa37aa587621a19f8fe606157b9d207

  HP Precision architecture:

    http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_hppa.deb
      Size/MD5 checksum:   459156 0116618a21c275f085b8d54aba503ae7

  Motorola 680x0 architecture:

    http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_m68k.deb
      Size/MD5 checksum:   458684 233315c6f2fcd7914fc88bb4d775dacf

  Big endian MIPS architecture:

    http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_mips.deb
      Size/MD5 checksum:   459154 14fe9870d61986680c7b36568ba070b4

  Little endian MIPS architecture:

    http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_mipsel.deb
      Size/MD5 checksum:   459120 e401830cfcbb84a0fa79bfacfd291460

  PowerPC architecture:

    http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_powerpc.deb
      Size/MD5 checksum:   459464 e3793f4d40a7b363b4c6b9787635bf1a

  IBM S/390 architecture:

    http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_s390.deb
      Size/MD5 checksum:   459472 0ea41eaa4395227f8c58d4e979ac014b

  Sun Sparc architecture:

    http://security.debian.org/pool/updates/main/m/mailman/mailman_2.0.11-1woody4_sparc.deb
      Size/MD5 checksum:   463962 e7f4892277153b9a24e2b5331703e2b7


  These files will probably be moved into the stable distribution on
  its next revision.

- ---------------------------------------------------------------------------------
For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>

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Version: GnuPG v1.0.7 (GNU/Linux)

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lKeCiO1Giop7hkWlfK9ng4s=
=sis6
-----END PGP SIGNATURE-----


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