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Category:   Application (E-mail Server)  >   SquirrelMail Vendors:   SquirrelMail Development Team
(Red Hat Issues Fix) SquirrelMail Input Validation Hole in 'mime.php' Lets Remote Users Conduct Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1012696
SecurityTracker URL:  http://securitytracker.com/id/1012696
CVE Reference:   CVE-2004-1036   (Links to External Site)
Date:  Dec 24 2004
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.4.3a and earlier; SquirrelMail 1.5.1-cvs before October 23, 2004
Description:   An input validation vulnerability was reported in SquirrelMail in 'mime.php'. A remote user can conduct cross-site scripting attacks.

The vendor reported that the software does not properly validate encoded text in certain headers. A remote user can create specially crafted e-mail that, when viewed by a target user, will cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the SquirrelMail software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

The flaw resides in 'mime.php'.

The vendor credits Joost Pol with reporting this flaw.

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the SquirrelMail software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
Solution:   Red Hat has released a fix.

Red Hat Enterprise Linux AS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/squirrelmail-1.4.3a-7.EL3.src.rpm
cde6c22b57c88c4ec80545f83d7f16fd squirrelmail-1.4.3a-7.EL3.src.rpm

noarch:
f207da5253a4493cd502a13aae2dd77e squirrelmail-1.4.3a-7.EL3.noarch.rpm

Red Hat Desktop version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/squirrelmail-1.4.3a-7.EL3.src.rpm
cde6c22b57c88c4ec80545f83d7f16fd squirrelmail-1.4.3a-7.EL3.src.rpm

noarch:
f207da5253a4493cd502a13aae2dd77e squirrelmail-1.4.3a-7.EL3.noarch.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/squirrelmail-1.4.3a-7.EL3.src.rpm
cde6c22b57c88c4ec80545f83d7f16fd squirrelmail-1.4.3a-7.EL3.src.rpm

noarch:
f207da5253a4493cd502a13aae2dd77e squirrelmail-1.4.3a-7.EL3.noarch.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/squirrelmail-1.4.3a-7.EL3.src.rpm
cde6c22b57c88c4ec80545f83d7f16fd squirrelmail-1.4.3a-7.EL3.src.rpm

noarch:
f207da5253a4493cd502a13aae2dd77e squirrelmail-1.4.3a-7.EL3.noarch.rpm

Vendor URL:  www.squirrelmail.org/ (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  3

Message History:   This archive entry is a follow-up to the message listed below.
Nov 10 2004 SquirrelMail Input Validation Hole in 'mime.php' Lets Remote Users Conduct Cross-Site Scripting Attacks



 Source Message Contents

Subject:  [RHSA-2004:654-01] Updated SquirrelMail package fixes security


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

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

Synopsis:          Updated SquirrelMail package fixes security vulnerability
Advisory ID:       RHSA-2004:654-01
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2004-654.html
Issue date:        2004-12-23
Updated on:        2004-12-23
Product:           Red Hat Enterprise Linux
CVE Names:         CAN-2004-1036
- ---------------------------------------------------------------------

1. Summary:

An updated SquirrelMail package that fixes a cross-site scripting
vulnerability is now available.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 3 - noarch
Red Hat Desktop version 3 - noarch
Red Hat Enterprise Linux ES version 3 - noarch
Red Hat Enterprise Linux WS version 3 - noarch

3. Problem description:

SquirrelMail is a webmail package written in PHP.

A cross-site scripting bug has been found in SquirrelMail.  This issue
could allow an attacker to send a mail with a carefully crafted header,
which could result in causing the victim's machine to execute a malicious
script. The Common Vulnerabilities and Exposures project has assigned the
name CAN-2004-1036 to this issue.

Additionally, the following issues have been addressed:

- - updated splash screens
- - HIGASHIYAMA Masato's patch to improve Japanese support
- - real 1.4.3a tarball
- - config_local.php and default_pref in /etc/squirrelmail/ to match upstream   
  RPM.

Please note that it is possible that upgrading to this package may remove
your SquirrelMail configuration files due to a bug in the RPM package. 
Upgrading will prevent this from happening in the future.

Users of SquirrelMail are advised to upgrade to this updated package which
contains a patched version of SquirrelMail version 1.43a and is not
vulnerable to these issues.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.  Use Red Hat
Network to download and update your packages.  To launch the Red Hat
Update Agent, use the following command:

    up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

    http://www.redhat.com/docs/manuals/enterprise/

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

139739 - CAN-2004-1036 Cross Site Scripting in encoded text
112769 - The login page says Red Hat Linux instead of Fedora/RHEL
125638 - config_local.php is not listed as a config file

6. RPMs required:

Red Hat Enterprise Linux AS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/squirrelmail-1.4.3a-7.EL3.src.rpm
cde6c22b57c88c4ec80545f83d7f16fd  squirrelmail-1.4.3a-7.EL3.src.rpm

noarch:
f207da5253a4493cd502a13aae2dd77e  squirrelmail-1.4.3a-7.EL3.noarch.rpm

Red Hat Desktop version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/squirrelmail-1.4.3a-7.EL3.src.rpm
cde6c22b57c88c4ec80545f83d7f16fd  squirrelmail-1.4.3a-7.EL3.src.rpm

noarch:
f207da5253a4493cd502a13aae2dd77e  squirrelmail-1.4.3a-7.EL3.noarch.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/squirrelmail-1.4.3a-7.EL3.src.rpm
cde6c22b57c88c4ec80545f83d7f16fd  squirrelmail-1.4.3a-7.EL3.src.rpm

noarch:
f207da5253a4493cd502a13aae2dd77e  squirrelmail-1.4.3a-7.EL3.noarch.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/squirrelmail-1.4.3a-7.EL3.src.rpm
cde6c22b57c88c4ec80545f83d7f16fd  squirrelmail-1.4.3a-7.EL3.src.rpm

noarch:
f207da5253a4493cd502a13aae2dd77e  squirrelmail-1.4.3a-7.EL3.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://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1036

8. Contact:

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

Copyright 2004 Red Hat, Inc.

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