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Category:   Application (E-mail Server)  >   SquirrelMail Vendors:   SquirrelMail Development Team
(Red Hat Issues Fix) SquirrelMail Input Validation Flaws in Compose, Draft, and HTML Viewing Functions Permit Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1017577
SecurityTracker URL:  http://securitytracker.com/id/1017577
CVE Reference:   CVE-2006-6142   (Links to External Site)
Date:  Jan 31 2007
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): 1.4.0 - 1.4.9
Description:   A vulnerability was reported in SquirrelMail. A remote user can conduct cross-site scripting attacks.

Several scripts do not properly filter HTML code from user-supplied input before displaying the input. A remote user can 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 'mailto' parameter in 'webmail.php' and the 'session' and 'delete_draft' parameters in 'compose.php' are affected.

The HTML mail viewer is also affected.

Martijn Brinkers discovered this vulnerability.

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.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2007-0022.html

Vendor URL:  www.squirrelmail.org/security/issue/2006-12-02 (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  3, 4

Message History:   This archive entry is a follow-up to the message listed below.
Dec 4 2006 SquirrelMail Input Validation Flaws in Compose, Draft, and HTML Viewing Functions Permit Cross-Site Scripting Attacks



 Source Message Contents

Subject:  [RHSA-2007:0022-01] Moderate: squirrelmail security update


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

Synopsis:          Moderate: squirrelmail security update
Advisory ID:       RHSA-2007:0022-01
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2007-0022.html
Issue date:        2007-01-31
Updated on:        2007-01-31
Product:           Red Hat Enterprise Linux
CVE Names:         CVE-2006-6142 
- ---------------------------------------------------------------------

1. Summary:

A new squirrelmail package that fixes security issues is now available for
Red Hat Enterprise Linux 3 and 4.

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
Red Hat Enterprise Linux AS version 4 - noarch
Red Hat Enterprise Linux Desktop version 4 - noarch
Red Hat Enterprise Linux ES version 4 - noarch
Red Hat Enterprise Linux WS version 4 - noarch

3. Problem description:

SquirrelMail is a standards-based webmail package written in PHP.

Several cross-site scripting bugs were discovered in SquirrelMail.  An
attacker could inject arbitrary Javascript or HTML content into
SquirrelMail pages by tricking a user into visiting a carefully crafted
URL.  (CVE-2006-6142) 

Users of SquirrelMail should upgrade to this erratum package, which
contains a backported patch to correct these issues. 

Notes:
- - After installing this update, users are advised to restart their
httpd service to ensure that the updated version functions correctly.
- - config.php should NOT be modified, please modify config_local.php instead.
- - Known Bug: The configuration generator may potentially produce bad
options that interfere with the operation of this application.  Applying
specific config changes to config_local.php manually is recommended.

4. Solution:

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

This update is available via Red Hat Network.  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/):

218294 - CVE-2006-6142 Three XSS issues in SquirrelMail

6. RPMs required:

Red Hat Enterprise Linux AS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/squirrelmail-1.4.8-4.el3.src.rpm
b2dacb06975968e36f977d55af698001  squirrelmail-1.4.8-4.el3.src.rpm

noarch:
865dcb1f2136970e1a700b721cb6773f  squirrelmail-1.4.8-4.el3.noarch.rpm

Red Hat Desktop version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/squirrelmail-1.4.8-4.el3.src.rpm
b2dacb06975968e36f977d55af698001  squirrelmail-1.4.8-4.el3.src.rpm

noarch:
865dcb1f2136970e1a700b721cb6773f  squirrelmail-1.4.8-4.el3.noarch.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/squirrelmail-1.4.8-4.el3.src.rpm
b2dacb06975968e36f977d55af698001  squirrelmail-1.4.8-4.el3.src.rpm

noarch:
865dcb1f2136970e1a700b721cb6773f  squirrelmail-1.4.8-4.el3.noarch.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/squirrelmail-1.4.8-4.el3.src.rpm
b2dacb06975968e36f977d55af698001  squirrelmail-1.4.8-4.el3.src.rpm

noarch:
865dcb1f2136970e1a700b721cb6773f  squirrelmail-1.4.8-4.el3.noarch.rpm

Red Hat Enterprise Linux AS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/squirrelmail-1.4.8-4.el4.src.rpm
b694b40b7d7e475a3f3c595810ef7192  squirrelmail-1.4.8-4.el4.src.rpm

noarch:
267c1d4b63b5d0b125bf012a6e1d0410  squirrelmail-1.4.8-4.el4.noarch.rpm

Red Hat Enterprise Linux Desktop version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/squirrelmail-1.4.8-4.el4.src.rpm
b694b40b7d7e475a3f3c595810ef7192  squirrelmail-1.4.8-4.el4.src.rpm

noarch:
267c1d4b63b5d0b125bf012a6e1d0410  squirrelmail-1.4.8-4.el4.noarch.rpm

Red Hat Enterprise Linux ES version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/squirrelmail-1.4.8-4.el4.src.rpm
b694b40b7d7e475a3f3c595810ef7192  squirrelmail-1.4.8-4.el4.src.rpm

noarch:
267c1d4b63b5d0b125bf012a6e1d0410  squirrelmail-1.4.8-4.el4.noarch.rpm

Red Hat Enterprise Linux WS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/squirrelmail-1.4.8-4.el4.src.rpm
b694b40b7d7e475a3f3c595810ef7192  squirrelmail-1.4.8-4.el4.src.rpm

noarch:
267c1d4b63b5d0b125bf012a6e1d0410  squirrelmail-1.4.8-4.el4.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=CVE-2006-6142
http://www.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2007 Red Hat, Inc.
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