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Category:   Application (E-mail Server)  >   SquirrelMail Vendors:   SquirrelMail Development Team
(Red Hat Issues Fix) SquirrelMail Input Validation Bugs Let Remote Users Inject IMAP Commands and Conduct Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1016025
SecurityTracker URL:  http://securitytracker.com/id/1016025
CVE Reference:   CVE-2006-0188, CVE-2006-0195, CVE-2006-0377   (Links to External Site)
Date:  May 3 2006
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): 1.4.5 and prior versions
Description:   A vulnerability was reported in SquirrelMail. A remote user can conduct cross-site scripting attacks. A remote user can also inject IMAP commands.

The 'webmail.php' script does not properly filter HTML code from user-supplied input in the 'right_frame' parameter before displaying the input [CVE-2006-0188]. A remote user can create a specially crafted URL that, when loaded 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.

Comments in styles are also affected [CVE-2006-0195]. This can only be exploited via Internet Explorer. Scott Hughes reported this vulnerability.

The 'sqimap_mailbox_select' mailbox parameter does not properly validate user-supplied input [CVE-2006-0377] in the 'subject' parameter and possibly other parameters. A remote user can inject IMAP commands. Vicente Aguilera reported this vulnerability.

The vendor was notified of the IMAP injection vulnerability on January 12, 2006.

The original advisories are available at:

http://www.squirrelmail.org/security/issue/2006-02-01
http://www.squirrelmail.org/security/issue/2006-02-10
http://www.squirrelmail.org/security/issue/2006-02-15

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.

A remote user can inject IMAP commands.

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-1.4.6-5.el3.src.rpm
1fe10ab0c6fc8f80035d1cf309047f90 squirrelmail-1.4.6-5.el3.src.rpm

noarch:
248e27d4444f0325d0147d4182d578b6 squirrelmail-1.4.6-5.el3.noarch.rpm

Red Hat Desktop version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/squirrelmail-1.4.6-5.el3.src.rpm
1fe10ab0c6fc8f80035d1cf309047f90 squirrelmail-1.4.6-5.el3.src.rpm

noarch:
248e27d4444f0325d0147d4182d578b6 squirrelmail-1.4.6-5.el3.noarch.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/squirrelmail-1.4.6-5.el3.src.rpm
1fe10ab0c6fc8f80035d1cf309047f90 squirrelmail-1.4.6-5.el3.src.rpm

noarch:
248e27d4444f0325d0147d4182d578b6 squirrelmail-1.4.6-5.el3.noarch.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/squirrelmail-1.4.6-5.el3.src.rpm
1fe10ab0c6fc8f80035d1cf309047f90 squirrelmail-1.4.6-5.el3.src.rpm

noarch:
248e27d4444f0325d0147d4182d578b6 squirrelmail-1.4.6-5.el3.noarch.rpm

Red Hat Enterprise Linux AS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/squirrelmail-1.4.6-5.el4.src.rpm
c8163c92c42c98ce77fae36cf84e1f52 squirrelmail-1.4.6-5.el4.src.rpm

noarch:
8552e96fa6ebb15ae9e033115b8f0fc3 squirrelmail-1.4.6-5.el4.noarch.rpm

Red Hat Enterprise Linux Desktop version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/squirrelmail-1.4.6-5.el4.src.rpm
c8163c92c42c98ce77fae36cf84e1f52 squirrelmail-1.4.6-5.el4.src.rpm

noarch:
8552e96fa6ebb15ae9e033115b8f0fc3 squirrelmail-1.4.6-5.el4.noarch.rpm

Red Hat Enterprise Linux ES version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/squirrelmail-1.4.6-5.el4.src.rpm
c8163c92c42c98ce77fae36cf84e1f52 squirrelmail-1.4.6-5.el4.src.rpm

noarch:
8552e96fa6ebb15ae9e033115b8f0fc3 squirrelmail-1.4.6-5.el4.noarch.rpm

Red Hat Enterprise Linux WS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/squirrelmail-1.4.6-5.el4.src.rpm
c8163c92c42c98ce77fae36cf84e1f52 squirrelmail-1.4.6-5.el4.src.rpm

noarch:
8552e96fa6ebb15ae9e033115b8f0fc3 squirrelmail-1.4.6-5.el4.noarch.rpm

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2006-0283.html

Vendor URL:  www.squirrelmail.org/security/issue/2006-02-01 (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.
Feb 22 2006 SquirrelMail Input Validation Bugs Let Remote Users Inject IMAP Commands and Conduct Cross-Site Scripting Attacks



 Source Message Contents

Subject:  [RHSA-2006:0283-01] Moderate: squirrelmail security update


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

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

Synopsis:          Moderate: squirrelmail security update
Advisory ID:       RHSA-2006:0283-01
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2006-0283.html
Issue date:        2006-05-03
Updated on:        2006-05-03
Product:           Red Hat Enterprise Linux
CVE Names:         CVE-2006-0188 CVE-2006-0195 CVE-2006-0377 
- ---------------------------------------------------------------------

1. Summary:

An updated squirrelmail package that fixes three security and many other
bug issues is now available.  This update contains bug fixes of upstream
squirrelmail 1.4.6 with some additional improvements to international
language support.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

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 PHP4.

A bug was found in the way SquirrelMail presents the right frame to the
user. If a user can be tricked into opening a carefully crafted URL, it is
possible to present the user with arbitrary HTML data. (CVE-2006-0188)

A bug was found in the way SquirrelMail filters incoming HTML email. It is
possible to cause a victim's web browser to request remote content by
opening a HTML email while running a web browser that processes certain
types of invalid style sheets. Only Internet Explorer is known to process
such malformed style sheets. (CVE-2006-0195)

A bug was found in the way SquirrelMail processes a request to select an
IMAP mailbox. If a user can be tricked into opening a carefully crafted
URL, it is possible to execute arbitrary IMAP commands as the user viewing
their mail with SquirrelMail. (CVE-2006-0377)

Users of SquirrelMail are advised to upgrade to this updated package, which
contains SquirrelMail version 1.4.6 and is not vulnerable to these issues.

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/):

182579 - CVE-2006-0188 Possible XSS through right_frame parameter in webmail.php
182581 - CVE-2006-0195 Possible XSS in MagicHTML (IE only)
182584 - CVE-2006-0377 IMAP injection in sqimap_mailbox_select mailbox parameter

6. RPMs required:

Red Hat Enterprise Linux AS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/squirrelmail-1.4.6-5.el3.src.rpm
1fe10ab0c6fc8f80035d1cf309047f90  squirrelmail-1.4.6-5.el3.src.rpm

noarch:
248e27d4444f0325d0147d4182d578b6  squirrelmail-1.4.6-5.el3.noarch.rpm

Red Hat Desktop version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/squirrelmail-1.4.6-5.el3.src.rpm
1fe10ab0c6fc8f80035d1cf309047f90  squirrelmail-1.4.6-5.el3.src.rpm

noarch:
248e27d4444f0325d0147d4182d578b6  squirrelmail-1.4.6-5.el3.noarch.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/squirrelmail-1.4.6-5.el3.src.rpm
1fe10ab0c6fc8f80035d1cf309047f90  squirrelmail-1.4.6-5.el3.src.rpm

noarch:
248e27d4444f0325d0147d4182d578b6  squirrelmail-1.4.6-5.el3.noarch.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/squirrelmail-1.4.6-5.el3.src.rpm
1fe10ab0c6fc8f80035d1cf309047f90  squirrelmail-1.4.6-5.el3.src.rpm

noarch:
248e27d4444f0325d0147d4182d578b6  squirrelmail-1.4.6-5.el3.noarch.rpm

Red Hat Enterprise Linux AS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/squirrelmail-1.4.6-5.el4.src.rpm
c8163c92c42c98ce77fae36cf84e1f52  squirrelmail-1.4.6-5.el4.src.rpm

noarch:
8552e96fa6ebb15ae9e033115b8f0fc3  squirrelmail-1.4.6-5.el4.noarch.rpm

Red Hat Enterprise Linux Desktop version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/squirrelmail-1.4.6-5.el4.src.rpm
c8163c92c42c98ce77fae36cf84e1f52  squirrelmail-1.4.6-5.el4.src.rpm

noarch:
8552e96fa6ebb15ae9e033115b8f0fc3  squirrelmail-1.4.6-5.el4.noarch.rpm

Red Hat Enterprise Linux ES version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/squirrelmail-1.4.6-5.el4.src.rpm
c8163c92c42c98ce77fae36cf84e1f52  squirrelmail-1.4.6-5.el4.src.rpm

noarch:
8552e96fa6ebb15ae9e033115b8f0fc3  squirrelmail-1.4.6-5.el4.noarch.rpm

Red Hat Enterprise Linux WS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/squirrelmail-1.4.6-5.el4.src.rpm
c8163c92c42c98ce77fae36cf84e1f52  squirrelmail-1.4.6-5.el4.src.rpm

noarch:
8552e96fa6ebb15ae9e033115b8f0fc3  squirrelmail-1.4.6-5.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-2006-0188
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0195
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0377
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 2006 Red Hat, Inc.
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