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Category:   Application (E-mail Server)  >   SquirrelMail Vendors:   SquirrelMail Development Team
(Red Hat Issues Fix) SquirrelMail Input Validation Holes in Multiple Scripts Permit Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1014619
SecurityTracker URL:  http://securitytracker.com/id/1014619
CVE Reference:   CVE-2005-1769   (Links to External Site)
Date:  Aug 3 2005
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 - 1.4.4
Description:   Some input validation vulnerabilities were reported in SquirrelMail. A remote user can conduct cross-site scripting attacks.

Several scripts do not properly validate user-supplied input. 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. A remote user can also send 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 addressbook.php, mime.php, page_header.php, calendar.php, day.php, event_create.php, event_edit.php, options.php, spamoptions.php, mailout.php, and newmail.php scripts and other scripts are affected.

The vendor credits Martijn Brinkers with discovering many of these vulnerabilities.

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-10.EL3.src.rpm
ba88d8cade37412c5abda4e5c4660b18 squirrelmail-1.4.3a-10.EL3.src.rpm

noarch:
78615d9edfaa42e09f81267778e121ed squirrelmail-1.4.3a-10.EL3.noarch.rpm

Red Hat Desktop version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/squirrelmail-1.4.3a-10.EL3.src.rpm
ba88d8cade37412c5abda4e5c4660b18 squirrelmail-1.4.3a-10.EL3.src.rpm

noarch:
78615d9edfaa42e09f81267778e121ed squirrelmail-1.4.3a-10.EL3.noarch.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/squirrelmail-1.4.3a-10.EL3.src.rpm
ba88d8cade37412c5abda4e5c4660b18 squirrelmail-1.4.3a-10.EL3.src.rpm

noarch:
78615d9edfaa42e09f81267778e121ed squirrelmail-1.4.3a-10.EL3.noarch.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/squirrelmail-1.4.3a-10.EL3.src.rpm
ba88d8cade37412c5abda4e5c4660b18 squirrelmail-1.4.3a-10.EL3.src.rpm

noarch:
78615d9edfaa42e09f81267778e121ed squirrelmail-1.4.3a-10.EL3.noarch.rpm

Red Hat Enterprise Linux AS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/squirrelmail-1.4.3a-11.EL4.src.rpm
4abd471bd12dce975d68297c2a82837f squirrelmail-1.4.3a-11.EL4.src.rpm

noarch:
b19badf585b022e32acd1a546b624e1b squirrelmail-1.4.3a-11.EL4.noarch.rpm

Red Hat Enterprise Linux Desktop version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/squirrelmail-1.4.3a-11.EL4.src.rpm
4abd471bd12dce975d68297c2a82837f squirrelmail-1.4.3a-11.EL4.src.rpm

noarch:
b19badf585b022e32acd1a546b624e1b squirrelmail-1.4.3a-11.EL4.noarch.rpm

Red Hat Enterprise Linux ES version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/squirrelmail-1.4.3a-11.EL4.src.rpm
4abd471bd12dce975d68297c2a82837f squirrelmail-1.4.3a-11.EL4.src.rpm

noarch:
b19badf585b022e32acd1a546b624e1b squirrelmail-1.4.3a-11.EL4.noarch.rpm

Red Hat Enterprise Linux WS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/squirrelmail-1.4.3a-11.EL4.src.rpm
4abd471bd12dce975d68297c2a82837f squirrelmail-1.4.3a-11.EL4.src.rpm

noarch:
b19badf585b022e32acd1a546b624e1b squirrelmail-1.4.3a-11.EL4.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, 4

Message History:   This archive entry is a follow-up to the message listed below.
Jun 16 2005 SquirrelMail Input Validation Holes in Multiple Scripts Permit Cross-Site Scripting Attacks



 Source Message Contents

Subject:  [RHSA-2005:595-01] Moderate: SquirrelMail security update


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

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

Synopsis:          Moderate: SquirrelMail security update
Advisory ID:       RHSA-2005:595-01
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2005-595.html
Issue date:        2005-08-03
Updated on:        2005-08-03
Product:           Red Hat Enterprise Linux
CVE Names:         CAN-2005-2095 CAN-2005-1769
- ---------------------------------------------------------------------

1. Summary:

An updated squirrelmail package that fixes two security issues is now
available.

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 handled the $_POST variable. A
user's SquirrelMail preferences could be read or modified if the user is
tricked into visiting a malicious URL. The Common Vulnerabilities and
Exposures project assigned the name CAN-2005-2095 to this issue.

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, or by sending them a carefully constructed HTML email message. 
(CAN-2005-1769)

All users of SquirrelMail should upgrade to this updated package, which
contains backported patches that resolve 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/

Additionally, users will have to bring up the "Network Proxy" dialog and
reset their keys for the settings to take place.

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

160241 - CAN-2005-1769 Multiple XSS issues in squirrelmail
162275 - CAN-2005-2095 squirrelmail cross site posting issue


6. RPMs required:

Red Hat Enterprise Linux AS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/squirrelmail-1.4.3a-10.EL3.src.rpm
ba88d8cade37412c5abda4e5c4660b18  squirrelmail-1.4.3a-10.EL3.src.rpm

noarch:
78615d9edfaa42e09f81267778e121ed  squirrelmail-1.4.3a-10.EL3.noarch.rpm

Red Hat Desktop version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/squirrelmail-1.4.3a-10.EL3.src.rpm
ba88d8cade37412c5abda4e5c4660b18  squirrelmail-1.4.3a-10.EL3.src.rpm

noarch:
78615d9edfaa42e09f81267778e121ed  squirrelmail-1.4.3a-10.EL3.noarch.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/squirrelmail-1.4.3a-10.EL3.src.rpm
ba88d8cade37412c5abda4e5c4660b18  squirrelmail-1.4.3a-10.EL3.src.rpm

noarch:
78615d9edfaa42e09f81267778e121ed  squirrelmail-1.4.3a-10.EL3.noarch.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/squirrelmail-1.4.3a-10.EL3.src.rpm
ba88d8cade37412c5abda4e5c4660b18  squirrelmail-1.4.3a-10.EL3.src.rpm

noarch:
78615d9edfaa42e09f81267778e121ed  squirrelmail-1.4.3a-10.EL3.noarch.rpm

Red Hat Enterprise Linux AS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/squirrelmail-1.4.3a-11.EL4.src.rpm
4abd471bd12dce975d68297c2a82837f  squirrelmail-1.4.3a-11.EL4.src.rpm

noarch:
b19badf585b022e32acd1a546b624e1b  squirrelmail-1.4.3a-11.EL4.noarch.rpm

Red Hat Enterprise Linux Desktop version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/squirrelmail-1.4.3a-11.EL4.src.rpm
4abd471bd12dce975d68297c2a82837f  squirrelmail-1.4.3a-11.EL4.src.rpm

noarch:
b19badf585b022e32acd1a546b624e1b  squirrelmail-1.4.3a-11.EL4.noarch.rpm

Red Hat Enterprise Linux ES version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/squirrelmail-1.4.3a-11.EL4.src.rpm
4abd471bd12dce975d68297c2a82837f  squirrelmail-1.4.3a-11.EL4.src.rpm

noarch:
b19badf585b022e32acd1a546b624e1b  squirrelmail-1.4.3a-11.EL4.noarch.rpm

Red Hat Enterprise Linux WS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/squirrelmail-1.4.3a-11.EL4.src.rpm
4abd471bd12dce975d68297c2a82837f  squirrelmail-1.4.3a-11.EL4.src.rpm

noarch:
b19badf585b022e32acd1a546b624e1b  squirrelmail-1.4.3a-11.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=CAN-2005-2095
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1769

8. Contact:

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

Copyright 2005 Red Hat, Inc.

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