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Category:   Application (E-mail Server)  >   SquirrelMail Vendors:   SquirrelMail Development Team
(Red Hat Issues Fix) SquirrelMail Include File Bug May Let Remote Users Access Files on the Target System
SecurityTracker Alert ID:  1016424
SecurityTracker URL:  http://securitytracker.com/id/1016424
CVE Reference:   CVE-2006-2842   (Links to External Site)
Date:  Jul 3 2006
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.4.6 and prior versions
Description:   A vulnerability was reported in SquirrelMail. A remote user can include and view files on the target system.

The 'functions/plugin.php' script does not properly validate user-supplied input in the 'name' parameter. If register_globals is enabled and magic_quotes_gpc is disabled, a remote user can supply a specially crafted URL to cause the target system to include files from the target system. This may allow the remote user to view the contents of the file.

A demonstration exploit URL is provided:

http://[target]/[squirrelmail dir]/src/redirect.php?plugins[]=../../../../etc/passwd%00

The vendor credits Junker Broke of Denix Solutions with reporting this vulnerability.

Impact:   A remote user may be able to view files on the target system.
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-1.4.6-7.el3.src.rpm
d310bf4a75754f83774a1bad5bc37aa4 squirrelmail-1.4.6-7.el3.src.rpm

noarch:
47b5a0299a8e709af48cc45e95c9591a squirrelmail-1.4.6-7.el3.noarch.rpm

Red Hat Desktop version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/squirrelmail-1.4.6-7.el3.src.rpm
d310bf4a75754f83774a1bad5bc37aa4 squirrelmail-1.4.6-7.el3.src.rpm

noarch:
47b5a0299a8e709af48cc45e95c9591a squirrelmail-1.4.6-7.el3.noarch.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/squirrelmail-1.4.6-7.el3.src.rpm
d310bf4a75754f83774a1bad5bc37aa4 squirrelmail-1.4.6-7.el3.src.rpm

noarch:
47b5a0299a8e709af48cc45e95c9591a squirrelmail-1.4.6-7.el3.noarch.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/squirrelmail-1.4.6-7.el3.src.rpm
d310bf4a75754f83774a1bad5bc37aa4 squirrelmail-1.4.6-7.el3.src.rpm

noarch:
47b5a0299a8e709af48cc45e95c9591a squirrelmail-1.4.6-7.el3.noarch.rpm

Red Hat Enterprise Linux AS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/squirrelmail-1.4.6-7.el4.src.rpm
8719b14cfb91fae1539d5b7e9abb26be squirrelmail-1.4.6-7.el4.src.rpm

noarch:
fda560d56eea306af1bbbf2aff442e6a squirrelmail-1.4.6-7.el4.noarch.rpm

Red Hat Enterprise Linux Desktop version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/squirrelmail-1.4.6-7.el4.src.rpm
8719b14cfb91fae1539d5b7e9abb26be squirrelmail-1.4.6-7.el4.src.rpm

noarch:
fda560d56eea306af1bbbf2aff442e6a squirrelmail-1.4.6-7.el4.noarch.rpm

Red Hat Enterprise Linux ES version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/squirrelmail-1.4.6-7.el4.src.rpm
8719b14cfb91fae1539d5b7e9abb26be squirrelmail-1.4.6-7.el4.src.rpm

noarch:
fda560d56eea306af1bbbf2aff442e6a squirrelmail-1.4.6-7.el4.noarch.rpm

Red Hat Enterprise Linux WS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/squirrelmail-1.4.6-7.el4.src.rpm
8719b14cfb91fae1539d5b7e9abb26be squirrelmail-1.4.6-7.el4.src.rpm

noarch:
fda560d56eea306af1bbbf2aff442e6a squirrelmail-1.4.6-7.el4.noarch.rpm

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2006-0547.html

Vendor URL:  www.squirrelmail.org/security/issue/2006-06-01 (Links to External Site)
Cause:   Access control error, 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 2 2006 SquirrelMail Include File Bug May Let Remote Users Access Files on the Target System



 Source Message Contents

Subject:  [RHSA-2006:0547-01] Moderate: squirrelmail security update


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

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

Synopsis:          Moderate: squirrelmail security update
Advisory ID:       RHSA-2006:0547-01
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2006-0547.html
Issue date:        2006-07-03
Updated on:        2006-07-03
Product:           Red Hat Enterprise Linux
CVE Names:         CVE-2006-2842 
- ---------------------------------------------------------------------

1. Summary:

An updated squirrelmail package that fixes a local file disclosure flaw 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 local file disclosure flaw was found in the way SquirrelMail loads
plugins. In SquirrelMail 1.4.6 or earlier, if register_globals is on and
magic_quotes_gpc is off, it became possible for an unauthenticated remote
user to view the contents of arbitrary local files the web server has
read-access to. This configuration is neither default nor safe, and
configuring PHP with the register_globals set on is dangerous and not
recommended.  (CVE-2006-2842) 

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

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/):

194283 - CVE-2006-2842 Squirrelmail file inclusion

6. RPMs required:

Red Hat Enterprise Linux AS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/squirrelmail-1.4.6-7.el3.src.rpm
d310bf4a75754f83774a1bad5bc37aa4  squirrelmail-1.4.6-7.el3.src.rpm

noarch:
47b5a0299a8e709af48cc45e95c9591a  squirrelmail-1.4.6-7.el3.noarch.rpm

Red Hat Desktop version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/squirrelmail-1.4.6-7.el3.src.rpm
d310bf4a75754f83774a1bad5bc37aa4  squirrelmail-1.4.6-7.el3.src.rpm

noarch:
47b5a0299a8e709af48cc45e95c9591a  squirrelmail-1.4.6-7.el3.noarch.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/squirrelmail-1.4.6-7.el3.src.rpm
d310bf4a75754f83774a1bad5bc37aa4  squirrelmail-1.4.6-7.el3.src.rpm

noarch:
47b5a0299a8e709af48cc45e95c9591a  squirrelmail-1.4.6-7.el3.noarch.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/squirrelmail-1.4.6-7.el3.src.rpm
d310bf4a75754f83774a1bad5bc37aa4  squirrelmail-1.4.6-7.el3.src.rpm

noarch:
47b5a0299a8e709af48cc45e95c9591a  squirrelmail-1.4.6-7.el3.noarch.rpm

Red Hat Enterprise Linux AS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/squirrelmail-1.4.6-7.el4.src.rpm
8719b14cfb91fae1539d5b7e9abb26be  squirrelmail-1.4.6-7.el4.src.rpm

noarch:
fda560d56eea306af1bbbf2aff442e6a  squirrelmail-1.4.6-7.el4.noarch.rpm

Red Hat Enterprise Linux Desktop version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/squirrelmail-1.4.6-7.el4.src.rpm
8719b14cfb91fae1539d5b7e9abb26be  squirrelmail-1.4.6-7.el4.src.rpm

noarch:
fda560d56eea306af1bbbf2aff442e6a  squirrelmail-1.4.6-7.el4.noarch.rpm

Red Hat Enterprise Linux ES version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/squirrelmail-1.4.6-7.el4.src.rpm
8719b14cfb91fae1539d5b7e9abb26be  squirrelmail-1.4.6-7.el4.src.rpm

noarch:
fda560d56eea306af1bbbf2aff442e6a  squirrelmail-1.4.6-7.el4.noarch.rpm

Red Hat Enterprise Linux WS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/squirrelmail-1.4.6-7.el4.src.rpm
8719b14cfb91fae1539d5b7e9abb26be  squirrelmail-1.4.6-7.el4.src.rpm

noarch:
fda560d56eea306af1bbbf2aff442e6a  squirrelmail-1.4.6-7.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-2006-2842
http://www.squirrelmail.org/security/issue/2006-06-01
http://www.php.net/register_globals
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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