Multiple vulnerabilities in Merak Mail Server 8.0.3 with Icewarp Web Mail 5.4.2
ShineShadow Security Report 04052005-05
TITLE: Multiple vulnerabilities in Merak Mail Server 8.0.3 with Icewarp Web
Mail 5.4.2.
BACKGROUND
Merak Mail Server, with the revolutionary Merak Mail Server GroupWare Server,
cutting-edge Merak Mail Server Instant Antispam and much more, is the fastest,
most stable, secure and 100% virus free mail server on the market today.
Every day companies choose Merak Mail Server's stability, speed, security,
functionality, scalability and multi-tiered delegated manageability over
products costing thousands of dollars more yet lacking the sophistication that
Merak delivers.
In less than 10 minutes you can have the same professional email server that
organizations such as NATO, the U.S. Navy, the FBI, Toyota, the U.S.
Government, and many ISP Providers and Developers depend on every day.
Source: www.MerakMailServer.com
VULNERABLE PRODUCT
MERAK Mail Server 8.0.3 with Icewarp Web Mail 5.4.2 (maybe other)
DETAILS
1. Multiple cross-site scripting (XSS) vulnerabilities.
Description:
Remote user, who HAS account on Merak Mail Server, can execute cross-site
scripting (XSS) attack.
Vulnerable scripts:
address.html
addressaction.html
settings.html
calendarsettings.html
Examples:
http://localhost:32000/mail/address.html -> Add New Address -> E-mail address =
[xss_here]
http://localhost:32000/mail/address.html -> Add New Address -> Other -> Note =
[xss_here]
http://localhost:32000/mail/address.html -> Add New Address -> Public
Certificate (PEM Format) = [xss_here]
http://localhost:32000/mail/settings.html -> Signature = [xss_here]
http://localhost:32000/mail/calendarsettings.html -> Shared calendars =
[xss_here]
2. Full install path disclosure.
Description:
Remote user, who HAS account on Merak Mail Server, can disclosure full install
path of the product. It could be used during attack on an affected system.
Vulnerable scripts:
calendar_addevent.html
calendar_event.html
calendar_task.html
Examples:
http://localhost:32000/mail/calendar_addevent.html?id=[sessionid]
http://localhost:32000/mail/calendar_event.html?id=[sessionid]
http://localhost:32000/mail/calendar_task.html?id=[sessionid]
3. Moving user home directory.
Description:
Remote user, who HAS account on Merak Mail Server, can moving his home
directory with subdirectories to his mail folder.
Default home directory: [Merak Root Dir] \ Webmail \ Users \ [Domain] \ [User]
Default user mail folder: [Merak Root Dir] \ Mail \ [Domain] \ [User]
It could be used during attack on an affected system.
Vulnerable script:
viewaction.html
Example:
http://localhost:32000/mail/viewaction.html?id=[sessionid]&Move_x=1&folder=\
4. MERAK local file detection.
Description:
Remote user, who HAS account on Merak Mail Server, can detect arbitrary file
existing on local file system of Merak Mail Server. It could be used during
attack on an affected system.
Note: File mailbox.dat (in user home directory) MUST NOT EXISTS during
exploiting of this vulnerability. Possible move this file using vulnerability
#3.
Vulnerable script:
attachment.html
Example:
http://localhost:32000/mail/attachment.html?id=[sessionid]&attachmentpage_text_title=FILE
NOT FOUND&folder=[full path to file]
5. Moving and viewing arbitrary files on remote system.
Description:
Remote user, who HAS account on Merak Mail Server, can moving arbitrary files
on local file system of the target. The file will be moved to user home
directory (default [Merak Root Dir]\webmail\users\[Domain]\[User]) and will be
renamed to import.tmp. After that attacker can view this file using
vulnerability #3 or import file to address book and view it in there. This
vulnerability could be used for causing denial of service (DOS) conditions or
access to arbitrary files on affected system. From files user.dat, users.dat
attacker could get users and administrators passwords and take complete control
of a Merak Mail Server. With administrator privileges on Merak Mail Server the
attacker using [Executables] function of the product could execute arbitrary
commands on remote system with mailserver privileges. If Merak Mail Server was
been running under administrator account then attacker could take complete
control of an affected system. This vulnerability also could be used for
detection arbitrary file existing on Merak Mail Server.
Vulnerable script:
importaction.html
Example:
Moving target file to user home directory:
http://localhost:32000/importaction.html?id=[sessionid]&importfile=[arbitrary
path]&action=upload&Import=1&importfile_size=1000000
Import target file to user address book:
http://localhost:32000/mail/importaction.html?id=[sessionid]&action=set÷r=%3a&sel[0]=NAME1
6. Unfixed old vulnerabilities.
Description:
Merak Mail Server 8.0.3 with Icewarp Web Mail 5.4.2 has unfixed old
vulnerabilities. In January I discovered some vulnerabilities in Merak Mail
Server 7.6.4r with Icewarp Web Mail
5.3.2(http://www.securityfocus.com/archive/1/388751). The following
vulnerabilities are NOT been fixed by vendor and exists in the Icewarp Web Mail
5.4.2:
- Full install path disclosure
- Weakness encryption of the users passwords
EXPLOITATION
IceWarp Web Mail (control.exe service) must be running on Merak Mail Server.
Account on Merak Mail Server is needed.
WORKAROUND
Disable Icewarp Web Mail service (Control.exe).
VENDOR STATUS
Not contacted.
SUMMARY
An attacker who successfully exploited vulnerabilities described in this report
could take complete control of a Merak Mail Server 8.0.3 or an affected remote
system. Merak Mail Server 8.0.3r with Icewarp Web Mail 5.4.3 also vulnerable to
other (undescribed in this report) critical vulnerabilities. An attacker who
successfully exploited of this undescribed vulnerabilities could take complete
control of a Merak Mail Server or an affected remote system. I?m not advice to
use this product, you must disable Icewarp Web Mail service.
CREDITS
ShineShadow, undependent IT security expert.
To get more information, please contact me by e-mail.
04.05.2005
ShineShadow,
ss_contacts@xxxxxxxxxxx