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Category:   Application (E-mail Server)  >   IMail Server Vendors:   Ipswitch
IMail Server Buffer Overflows in IMAP 'search' and 'search charset' Commands Let Remote Authenticated Users Execute Arbitrary Code
SecurityTracker Alert ID:  1018419
SecurityTracker URL:
CVE Reference:   CVE-2007-3925   (Links to External Site)
Updated:  Apr 24 2008
Original Entry Date:  Jul 19 2007
Impact:   Execution of arbitrary code via network, Root access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2006
Description:   A vulnerability was reported in IMail Server. A remote authenticated user can execute arbitrary code on the target system.

A remote authenticated user can send a specially crafted 'search' or 'search charset' IMAP command to trigger a buffer overflow and execute arbitrary code on the target system. The code will run with System privileges.

The vendor was notified on February 13, 2007.

Manuel Santamarina Suarez reported one of these vulnerabilities to iDefense.

Impact:   A remote authenticated user can execute arbitrary code on the target system.
Solution:   The vendor has issued a fix (2006.21).

The Ipswitch advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Boundary error
Underlying OS:  Windows (2000), Windows (2003)

Message History:   None.

 Source Message Contents

Subject:  iDefense Security Advisory 07.18.07: Ipswitch IMail Server 2006 IMAP

Ipswitch IMail Server 2006 Multiple IMAP Buffer Overflow Vulnerabilities

iDefense Security Advisory 07.18.07
Jul 18, 2007


Ipswitch Inc.'s IMail Server is an e-mail server aimed at providing
easily configured and maintained e-mail services for small
organizations. More information is available on the vendor's site at
the following URL.


Remote exploitation of multiple buffer overflow vulnerabilities in
Ipswitch Inc.'s IMail Server 2006 could allow attackers to execute
arbitrary code.

IMail includes an IMAP daemon that users can use to access their email.
The "Search" IMAP command contains an exploitable stack-based buffer
overflow vulnerability. Additionally, the "Search charset" contains an
exploitable heap-based buffer overflow vulnerability.


Exploitation allows an attacker to execute arbitrary code with SYSTEM

In order to exploit these issues, an attacker would need to login to a
vulnerable IMail IMAP Server using valid credentials.

The vulnerable component is installed with any IPSwitch product that
includes the IMail Server. This includes products such as its
Collaboration Suite packages.


iDefense has confirmed the existence of these vulnerabilities in IMail
Server 2006. The vulnerable executable used was version of


Disabling the IMAP service prevents exploitation of these
vulnerabilities. Consider enabling POP3 or webmail as an alternative to


Ipswitch Inc. has released version 2006.21 of its IMail product to
address these vulnerabilities. More information can be found at the
following URL.


A Mitre Corp. Common Vulnerabilities and Exposures (CVE) number has not
been assigned yet.


02/13/2007  Initial vendor notification
07/17/2007  Initial vendor response
07/18/2007  Coordinated public disclosure


The stack-based buffer overflow vulnerability was reported to iDefense
by Manuel Santamarina Suarez. The heap-based buffer overflow discoverer
wishes to remain anonymous.

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Disclaimer: The information in the advisory is believed to be accurate
at the time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS condition.
 There are no warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct,
indirect, or consequential loss or damage arising from use of, or
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