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ZDI-10-126: Ipswitch Imail Server List Mailer Reply-To Address Remote Code Execution Vulnerability

ZDI-10-126: Ipswitch Imail Server List Mailer Reply-To Address Remote Code Execution Vulnerability
July 15, 2010

-- CVSS:
10, (AV:N/AC:L/Au:N/C:C/I:C/A:C)

-- Affected Vendors:

-- Affected Products:
Ipswitch IMail

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 9999. 
For further product information on the TippingPoint IPS, visit:


-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of IPSwitch IMail List Mailer. Authentication
is not required to exploit this vulnerability. 

The specific flaw exists within imailsrv.exe which is invoked to handle
messages sent to the imailsrv. When a message contains multiple
"Reply-To:" headers the imailsrv.exe process concatenates these into a
single fixed length buffer on the stack. No validation of the data or
data length is done. A remote attacker can exploit this vulnerability to
execute arbitrary code under the context of the SYSTEM user.

-- Vendor Response:
Ipswitch states:
Update to the latest version 11.02

-- Disclosure Timeline:
2010-06-08 - Vulnerability reported to vendor
2010-07-15 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Anonymous

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