TPTI-07-15: Automated Solutions Modbus TCP Slave ActiveX Control Heap

Corruption Vulnerability

http://www.zerodayinitiative.com/advisories/TPTI-07-15.html

September 17, 2007

-- CVE ID:

CVE-2007-4827

-- Affected Vendor:

Automated Solutions

-- Affected Products:

Modbus RTU/ASCII/TCP Slave ActiveX Control

-- TippingPoint(TM) IPS Customer Protection:

TippingPoint IPS customers have been protected against this

vulnerability since September 7, 2007 by Digital Vaccine protection

filter ID 5598. For further product information on the TippingPoint IPS:

http://www.tippingpoint.com

-- Vulnerability Details:

This vulnerability allows remote attackers to execute arbitrary code on

systems with vulnerable installations of the Automated Solutions Modbus

TCP Slave ActiveX Control. Authentication is not required to exploit

this vulnerability.

The specific flaw exists within MiniHMI.exe which binds to TCP port

502. When processing malformed Modbus requests on this port a

controllable heap corruption can occur which may result in execution of

arbitrary code.

-- Vendor Response:

Automated Solutions has issued an update to correct this vulnerability.

More details can be found at:

http://www.automatedsolutions.com/pub/asmbslv/setup.exe

-- Disclosure Timeline:

2007.08.20 - Vulnerability reported to vendor

2007.09.07 - Digital Vaccine released to TippingPoint customers

2007.09.17 - Coordinated public release of advisory

-- Credit:

This vulnerability was discovered by Ganesh Devarajan,

TippingPoint DVLabs.

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