Check Point Advisories

LEADTOOLS Raster Twain LtocxTwainu.dll Buffer Overflow

Vulnerability
Protection

Check Point Reference:	CPAI-2010-431
Date Published:	5 Oct 2010
Severity:	Medium
Last Updated:	Tuesday 05 October, 2010
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	LEADTOOLS Imaging SDK is a developers tool for adding advanced imaging features to various applications. TWAIN is standardized API that regulates communications between software applications and imaging devices. LEADTOOLS base Imaging SDK provides an ActiveX control that includes a Raster TWAIN library that resides in LtocxTwainu.dll. A buffer overflow vulnerability has been reported in LEADTOOLS Raster Twain ActiveX control LtocxTwainu.dll. The vulnerability is due to a boundary error while parsing the "AppName" parameter of the affected ActiveX control. A remote attacker can exploit this issue by enticing target users to visit a malicious web page. Successful exploitation of this vulnerability would result in a heap buffer overflow and allow for arbitrary code execution.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

In the IPS tab, click Protections and find the LEADTOOLS Raster Twain LtocxTwainu.dll Buffer Overflow protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Web Client Enforcement Violation.
Attack Information: LEADTOOLS Raster Twain LtocxTwainu.dll buffer overflow