Contents
Are there any ways to exploit PHP code?
And, there are still ways to exploit. Let’s look inside your code. You may notice that it automatically add an extension .php at the end of path. So you should remove php in GET param. But what if the file you want to include does not have PHP extension? Then use %00 to terminate string, such as
What happens if you include a file in PHP?
If the web server has access to the requested file, any PHP code contained inside will be executed. Any non-PHP code in the file will be displayed in the user’s browser. Now that we understand how a file inclusion vulnerability can occur, we will exploit the vulnerabilities on the include.php page.
How is the include _ once keyword used in PHP?
The include_once keyword is used to embed PHP code from another file. If the file is not found, a warning is shown and the program continues to run. If the file was already included previously, this statement will not include it again. Read more about including files in our PHP Include Files Tutorial.
Can a PHP website be vulnerable to a file inclusion attack?
PHP websites that make use of include () function in an insecure way become vulnerable to file inclusion attacks. Before going ahead with file inclusion vulnerabilities, let us understand, what include () function does. A developer can include the content of one PHP file into another PHP file using include () function.
Is it possible to list content of remote PHP file?
However, allow_url_fopen is likely on (since it’s on by default), so my question is the following: is it possible to upload a PHP file or some script that lists the content of setupreset.php using this kind of exploit? If allow_url_include is off, you can’t execute remote code.
How to execute PHP code on a remote server?
Just visit http://localhost/include.php?page=php://input, with valid PHP code in request body, then you can execute any (allowed) function in remote server! Don’t forget the %00 to drop .php tail. Besides, PHP supports data:// URL scheme. You can directly put code in GET param!
How to list the contents of a PHP file?
The main goal is to list the contents of the setupreset PHP file, or download it somehow. If I navigate to this file: http://10.211.55.5/index.php?page=setupreset, it gets executed, but the PHP code is naturally not shown, due to the fact that it is parsed by the PHP interpreter.
Is it possible to see contents of PHP file?
It is not. The php file is getting executed because you call include, if you called readfile, file_get_contents or similar you could see the contents of the php file. Thanks for contributing an answer to Stack Overflow!