Let’s move on to the 2nd Level section.
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In this section, there will be some sort of protection mechanisms to prevent PHP file uploads, which means, we can’t upload dot PHP file extension.
Developers, sometimes, add a blacklist for certain file extensions, which is considered harmful.
<?php
$files = @$_FILES["files"];
$info = new SplFileInfo($files["name"]);
$extension=($info->getExtension());
if ($files["name"] != '' && $extension !="php") {
$fullpath = $_REQUEST["path"] . $files["name"];
if (move_uploaded_file($files['tmp_name'], $fullpath)) {
echo "<a href='$fullpath'>OK-Click here!</a>";
}
}
echo '<form method=POST enctype="multipart/form-data" action=""><input type="file" name="files"><input type=submit value="Upload File"></form>';
?>
But, we can try to do this with other .php extensions.
- Supported PHP File Extension
- .php, .php2, .php3, .php4, .php5, .php6, .php7, .phps, .phps, .pht, .phtm, .phtml, .pgif, .shtml, .htaccess, .phar, .inc, .hphp, .ctp, .module
- Working in PHPv8:
- .php, .php4, .php5, .phtml, .module, .inc, .hphp, .ctp
As running the Apache2 service supports PHPv8, so rename the file to the .phtml file.
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Now, we will upload this file and see whether it is uploaded successfully or not.
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Let's try to access the file to see if PHP code execution is possible on the server.
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Once we click on "Upload File", open the uploaded link:
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Look at that! Our PHP code ran on the server successfully.
