In reality, Local File Inclusion vulnerabilities in WordPress are typically valuable for accessing critical files like wp-config.php. The plugin was indeed vulnerable regarding the version, but our automation was unable to go further (it has now been improved □). The first alert that raised our automatization was a confirmed Local File Inclusion (LFI) in a WordPress plugin called “Media Library Assistant” :, the plugin has more than 70k active installation, not a bestseller but still interesting from an attacker perspective (to build a botnet, deploy ransomware.): The vulnerability described below is a perfect example of that proactivity: we promptly alerted all our customers who were using the vulnerable plugins, even before the fix for the vulnerability became available (in most cases, our clients either disabled the plugin or implemented a custom fix provided by us). By following the steps outlined in this tutorial, you can create a form that collects data from the user, validates it, and displays feedback to let them know that their data has been processed.As discussed in many of our articles, you already know that WordPress and related plugins are taking up a large space in the global attack surface we are monitoring for our customers.ĭiscovering always new methods and techniques to exploit potential flaws on these technologies allows us to be pro-active and try to maintain an advantage over potential attackers. Using the isset() function in PHP forms is a simple and effective way to ensure that the data being submitted is valid and secure. In the above code, using the echo statement to display feedback to the user after the form data has been processed. Step 4: Display feedbackįinally, you can display feedback to the user to let them know that their data has been processed. If both fields have a value, and can process the form data. To display an error message asking the user to fill out all fields. In the above code, using the empty() function to check if the username and password fields are empty. Now that you have our PHP script set up, we can add validation to ensure that the data being submitted is valid. If they have been set, then assign the values of those fields to variables that we can use to process the form data. In the above code, using the isset() function to check if the username and password fields have been set. Next, you need to create the PHP script that will process the form data. In the above code, create a simple form that collects a username and password from the user. ![]() ![]() ![]() The first step in using isset() is to create an HTML form. ![]()
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