Type of Attacks to Secure PHP Application


In this article we will take a look at the very important topic of PHP security. when you’re building a complete application you need to security code from attackers.  now there is a different type of attacks. We will list this attack one by one and describe the attack what they can do with your PHP application.

Along with that in the subsequent articles, we take a look at the solution from this attack.  this attacks can be Dissipate your application and steal your important data. There are thousands of the way where attackers can dissipate your PHP program but most of them Epitomize into four categories.

  1. Cross-site scripting attack.
  2. Data spoofing
  3. Invalid data
  4. Unauthorized access to a specific file

Now we will take a look at each of them one by one.

 

Cross-site Scripting Attack (XSS)

Cross-site scripting attack is also known as XSS. It is the most dangerous attack made on the web application. The main purpose and the main idea of this attack is to insert the malicious JavaScript code as an input form As part as normal data input process.

when the browser trying to display the data to the user JavaScript malicious code runs and deficit to your PHP program. Attack and insert any kind of data that will harmful to your web application. You need to secure your web application from this type of attack.

Let’s take an example of the cross-site scripting attack.

Sample.html

xsstest.php

What you need to do is just specify the JavaScript call in the input tag I’ll show you how to do that.

Enter the following code in the input tag and press submit button.

after executing you will see the alert message.  If you are using the latest browser then it couldn’t be because latest browser handles this attack itself.

Data Snoofing

Let’s talk about data Spoofing. so what is the data spoofing? Data pushing is the attack that attacker externally insert the fraudulent data into to PHP program. Suppose you have application that authenticates with the admin using the username and password after authenticating your admin you specify the if and else condition to check if he is authorised, admin or not so if you say admin is equal to one then we specify session if one to the admin or if not then the user does not permit to entering in the website.

And if the attacker knows the value of validating at me then we can easily attack your website. because the PHP session ID is located in the URL so we can easily identify the user ID.  if the Dekha get the ID of the admin that he can easily access to your add me data and easily destroyed your application

 

Invalid Data

As the topic says invalid data is just a result of a site visitor that don’t pay attention to the specific field and enter invalid data In the wrong form filled.  such as typing and address in the email form field, Touchpad entering invalid data in the email text field.

It is your job to validate this data and anticipate Invalid data And try to prevent it before it becomes the problem to your web application or your program.

There are two types of validation.

  1. Client-side validation
  2. Server-side validation

We are not taking any example of these two topics because it’s beyond the article but we shortly explain what is this topic is all about.

Client-side validation Is done using JavaScript. This type of validation does not require any kind of network connection because it runs on the client browser.

Server-side validation All about Validating the data from server side Technology. Before inserting your data into data In the data We use server-side validation.

 

Unauthorized Access 

By default, any .php files accessed via the web server are passed to the PHP server and processed, so if attackers try to access a .php file directly, they only see the output from the file, not the actual code. However, if an attacker manages to break into the DocumentRoot folder using some attack, your PHP code will be wide open. Your job as a PHP developer is to try to hide your code from these types of attacks.

One method of doing that is to utilize the include() function. In the previous article, we cover how to use the include() function to access PHP and HTML5 code located in a separate file from within a program file. The include() function isn’t bound by the web server DocumentRoot setting folder location; it can retrieve
data from anywhere on the server that it has read access to.

I hope you comprehend the importance of PHP secirity. In the next article we will cover the solution of to prevent your data from attack from the attackers.

That is all for this article, we will see you in the next one.

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