Which Web Attack Is a Server-Side Attack?


Heather Bennett

Web attacks can occur through various methods, Targeting different vulnerabilities within a web application. One type of attack is known as a server-side attack, which specifically Targets the server hosting the web application. In this article, we will explore some common server-side attacks and understand how they can affect a web application.

What is a Server-Side Attack?

A server-side attack refers to any malicious activity that Targets the server infrastructure or backend components of a web application. These attacks exploit vulnerabilities in the server’s software, protocols, or configurations to gain unauthorized access, manipulate data, or disrupt the normal functioning of the application.

Common Types of Server-Side Attacks

Let’s take a look at some common server-side attacks:

1. SQL Injection

SQL Injection is a prevalent server-side attack where an attacker injects malicious SQL code into user inputs that are not properly validated or sanitized by the application. This allows them to manipulate database queries and potentially gain unauthorized access to sensitive data or perform unauthorized actions.

2. Cross-Site Scripting (XSS)

Cross-Site Scripting (XSS) is another commonly seen server-side attack where an attacker injects malicious scripts into web pages viewed by other users.

This occurs when user inputs are not properly validated or encoded by the application. The injected scripts can steal sensitive information, modify page content, or perform other malicious activities.

3. Remote File Inclusion (RFI) and Local File Inclusion (LFI)

Remote File Inclusion (RFI) and Local File Inclusion (LFI) are attacks that exploit vulnerabilities in file inclusion mechanisms used by web applications. These attacks allow an attacker to include and execute malicious files on the server, potentially leading to unauthorized access, data leakage, or remote code execution.

4. Server-Side Request Forgery (SSRF)

Server-Side Request Forgery (SSRF) is an attack where an attacker tricks the server into making malicious requests to other internal or external resources. This can lead to unauthorized access to sensitive information, port scanning, or even remote code execution on vulnerable systems.

5. Remote Code Execution (RCE)

Remote Code Execution (RCE) attacks occur when an attacker is able to execute arbitrary code on the server remotely.

This can happen due to vulnerabilities in the server software or through other attack vectors like file uploads or insecure deserialization. Successful RCE attacks can give attackers full control over the server and potentially compromise the entire web application.

Preventing Server-Side Attacks

To protect against server-side attacks, it is essential to implement proper security measures:

  • Input Validation and Sanitization: Always validate and sanitize user inputs before processing them on the server side. This helps prevent attacks like SQL injection and XSS.
  • Secure Configuration: Follow secure configuration practices for your server software, frameworks, and libraries. Keep them up-to-date with patches and security updates.
  • Least Privilege Principle: Assign minimal privileges to different components of your web application, particularly when interacting with databases or external resources.
  • Secure File Inclusion: Implement strict file inclusion mechanisms that only allow access to authorized files and directories.
  • Input and Output Encoding: Use proper encoding techniques to prevent interpretation of user inputs as code or scripts.
  • Regular Security Audits: Perform regular security audits and penetration testing to identify and address any vulnerabilities in your web application.


Server-side attacks pose a significant threat to web applications and the underlying server infrastructure. Understanding the different types of server-side attacks and implementing appropriate security measures can help protect against these threats. By following best practices, staying updated with security patches, and conducting regular security assessments, web application owners can minimize the risk of falling victim to server-side attacks.

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