CyberShield

  Welcome to the 17th part of our Cybersecurity series! We have discussed many vulnerabilities like SQLi, XSS, and SSRF. But to find these bugs in the real world like a professional, you need to master one specific tool: Burp Suite . What is Burp Suite? Burp Suite is an integrated platform for performing security testing of web applications. It acts as an Interception Proxy between your browser and the target web server. This allows you to pause, inspect, and modify the data (HTTP requests) before it reaches the server. Key Components of Burp Suite To be a successful Bug Bounty hunter, you must understand these core tabs: Proxy: The heart of Burp. It lets you intercept and modify requests and responses. Repeater: Allows you to send a single HTTP request repeatedly with manual modifications to test how the server reacts. Intruder: Used for automated attacks like brute-forcing passwords or fuzzing for hidden directories. Decoder: A handy tool to quickly encode or decode data (B...

  Welcome back to our Cybersecurity series! In our 4th post, we discussed the basics of IDOR. Today, for our 15th post, we are leveling up to explore a more sophisticated side of Broken Access Control: Insecure API Exploitation . As modern web applications move towards a "Mobile-First" or "Single Page Application (SPA)" architecture, APIs (Application Programming Interfaces) have become the primary target for hackers. What is an Insecure API? An API is a bridge that allows different software components to communicate. If this bridge doesn't have a security guard (Authorization), an attacker can send malicious requests to the API and trick the server into leaking sensitive data or performing unauthorized actions. Common API Vulnerabilities BOLA (Broken Object Level Authorization): Similar to IDOR, but specifically targeting API endpoints like /api/v1/users/123 . BFLA (Broken Function Level Authorization): When a regular user can access administrative API functi...

Introduction In modern web and cloud environments, not every security issue comes from complex exploits. In fact, many real-world breaches happen due to simple configuration mistakes. This is known as Security Misconfiguration — a silent but extremely dangerous vulnerability. What is Security Misconfiguration? Security Misconfiguration occurs when a system, server, application, or cloud service is not properly configured in a secure way. Even if the application code is secure, incorrect settings can expose sensitive data or even full system access. Why Does It Happen? Security misconfiguration usually occurs due to: Default Settings Left Unchanged Using default credentials like: admin/admin root/root Unused Services Still Active Exposed endpoints such as: /admin /debug unused ports or APIs Verbose Error Output Technical errors revealing: file paths database structure system information Missing Security Headers Lack of protections like: HSTS Content Security Policy (CSP) Cloud Storage M...

  Introduction While testing web applications, not every vulnerability immediately leads to exploitation. However, small leaks of information can be just as dangerous. This is where Information Disclosure comes into play. It is one of the most common issues in modern web applications and often serves as the starting point for more serious attacks. What is Information Disclosure? Information Disclosure occurs when a web application unintentionally exposes sensitive or internal data to users. Although this data may not directly compromise the system, it provides valuable insights that attackers can use to plan further attacks. Types of Sensitive Information Exposed Web applications may leak different kinds of useful data: Server and Software Details Version numbers of servers or frameworks (e.g., Apache, PHP) that may have known vulnerabilities. Sensitive Files Files such as: Configuration files (.env, web.config) Backup files (.bak, .old) Source control directories (.git) Detailed E...

  Introduction In web security testing, even simple mistakes can lead to serious vulnerabilities. One such issue is Directory Traversal, also known as Path Traversal. This vulnerability allows attackers to break out of restricted directories and access sensitive files stored on the server. What is Directory Traversal? Directory Traversal is a vulnerability where user-controlled input is used to access files without proper validation. As a result, attackers can read files that should never be exposed, such as system configurations, application code, or user data. Understanding the Concept Many web applications load files dynamically. For example: https://example.com/view-image?filename=robot.png The server may internally look for the file like this: /var/www/images/robot.png If input validation is weak, an attacker can manipulate the request: ../../../../etc/passwd Each "../" moves one directory up. By chaining multiple traversals, the attacker can escape the intended folder a...