Original Post: How I Found a Simple IDOR Bug That Exposed Sensitive Data | by dra0x0 | Jun, 2024
The content describes Insecure Direct Object Reference (IDOR), a security vulnerability that occurs when an application provides direct access to objects based on user-supplied input without proper authentication or authorization checks. This allows users to access data or functions they should not be authorized to view by manipulating input values.
An example illustrates how IDOR can be exploited by manipulating URLs to access user profiles. If the application does not verify user access permissions, changing URL parameters can grant unauthorized access to other users’ data.
The article also shares a real-life scenario of discovering an IDOR bug in a mobile app, using tools like Burp Suite and an Android emulator. The author manipulated user ID parameters in requests, which allowed unauthorized access to user records, demonstrating potential security issues.
The key dangers of IDOR include unauthorized access, data leakage, and privilege escalation. The author emphasizes the importance of thorough security assessments and secure handling of user-sensitive data to mitigate these risks. After discovering the bug, the author contacted the app developers and shared tips for effective testing using Burp Suite.
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