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What is IDOR?
IDOR, or Insecure Direct Object Reference, is a security flaw that allows attackers to access unauthorized data by manipulating references to objects. This vulnerability arises when an application fails to implement proper access controls, enabling users to retrieve or modify sensitive information they shouldn’t have access to.
For example, consider a URL like this:https://example.com/account.php?id=24
This request retrieves data for the user with ID 24. However, if an attacker changes the id parameter to 11 (https://example.com/account.php?id=11) and gains access to another user’s data, this is a classic IDOR vulnerability.
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Types of IDOR Vulnerabilities
IDOR vulnerabilities can manifest in various forms, each with its own implications:
- Blind IDOR: The attacker cannot directly see the results of their actions in the server response. For example, modifying another user’s private data without confirmation.
- Generic IDOR: The attacker can directly…
