Description: Insecure Direct Object References (IDOR) are a type of access control vulnerability that occurs when an application provides direct access to objects, such as files or records, based on user-provided input. This means that an attacker can manipulate the input to access objects they should not be able to view or modify. This vulnerability arises from inadequate validation of user permissions before allowing access to resources. IDORs are particularly dangerous because they can allow an attacker to access sensitive information, such as data from other users, without the need for additional authentication. The nature of this vulnerability lies in the fact that web applications often use resource identifiers in URLs or forms, and if proper access controls are not implemented, a malicious user can simply change the identifier to access data that does not belong to them. Therefore, it is crucial for developers to implement robust security measures, such as access validation and authorization, to mitigate the risk of IDOR and protect the integrity of data in their applications.
