17Application Logic Errors and Broken Access Control
Application logic errors and broken access control vulnerabilities are quite different from those we’ve discussed so far. Most of the vulnerabilities covered in previous chapters are caused by faulty input validation: they happen when polluted user input is processed without proper sanitization. These malicious inputs are syntactically different from normal user input and are designed to manipulate application logic and cause damage to the application or its users.
On the other hand, application logic errors and broken access control issues are often triggered by perfectly valid HTTP ...
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