CWE-233 (参数问题) — Vulnerability Class 20

CWE-233 represents a critical input validation weakness where software fails to adequately manage scenarios involving missing, undefined, or incorrect numbers of parameters and arguments. Attackers typically exploit this vulnerability by manipulating request structures, omitting expected fields, or injecting unexpected arguments to trigger unhandled exceptions, cause application crashes, or bypass security controls. Such exploitation can lead to denial of service, information disclosure, or further code execution if the system defaults to unsafe behaviors when encountering malformed input. To mitigate this risk, developers must implement rigorous input validation that explicitly checks for the presence, type, and count of all expected parameters before processing. Utilizing strict schema validation, default value assignments, and comprehensive error handling ensures the application gracefully rejects malformed requests, thereby maintaining stability and preventing attackers from leveraging parameter inconsistencies to compromise system integrity.