CWE-351 (不充分的类型区分) — Vulnerability Class 10

CWE-351, Insufficient Type Distinction, represents a logic flaw where software fails to adequately differentiate between distinct data types or object categories. This weakness typically arises when an application accepts user input without strict validation, allowing attackers to inject malicious payloads that exploit ambiguous type handling. For instance, an attacker might supply a string where an integer is expected, triggering unexpected behavior or bypassing security controls. Exploitation often leads to injection attacks, privilege escalation, or data corruption. To mitigate this risk, developers must enforce strict type checking and validation at every input boundary. Utilizing strongly typed languages, implementing robust schema validation, and avoiding dynamic type coercion are essential practices. By ensuring that data types are explicitly verified and handled correctly, developers can prevent attackers from manipulating the application’s logic through type confusion vulnerabilities.