CWE-686: Function Call With Incorrect Argument Type
Learn about CWE-686 (Function Call With Incorrect Argument Type), its security impact, exploitation methods, and prevention guidelines.
What is Function Call With Incorrect Argument Type?
• Overview: CWE-686 refers to a vulnerability where a function is called with an argument of the incorrect data type. This issue arises when the expected data type of a function's parameter does not match the provided argument, potentially causing errors or unexpected behavior, particularly in languages that do not enforce strict type checking at compile-time.
• Exploitation Methods:
- Attackers can exploit this vulnerability by providing unexpected input that causes the program to behave incorrectly, potentially leading to crashes or execution of arbitrary code.
- Common attack patterns include type confusion, where the program misinterprets the data type of an input, leading to unintended operations or security bypasses.
• Security Impact:
- Direct consequences of successful exploitation can include application crashes, data corruption, or execution of unintended code paths.
- Potential cascading effects include broader system compromise if the error allows escalation of privileges or access to restricted resources.
- Business impact might involve data breaches, loss of customer trust, and financial penalties if sensitive data is exposed or the system's integrity is compromised.
• Prevention Guidelines:
- Specific code-level fixes include ensuring that functions are called with parameters of the correct type and adding explicit type checking where necessary.
- Security best practices involve using languages or frameworks that enforce strict type checking and regularly reviewing code to identify and correct type mismatches.
- Recommended tools and frameworks include static analysis tools that can detect type mismatches and integrated development environments (IDEs) with strong typing support and linting capabilities.
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Technical Details
Likelihood of Exploit: Not specified
Affected Languages: Not specified
Affected Technologies: Not specified