Chi tiết CWE-242

The product calls a function that can never be guaranteed to work safely, regardless of how it is used.

Các cách xuất hiện

Implementation

Nền tảng áp dụng

Ngôn ngữ

Tên: C (Undetermined)
Tên: C++ (Undetermined)

Hậu quả phổ biến

Ví dụ đã quan sát

Các biện pháp giảm thiểu tiềm năng

Phases : Build and Compilation // Implementation
Identify a list of prohibited API functions and prohibit developers from using these functions, providing safer alternatives. In some cases, automatic code analysis tools or the compiler can be instructed to spot use of prohibited functions, such as the "banned.h" include file from Microsoft's SDL. [REF-554] [REF-1009] [REF-7]
Phases : Testing
Use grep or static analysis tools to spot usage of dangerous functions.

Phương pháp phát hiện

Automated Static Analysis

Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)
Hiệu quả : High

Ghi chú ánh xạ lỗ hổng

Lý do : This CWE entry is at the Base level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.
Bình luận : Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.

Tài liệu tham khảo

REF-6

Seven Pernicious Kingdoms: A Taxonomy of Software Security Errors
Katrina Tsipenyuk, Brian Chess, Gary McGraw.
https://cwe.mitre.org/documents/sources/SevenPerniciousKingdoms.pdf

REF-194

Herb Schildt's C++ Programming Cookbook
Herbert Schildt.

REF-7

Writing Secure Code
Michael Howard, David LeBlanc.
https://www.microsoftpressstore.com/store/writing-secure-code-9780735617223

REF-554

Security Development Lifecycle (SDL) Banned Function Calls
Michael Howard.
https://learn.microsoft.com/en-us/previous-versions/bb288454(v=msdn.10)?redirectedfrom=MSDN

REF-1009

Microsoft's Free Security Tools - banned.h
Tim Rains.
https://www.microsoft.com/en-us/security/blog/2012/08/30/microsofts-free-security-tools-banned-h/

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