Chi tiết CWE-495

The product has a method that is declared public, but returns a reference to a private data structure, which could then be modified in unexpected ways.

Các cách xuất hiện

Implementation

Nền tảng áp dụng

Ngôn ngữ

Lớp: Object-Oriented (Undetermined)
Tên: C (Undetermined)
Tên: C++ (Undetermined)
Tên: Java (Undetermined)
Tên: C# (Undetermined)

Hậu quả phổ biến

Các biện pháp giảm thiểu tiềm năng

Phases : Implementation
Declare the method private.
Phases : Implementation
Clone the member data and keep an unmodified version of the data private to the object.
Phases : Implementation
Use public setter methods that govern how a private member can be modified.

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 Variant 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

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