Chi tiết CWE-543

The product uses the singleton pattern when creating a resource within a multithreaded environment.

Các cách xuất hiện

Implementation

Nền tảng áp dụng

Ngôn ngữ

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

Hậu quả phổ biến

Các biện pháp giảm thiểu tiềm năng

Phases : Architecture and Design
Use the Thread-Specific Storage Pattern. See References.
Phases : Implementation
Do not use member fields to store information in the Servlet. In multithreading environments, storing user data in Servlet member fields introduces a data access race condition.
Phases : Implementation
Avoid using the double-checked locking pattern in language versions that cannot guarantee thread safety. This pattern may be used to avoid the overhead of a synchronized call, but in certain versions of Java (for example), this has been shown to be unsafe because it still introduces a race condition (CWE-209).

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.)

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-474

Thread-Specifc Storage for C/C++
Douglas C. Schmidt, Timothy H. Harrison, Nat Pryce.
https://www.dre.vanderbilt.edu/~schmidt/PDF/TSS-pattern.pdf

REF-1534

Automated Technical Debt Measure, Version 2
OMG.
https://www.omg.org/spec/ATDM2/1.0/PDF

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