Chi tiết CWE-456

The product does not initialize critical variables.

Các cách xuất hiện

Implementation

Nền tảng áp dụng

Ngôn ngữ

Lớp: Not Language-Specific (Undetermined)

Hậu quả phổ biến

Ví dụ đã quan sát

Các biện pháp giảm thiểu tiềm năng

Phases : Implementation
Ensure that critical variables are initialized before first use [REF-1485].
Phases : Requirements
Choose a language that is not susceptible to these issues.

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.

Ghi chú

This weakness is a major factor in a number of resultant weaknesses, especially in web applications that allow global variable initialization (such as PHP) with libraries that can be directly requested.
It is highly likely that a large number of resultant weaknesses have missing initialization as a primary factor, but researcher reports generally do not provide this level of detail.

Tài liệu tham khảo

REF-62

The Art of Software Security Assessment
Mark Dowd, John McDonald, Justin Schuh.

REF-961

Automated Source Code Reliability Measure (ASCRM)
Object Management Group (OMG).
http://www.omg.org/spec/ASCRM/1.0/

REF-962

Automated Source Code Security Measure (ASCSM)
Object Management Group (OMG).
http://www.omg.org/spec/ASCSM/1.0/

REF-1475

uninitialized variable vulnerability - Problem with boolean variables that are forcibly initialized to false by the Java compiler
windshock.
https://github.com/windshock/uninitialized-variable-vulnerability/blob/main/README.md

REF-1476

The Java Language Specification, Java SE 7 Edition
James Gosling, Bill Joy, Guy Steele, Gilad Bracha, Alex Buckley.
https://docs.oracle.com/javase/specs/jls/se7/html/jls-4.html#jls-4.12.5

REF-1485

D3FEND: D3-VI Variable Initialization
D3FEND.
https://d3fend.mitre.org/technique/d3f:VariableInitialization/

REF-1534

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

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