CWE-563 상세 정보

The variable's value is assigned but never used, i.e., is a dead store. That is, after the assignment, the variable is either assigned another value or goes out of scope.

취약점 도입 방식

Implementation : The variable assignment without use may be vestigial from previous code changes or refactoring, but it is also possible that the unused variable points out a bug.

적용 가능한 플랫폼

언어

클래스: Not Language-Specific (Undetermined)

일반적인 결과

잠재적 완화 방법

Phases : Implementation
Remove unused variables from the code.

탐지 방법

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.)
효과성 : High

취약점 매핑 메모

근거 : 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.
댓글 : 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.

제출

수정 사항