CWEweakness

CWE-570 Expression is Always False

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Abstraction
Base
Structure
Simple
Status
Draft
Languages
Not Language-Specific
CWE version
5.0

Description

The product contains an expression that will always evaluate to false.

Common consequences

• Other: Quality Degradation, Varies by Context

Potential mitigations

• [Implementation] Consider refactoring the code, or determine if the code is not including a condition that could cause the expression to become false.

Detection methods

• 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.)

Related

Can precede · CWE (1)

Child of · CWE (1)

  • CWE-710 Improper Adherence to Coding Standards weakness

Referenced by CVE · weakness (1)

  • CVE-2024-32633 An unsigned value can never be negative, so eMMC full disk test will always evaluate the same way. vulnerability