COMMON WEAKNESS ENUMERATIONDraft

CWE-456

Missing Initialization of a Variable

The product does not initialize critical variables, which causes the execution environment to use unexpected values.

Soyutlama

Variant

Yapı

Simple

Sömürü İhtimali

Medium

Problemi anla

Problem nedir?

The product does not initialize critical variables, which causes the execution environment to use unexpected values.

Kök neden

Problem nasıl ve ne zaman oluşur?

Yaşam döngüsü evresi

Implementation

Risk

Başarılı sömürü neye yol açar?

Unexpected StateQuality DegradationVaries by Context

Etkilenen güvenlik alanları: Integrity, Other

The uninitialized data may be invalid, causing logic errors within the program. In some cases, this could result in a security problem.

Savunma

Nasıl önlenir ve çözülür?

Implementation

Attack Surface Reduction

Detay
Ensure that critical variables are initialized before first use [REF-1485].

Requirements

Language Selection

Detay
Choose a language that is not susceptible to these issues.

Doğrulama

Nasıl tespit edilir?

Automated Static Analysis

High
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.)