Détail du CWE-908

The product uses or accesses a resource that has not been initialized.

When a resource has not been properly initialized, the product may behave unexpectedly. This may lead to a crash or invalid memory access, but the consequences vary depending on the type of resource and how it is used within the product.

Modes d'introduction

Implementation

Plateformes applicables

Langue

Class: Not Language-Specific (Undetermined)

Conséquences courantes

Exemples observés

Mesures d’atténuation potentielles

Phases : Implementation
Explicitly initialize the resource before use. If this is performed through an API function or standard procedure, follow all required steps.
Phases : Implementation
Pay close attention to complex conditionals that affect initialization, since some branches might not perform the initialization.
Phases : Implementation
Avoid race conditions (CWE-362) during initialization routines.
Phases : Build and Compilation
Run or compile the product with settings that generate warnings about uninitialized variables or data.

Méthodes de détection

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.)
Efficacité : High

Notes de cartographie des vulnérabilités

Justification : 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.
Commentaire : 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.

Références

REF-436

Exploiting Uninitialized Data
mercy.
https://web.archive.org/web/20070403193636/http://www.felinemenace.org/~mercy/papers/UBehavior/UBehavior.zip

Soumission

Modifications