Détail du CWE-908

CWE-908

Use of Uninitialized Resource
Moyen
Incomplete
2013-02-21
00h00 +00:00
2023-06-29
00h00 +00:00
CWE Mitre.org
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Nom: Use of Uninitialized Resource

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

Description du CWE

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.

Informations générales

Modes d'introduction

Implementation

Plateformes applicables

Langue

Class: Not Language-Specific (Undetermined)

Conséquences courantes

Portée Impact Probabilité
ConfidentialityRead Memory, Read Application Data

Note: When reusing a resource such as memory or a program variable, the original contents of that resource may not be cleared before it is sent to an untrusted party.
AvailabilityDoS: Crash, Exit, or Restart

Note: The uninitialized resource may contain values that cause program flow to change in ways that the programmer did not intend.

Exemples observés

Références Description

CVE-2019-9805

Chain: Creation of the packet client occurs before initialization is complete (CWE-696) resulting in a read from uninitialized memory (CWE-908), causing memory corruption.

CVE-2008-4197

Use of uninitialized memory may allow code execution.

CVE-2008-2934

Free of an uninitialized pointer leads to crash and possible code execution.

CVE-2008-0063

Product does not clear memory contents when generating an error message, leading to information leak.

CVE-2008-0062

Lack of initialization triggers NULL pointer dereference or double-free.

CVE-2008-0081

Uninitialized variable leads to code execution in popular desktop application.

CVE-2008-3688

Chain: Uninitialized variable leads to infinite loop.

CVE-2008-3475

Chain: Improper initialization leads to memory corruption.

CVE-2005-1036

Chain: Bypass of access restrictions due to improper authorization (CWE-862) of a user results from an improperly initialized (CWE-909) I/O permission bitmap

CVE-2008-3597

Chain: game server can access player data structures before initialization has happened leading to NULL dereference

CVE-2009-2692

Chain: uninitialized function pointers can be dereferenced allowing code execution

CVE-2009-0949

Chain: improper initialization of memory can lead to NULL dereference

CVE-2009-3620

Chain: some unprivileged ioctls do not verify that a structure has been initialized before invocation, leading to NULL dereference

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.

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.
http://www.felinemenace.org/~mercy/papers/UBehavior/UBehavior.zip

Soumission

Nom Organisation Date Date de publication Version
CWE Content Team MITRE 2012-12-21 +00:00 2013-02-21 +00:00 2.4

Modifications

Nom Organisation Date Commentaire
CWE Content Team MITRE 2017-11-08 +00:00 updated Taxonomy_Mappings
CWE Content Team MITRE 2019-01-03 +00:00 updated Relationships
CWE Content Team MITRE 2020-02-24 +00:00 updated Description, Relationships
CWE Content Team MITRE 2020-08-20 +00:00 updated Relationships
CWE Content Team MITRE 2020-12-10 +00:00 updated Relationships
CWE Content Team MITRE 2021-03-15 +00:00 updated Demonstrative_Examples, Observed_Examples
CWE Content Team MITRE 2023-01-31 +00:00 updated Description, Potential_Mitigations
CWE Content Team MITRE 2023-04-27 +00:00 updated Relationships
CWE Content Team MITRE 2023-06-29 +00:00 updated Mapping_Notes