CWE-908 Detail

CWE-908

Use of Uninitialized Resource
MEDIUM
Incomplete
2013-02-21 00:00 +00:00
2023-06-29 00:00 +00:00

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Restez informé de toutes modifications pour un CWE spécifique.
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Use of Uninitialized Resource

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

Extended Description

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

Modes Of Introduction

Implementation

Applicable Platforms

Language

Class: Not Language-Specific (Undetermined)

Common Consequences

Scope Impact Likelihood
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.

Observed Examples

Reference Description
CVE-2019-9805Chain: 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-2008-4197Use of uninitialized memory may allow code execution.
CVE-2008-2934Free of an uninitialized pointer leads to crash and possible code execution.
CVE-2008-0063Product does not clear memory contents when generating an error message, leading to information leak.
CVE-2008-0062Lack of initialization triggers NULL pointer dereference or double-free.
CVE-2008-0081Uninitialized variable leads to code execution in popular desktop application.
CVE-2008-3688Chain: Uninitialized variable leads to infinite loop.
CVE-2008-3475Chain: Improper initialization leads to memory corruption.
CVE-2005-1036Chain: 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-2008-3597Chain: game server can access player data structures before initialization has happened leading to NULL dereference
CVE-2009-2692Chain: uninitialized function pointers can be dereferenced allowing code execution
CVE-2009-0949Chain: improper initialization of memory can lead to NULL dereference
CVE-2009-3620Chain: some unprivileged ioctls do not verify that a structure has been initialized before invocation, leading to NULL dereference

Potential Mitigations

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.

Vulnerability Mapping Notes

Rationale : 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.
Comments : 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.

References

REF-436

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

Submission

Name Organization Date Date Release Version
CWE Content Team MITRE 2012-12-21 +00:00 2013-02-21 +00:00 2.4

Modifications

Name Organization Date Comment
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
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