CWE-375 Detail

Sending non-cloned mutable data as a return value may result in that data being altered or deleted by the calling function.

In situations where functions return references to mutable data, it is possible that the external code which called the function may make changes to the data sent. If this data was not previously cloned, the class will then be using modified data which may violate assumptions about its internal state.

Introductiemodi

Implementation

Toepasselijke platforms

Taal

Class: Object-Oriented (Undetermined)
Name: C (Undetermined)
Name: C++ (Undetermined)
Name: Java (Undetermined)
Name: C# (Undetermined)

Veelvoorkomende gevolgen

Mogelijke risicobeperkingen

Phases : Implementation
Declare returned data which should not be altered as constant or immutable.
Phases : Implementation
Clone all mutable data before returning references to it. This is the preferred mitigation. This way, regardless of what changes are made to the data, a valid copy is retained for use by the class.

Notities kwetsbaarheidsmapping

Rechtvaardiging : 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.
Opmerking : 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.

Referenties

REF-18

The CLASP Application Security Process
Secure Software, Inc..
https://cwe.mitre.org/documents/sources/TheCLASPApplicationSecurityProcess.pdf

Indiening

Wijzigingen