CWE-168 Detail

The product does not properly handle input in which an inconsistency exists between two or more special characters or reserved words.

An example of this problem would be if paired characters appear in the wrong order, or if the special characters are not properly nested.

Modes Of Introduction

Implementation

Piattaforme applicabili

Linguaggio

Class: Not Language-Specific (Undetermined)

Conseguenze comuni

Potential Mitigations

Developers should anticipate that inconsistent special elements will be injected/manipulated in the input vectors of their product. Use an appropriate combination of denylists and allowlists to ensure only valid, expected and appropriate input is processed by the system.
Phases : Implementation
Phases : Implementation
Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.

Note sulla mappatura delle vulnerabilità

Giustificazione : 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.
Commento : 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.

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