Improper Handling of Missing Values
The product does not handle or incorrectly handles when a parameter, field, or argument name is specified, but the associated value is missing, i.e. it is empty, blank, or null.
The following examples help to illustrate the nature of this weakness and describe methods or techniques which can be used to mitigate the risk.
Note that the examples here are by no means exhaustive and any given weakness may have many subtle varieties, each of which may require different detection methods or runtime controls.
This Android application has registered to handle a URL when sent an intent:
The application assumes the URL will always be included in the intent. When the URL is not present, the call to getStringExtra() will return null, thus causing a null pointer exception when length() is called.
Weaknesses in this category are related to improper neutralization.
This category identifies Software Fault Patterns (SFPs) within the Incorrect Input Handling cluster.
This view (slice) covers all the elements in CWE.
This view (slice) lists weaknesses that can be introduced during implementation.