Improper Neutralization

The product does not ensure or incorrectly ensures that structured messages or data are well-formed and that certain security properties are met before being read from an upstream component or sent to a downstream component.


If a message is malformed, it may cause the message to be incorrectly interpreted.

Neutralization is an abstract term for any technique that ensures that input (and output) conforms with expectations and is "safe." This can be done by:

checking that the input/output is already "safe" (e.g. validation)

transformation of the input/output to be "safe" using techniques such as filtering, encoding/decoding, escaping/unescaping, quoting/unquoting, or canonicalization

preventing the input/output from being directly provided by an attacker (e.g. "indirect selection" that maps externally-provided values to internally-controlled values)

preventing the input/output from being processed at all

This weakness typically applies in cases where the product prepares a control message that another process must act on, such as a command or query, and malicious input that was intended as data, can enter the control plane instead. However, this weakness also applies to more general cases where there are not always control implications.

See Also

Verify Message Integrity

Weaknesses in this category are related to the design and architecture of a system's data integrity components. Frequently these deal with ensuring integrity of data, ...

SFP Secondary Cluster: Tainted Input to Command

This category identifies Software Fault Patterns (SFPs) within the Tainted Input to Command cluster (SFP24).

Comprehensive CWE Dictionary

This view (slice) covers all the elements in CWE.

Research Concepts

This view is intended to facilitate research into weaknesses, including their inter-dependencies, and can be leveraged to systematically identify theoretical gaps with...

Weaknesses without Software Fault Patterns

CWE identifiers in this view are weaknesses that do not have associated Software Fault Patterns (SFPs), as covered by the CWE-888 view. As such, they represent gaps in...

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