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The ALG must behave in a predictable and documented manner that reflects organizational and system objectives when invalid inputs are received.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-205011SRG-NET-000380-ALG-000128SV-205011r831387_ruleCCI-002754medium
Description
A common vulnerability of network elements is unpredictable behavior when invalid inputs are received. This requirement guards against adverse or unintended system behavior caused by invalid inputs, where information system responses to the invalid input may be disruptive or cause the system to fail into an unsafe state. The behavior will be derived from the organizational and system requirements and includes, but is not limited to, notification of the appropriate personnel, creating an audit record, and rejecting invalid input. This requirement applies to gateways and firewalls that perform content inspection or have higher-layer proxy functions.
STIGDate
Application Layer Gateway Security Requirements Guide2026-05-23

Related Frameworks

1 mapping across 2 frameworks
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (13) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AU-12Audit Record Generation
1.00
AU-3(1)Additional Audit Information
1.00
CM-5(1)Automated Access Enforcement and Audit Records
1.00
CM-6Configuration Settings
1.00
CM-7Least Functionality
1.00
CM-7(2)Prevent Program Execution
1.00
SC-2Separation of System and User Functionality
1.00
SC-23(3)Unique System-generated Session Identifiers
1.00
SC-5Denial-of-service Protection
1.00
SC-8(2)Pre- and Post-transmission Handling
1.00

+3 more (top 10 by confidence shown)

CCI1 mapping
CCI-002754
1.00

Details

Check Text (C-205011r831387_chk)

Verify the ALG behaves in a predictable and documented manner that reflects organizational and system objectives when invalid inputs are received. If the ALG does not behave in a predictable and documented manner that reflects organizational and system objectives when invalid inputs are received, this is a finding.

Fix Text (F-5279r396407_fix)

Configure the ALG to behave in a predictable and documented manner that reflects organizational and system objectives when invalid inputs are received.