ia-5-10-dynamic-credential-binding

name	IA-5(10)_dynamic-credential-binding
description	Bind identities and authenticators dynamically using the following rules: [organization-defined].
category	authentication
version	5.2.0
author	cyberstrike-official
tags	["nist","sp800-53","rev5","ia-5-10","ia","enhancement"]
tech_stack	["aws","azure","active-directory","linux","windows"]
cwe_ids	["CWE-287"]
chains_with	["AU-16","IA-5"]
prerequisites	["IA-5"]
severity_boost	{"AU-16":"Chain with AU-16 for comprehensive security coverage","IA-5":"Chain with IA-5 for comprehensive security coverage"}

IA-5(10) Dynamic Credential Binding

Enhancement of: IA-5

High-Level Description

Family: Identification and Authentication (IA) Framework: NIST SP 800-53 Rev 5

Authentication requires some form of binding between an identity and the authenticator that is used to confirm the identity. In conventional approaches, binding is established by pre-provisioning both the identity and the authenticator to the system. For example, the binding between a username (i.e., identity) and a password (i.e., authenticator) is accomplished by provisioning the identity and authenticator as a pair in the system. New authentication techniques allow the binding between the identity and the authenticator to be implemented external to a system. For example, with smartcard credentials, the identity and authenticator are bound together on the smartcard. Using these credentials, systems can authenticate identities that have not been pre-provisioned, dynamically provisioning the identity after authentication. In these situations, organizations can anticipate the dynamic provisioning of identities. Pre-established trust relationships and mechanisms with appropriate authorities to validate identities and related credentials are essential.

What to Check

• Verify IA-5(10) Dynamic Credential Binding is documented in SSP
• Confirm control is operating effectively
• Review evidence of continuous monitoring for IA-5(10)
• Verify enhancement builds upon base control IA-5

How to Test

Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for IA-5(10) implementation details. Verify the organization has documented how this control is satisfied.

Step 2: Validate Implementation

# For cloud environments, use cloud-audit-mcp tools
# For on-premises, review system configurations directly

# Example: Check if account management policies exist
grep -r "account.management\|access.control" /etc/security/ 2>/dev/null

Step 3: Test Operating Effectiveness

Verify the control is actively functioning, not just documented. Check logs, configurations, and operational evidence.

Tools

Tool	Purpose	Usage
cloud-audit-mcp	Check authentication settings