ISC2 Governance, Risk and Compliance (CGRC) Practice Question

During a follow-up audit, the database team reports that a vendor patch has been applied to correct a previously non-compliant input-validation control. To confirm the deficiency is resolved and no new vulnerabilities were introduced, what is the assessor's best next step?

Re-execute the original control test on the patched system and evaluate adjacent controls for any unintended side effects.
Accept closure based on the system owner's signed memo since the patch comes from a trusted vendor.
Defer testing until the next annual assessment cycle and note the change in the audit plan.
Transfer the remaining risk to the software vendor and simply update the risk register.

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Answer Description

The assessor must obtain objective evidence that the control now operates effectively and that the change has not negatively affected related safeguards. Re-running the original test (e.g., input-validation checks) on the patched system and performing a brief impact analysis on adjoining controls provides direct verification. Simply accepting the system owner's attestation, deferring review, or transferring the risk does not meet due-diligence requirements because they do not demonstrate that the fix is effective or that it did not create additional weaknesses.

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What does input-validation control mean in this context?

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Why is re-executing the original control test important after applying a patch?

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What is an impact analysis on adjoining controls?

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Why is re-executing the original test necessary after applying a patch?

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What does 'evaluate adjacent controls' mean in this context?

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Why isn't accepting the system owner's memo sufficient to verify a patch's effectiveness?

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What is an input-validation control in a database?

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What does it mean to evaluate adjacent controls in a system?

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Why is objective evidence required in audits?

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ISC2 Governance, Risk and Compliance (CGRC)

Assessment/Audit of Security and Privacy Controls

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Settings & Objectives

Security and Privacy Governance, Risk Management, and Compliance Program

Scope of the System

Selection and Approval of Framework, Security, and Privacy Controls

Implementation of Security and Privacy Controls

Assessment/Audit of Security and Privacy Controls

System Compliance

Compliance Maintenance

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