+Non-Modifiable Executable Programs

Non-Modifiable Executable Programs

Description

Mechanisms exist to utilize non-modifiable executable programs that load and execute the operating environment and applications from hardware-enforced, read-only media.

Possible Solutions & Considerations

Micro-Small Business (<10 staff) / BLS Firm Size Classes 1-2

∙ Note: Typically not required at this size

Small Business (10-49 staff) / BLS Firm Size Classes 3-4

∙ Secure Boot enabled on endpoints

Medium Business (50-249 staff) / BLS Firm Size Classes 5-6

∙ UEFI Secure Boot and firmware protections enabled by baseline
∙ Read-only/immutable OS images where supported

Large Business (250-999 staff) / BLS Firm Size Classes 7-8

∙ Secure Boot, measured boot and firmware integrity (e.g., Windows Defender System Guard, TPM attestation)
∙ Immutable infrastructure images

Enterprise (> 1,000 staff) / BLS Firm Size Class 9

∙ Enterprise hardware-rooted trust (Secure Boot, measured boot, remote attestation)
∙ Immutable OS/appliance images for critical systems
∙ Firmware integrity monitoring

SCR-CMM

Level 0 Not Performed

Practices are non-existent, based on the inability to demonstrate an implemented and operational capability. A reasonable person would conclude the control is not being performed.

Level 1 Performed Informally

Secure Engineering & Architecture (SEA) domain capabilities are ad hoc and inconsistent. Capability criteria associated with this control may include:
▪ Policies, standards & procedures associated with SEA domain capabilities provide limited coverage due to the depth and breadth of the existing documentation.
▪ Security engineering-related activities are decentralized (e.g., a localized/regionalized function) and uses non-standardized methods to implement secure, resilient and compliant practices.
▪ IT and/or cybersecurity personnel use an informal process to design, build and maintain secure, compliant and resilient solutions.

Level 2 Planned Tracked

Secure Engineering & Architecture (SEA) capabilities are requirements-driven, but are not standardized across the entity (e.g., local/regional level consistency). Capability criteria associated with this control reasonably expect the following criteria to exist:
▪ Policies and standards associated with SEA domain capabilities are formally documented and centrally-managed by the entity.
▪ Standardized Operating Procedures (SOP) associated with SEA domain capabilities are documented and maintained by process owners.
▪ IT and/or cybersecurity personnel work with business stakeholders and process owners to appropriately scope and reasonably implement cybersecurity and data protection controls associated with SEA domain capabilities to address applicable statutory, regulatory and/or contractual requirements for Technology Assets, Applications, Services and/or Data (TAASD).
▪ Secure engineering and architecture-related controls are primarily administrative and preventative in nature (e.g., policies, standards and procedures & guidelines).
▪ Secure engineering and architecture management may be a defined function (e.g., team or department) or assigned as an additional duty to existing IT and/or cybersecurity personnel.
▪ IT and/or cybersecurity personnel define entity-specific secure engineering practices to protect the Confidentiality, Integrity, Availability and Safety (CIAS) of the entity's TAASD.
▪ IT and/or cybersecurity personnel align secure engineering practices with the entity's broader IT architecture practices.
▪ IT and/or cybersecurity personnel use secure engineering practices to influence Secure Baseline Configurations (SBC).

Level 3 Well Defined

Secure Engineering & Architecture (SEA) capabilities are standardized across the entity for applicability to People, Processes, Technologies, Data and/or Facilities (PPTDF) to ensure consistency for Technology Assets, Applications, Services and/or Data (TAASD). Capability criteria associated with this control reasonably expect the following criteria to exist:
▪ Policies and standards associated with SEA domain capabilities are formally documented and centrally-managed by the entity's Governance, Risk & Compliance (GRC) team, or similar function.
▪ Standardized Operating Procedures (SOP) associated with SEA domain capabilities are well-documented and kept current by process owners.
▪ A cybersecurity engineering / architecture team, or similar function, is appropriately staffed and supported to implement and maintain RSK domain capabilities.
▪ Technology is leveraged to enhance the efficiency and accuracy of secure engineering management operations (e.g., project management solution).
▪ The entity's Governance, Risk & Compliance (GRC) team, or similar function, works with business stakeholders and process owners to appropriately scope and reasonably implement cybersecurity and data protection controls associated with SEA domain capabilities to address Minimum Compliance Requirements (MCR) (e.g., applicable statutory, regulatory and/or contractual requirements) and Discretionary Security Requirements (DSR) (e.g., entity-required controls).
▪ Secure Baseline Configurations (SBC) enforce the secure engineering principles on all applicable Technology Assets, Applications and/or Services (TAAS).
▪ An implemented and operational capability exists to utilize non-modifiable executable programs that load and execute the operating environment and applications from hardware-enforced, read-only media.

Level 4 Quantitatively Controlled

Secure Engineering & Architecture (SEA) capabilities, in addition to being standardized across the entity and centrally managed to ensure consistency across Technology Assets, Applications, Services and/or Data (TAASD), efforts are metrics driven to provide sufficient insight for decision makers to predict optimal performance, ensure continued operations and/or identify areas for improvement. Capability criteria associated with this control reasonably expect the following criteria to exist:
▪ Applicable SCR-CMM Level 3 (Well Defined) capabilities are implemented and operational.
▪ Metrics reporting includes quantitative analysis of Key Performance Indicators (KPIs).
▪ Metrics reporting includes quantitative analysis of Key Risk Indicators (KRIs).
▪ Scope of metrics, KPIs and KRIs covers organization-wide cybersecurity and data protection controls, including functions performed by third-parties.
▪ Organizational leadership maintains a formal process to objectively review and respond to metrics, KPIs and KRIs (e.g., monthly or quarterly review).
▪ Based on metrics analysis, process improvement recommendations are submitted for review and are handled in accordance with change control processes.
▪ Business and technical stakeholders are involved in reviewing and approving proposed changes to evolve capabilities.

Level 5 Continuously Improving

Utilize SCR-CMM Level 3 or Level 4 (if available) criteria definitions:
▪ There are no defined Level 5 criteria, since it is reasonable to assume a continuously-improving process is not necessary to operationalize this control.
▪ Level 5 capabilities should be considered “world-class” where the control builds on Level 4 capabilities, but are continuously improving through Artificial Intelligence (AI) and/or Machine Learning (ML) technologies.
▪ While it may be possible to develop responsive capabilities for this control through the use of AI and/or ML technologies, the criteria would be organization-specific to define.

1. Přehled

Název Standard

1.1 Odkazy

1.2 Identifikované požadavky

1.3 Související regulace

2. Identifikované požadavky

Požadavky
Zdroj Požadavek

3. Související regulace

Regulace
Zdroj Regulace

Propojené úkoly

Vazby
Typ vazby Úkol
is related to Annual
is related to relative Control Weighting = 01
is related to Technology
is related to Protect
is related to SCRM Focus Tier 3 TACTICAL
blocks Compromise Hardware Supply Chain
blocks Electron Applications
blocks Pre-OS Boot
blocks System Firmware
blocks Bootkit
blocks ROMMONkit
blocks TFTP Boot
blocks Abuse Elevation Control Mechanism
blocks Elevated Execution with Prompt
blocks Subvert Trust Controls
blocks Code Signing Policy Modification
blocks Modify System Image
blocks Patch System Image
blocks Downgrade System Image
blocks Escape to Host
blocks Unauthorized Modification / Loss of System Integrity
blocks System / Data Compromise (Technical Vector)
blocks Exposure from Unaddressed Vulnerabilities
blocks System / Service Compromise
blocks Incident Persistence / Recurrence
blocks Loss of Data Integrity
blocks Loss of Authenticity / Provenance
blocks Drought & Water Shortage
blocks Earthquakes
blocks Fire & Wildfires
blocks Floods
blocks Hurricanes & Tropical Storms
blocks Landslides & Debris Flow
blocks Pandemic (Disease) Outbreaks
blocks Severe Weather
blocks Space Weather
blocks Thunderstorms & Lightning
blocks Tornadoes
blocks Tsunamis
blocks Volcanoes
blocks Winter Storms & Extreme Cold
blocks Malicious Cyber Activity
blocks Utility Service Disruption
blocks Human Error
blocks Technical / Mechanical Failure
blocks Counterfeit / Non-Conforming Products
blocks Product Defect / Design Failure
blocks Infrastructure Failure / Degradation
is blocked by SEA-26 Non-Modifiable Executable Programs – Assessment Procedure
blocks SC-34 Non-modifiable Executable Programs
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