Software Usage Restrictions

To meet the software usage restrictions requirement (NIST SP 800-53 Rev 5 CM-10), you must (1) ensure all software and documentation are used per contracts and copyright law, (2) track quantity-licensed software to prevent unauthorized copying/distribution, and (3) control and document any peer-to-peer (P2P) file sharing technology. Build this into procurement, asset management, endpoint controls, and audit-ready evidence. ¹

Key takeaways:

• Put contract-and-copyright terms into enforceable controls: allowlisting, approved sources, and installation rights.
• Treat software license tracking as an operational control with owners, tooling, and reconciliation evidence.
• Block P2P by default; if any exception exists, document business need, scope, safeguards, and monitoring.

“Software usage restrictions” sounds like a legal or procurement topic, but auditors test it as a security and configuration management control. CM-10 is straightforward: software must be used according to license terms and copyright law, quantity-licensed software must be tracked to control copying and distribution, and peer-to-peer file sharing must be controlled and documented. ¹

For a Compliance Officer, CCO, or GRC lead, the fastest path is to convert those three clauses into operational gates: (1) a procurement-to-install workflow that prevents unapproved software and proves you had the rights to install it, (2) a license position process that reconciles entitlements to installations and flags over-deployment, and (3) technical prevention/detection for P2P with a tightly governed exception path.

This page gives requirement-level implementation guidance you can hand to IT, Security, Procurement, and Asset Management without rewriting. It focuses on what to do, what evidence to retain, and where teams commonly fail during FedRAMP Moderate readiness efforts aligned to NIST SP 800-53 Rev 5 CM-10. ¹

Regulatory text

Requirement (CM-10): “Use software and associated documentation in accordance with contract agreements and copyright laws; track the use of software and associated documentation protected by quantity licenses to control copying and distribution; and control and document the use of peer-to-peer file sharing technology.” ¹

What the operator must do (mapped to the text)

1. Use software per contract/copyright
   You need a controlled way to acquire, approve, install, and use software so the organization can show it had rights to install it, and users aren’t installing random downloads or reusing documentation improperly. ¹

2. Track quantity-licensed software to control copying/distribution
   If licenses are limited by count (seats, installs, named users), you must track entitlements and deployments and prevent or remediate overuse. ¹

3. Control and document P2P file sharing technology
   You must prevent unauthorized P2P tools and have explicit documentation and controls if any P2P capability is allowed (including how it’s monitored and constrained). ¹

Plain-English interpretation

Auditors expect you to prove three things: you know what software is running, you have the rights to run it, and you actively prevent high-risk distribution mechanisms (especially P2P). “Policy only” rarely passes because CM-10 calls for tracking and control that show up as system configurations, inventories, and records. ¹

Who it applies to

Entities: Cloud Service Providers and Federal Agencies operating under FedRAMP Moderate-aligned controls. ¹

Operational context (where it bites):

• End-user endpoints (workstations, VDI), where unapproved installs and P2P clients appear first.
• Servers and build pipelines, where engineers can introduce unlicensed or noncompliant components.
• SaaS subscriptions and browser extensions, which often bypass “software installation” controls unless explicitly governed.
• Third-party managed environments, where contracts may allow software use but you still need tracking and evidence.

What you actually need to do (step-by-step)

Step 1: Define “software” and “associated documentation” in scope

Write a short standard that states what counts: OS packages, applications, agents, container images, open-source packages, browser extensions, scripts, and vendor documentation distributed internally. Keep scope practical and enforceable. ¹

Output: Software Usage Restrictions Standard (or policy), with scope and roles.

Step 2: Put procurement and approval in front of installation

Implement an “approved software” process that starts with acquisition rights:

• Require proof of license/contract entitlement before installation.
• Require approval for new titles, new versions, and new distribution methods.
• Require security review for installers and sources (official repositories, signed packages). ¹

Operational tip: Make the approval decision binary: “approved catalog” vs “exception.” Avoid informal approvals in email threads.

Output: Approved software catalog and exception workflow.

Step 3: Enforce restrictions technically (not just procedurally)

Pick enforcement that matches your environment:

• Allowlisting / application control for endpoints and servers where feasible.
• Software install rights management (limit local admin; controlled elevation).
• Endpoint management baselines to block unknown installers, unsigned binaries, and unauthorized package managers where appropriate.
• Network controls to block common P2P ports/protocols and known P2P apps. ¹

Output: Configuration baselines, MDM/endpoint policies, and firewall/proxy rules tied to the requirement.

Step 4: Stand up a quantity license tracking process

CM-10 explicitly calls out “quantity licenses,” so you need an auditable license position:

• Create a list of software subject to quantity limits (by publisher and product).
• Record entitlements: purchase order, contract, subscription order, license grant.
• Record deployments: device installs, assigned users, active usage as available.
• Reconcile entitlements vs deployments and open remediation tickets when over. ¹

Owner: Asset management or IT operations, with Procurement and Compliance oversight.

Output: License entitlement register + deployment inventory + reconciliation record.

Step 5: Control and document P2P file sharing technology

Default posture: prohibit P2P. If any use case exists, document and constrain it:

• Identify what counts as P2P in your environment (clients, browser-based P2P, developer tools with P2P features).
• Block installation/execution for known P2P clients.
• Add detections: endpoint telemetry, proxy logs, DNS signals.
• If allowed, require a named business owner, scoped systems/users, time-bounded approval, and monitoring plan. ¹

Output: P2P control standard, detection rules, and exception approvals.

Step 6: Build audit-ready evidence into your operating rhythm

Don’t treat CM-10 as a once-a-year true-up. Create recurring checkpoints:

• Review “top new software requests” and exception trends.
• Sample endpoints/servers for unauthorized software findings and remediation time.
• Review license reconciliation exceptions and closure evidence.
• Review P2P detections and confirm blocks are effective. ¹

Where Daydream fits naturally: If you’re managing many third parties that supply software, SaaS, or managed services, Daydream can centralize evidence collection (contracts, license attestations, inventories), map artifacts to CM-10 language, and keep exception approvals and remediation tickets tied to the same control record so audits don’t become a scavenger hunt.

Required evidence and artifacts to retain

Keep evidence that proves each clause is operating:

Contract and copyright compliance

• Software usage restrictions policy/standard and user acceptable use language covering software and documentation. ¹
• Approved software catalog and approval criteria.
• Procurement records showing entitlements (contracts, order forms, license grants).
• Access controls proving who can install and how elevation is governed.

Quantity license tracking

• Inventory of installed software (endpoints, servers, images) and data source description. ¹
• License entitlement register for quantity-licensed products.
• Periodic reconciliation reports and remediation tickets/results.
• Exception approvals if temporary overage is allowed, with compensating controls and time bounds.

P2P control and documentation

• Policy that prohibits or governs P2P, including definitions and exception process. ¹
• Technical enforcement evidence (application control rules, firewall/proxy blocks).
• Detection/monitoring logs and incident/ticket records for any P2P findings.
• Approved exceptions with business justification, scope, monitoring, and end date.

Common exam/audit questions and hangups

Expect auditors to ask:

• “Show me your software inventory and how you know it’s complete.” ¹
• “Which products are quantity-licensed, and how do you prevent over-deployment?”
• “Provide evidence that installations are authorized per contract terms.”
• “Do you block P2P? Show the control and proof it’s enforced.”
• “How do you handle SaaS and browser extensions that users can self-enable?”

Hangups that slow teams down:

• Multiple inventories with conflicting counts (MDM vs EDR vs SCCM equivalents).
• Licenses purchased by teams on corporate cards with no central record.
• “Prohibited” P2P policy with no technical block or monitoring evidence.

Frequent implementation mistakes (and how to avoid them)

1. Mistake: Treating license tracking as a procurement spreadsheet.
   Fix: Tie entitlements to actual deployments and keep reconciliation records. CM-10 explicitly requires tracking to control copying/distribution. ¹

2. Mistake: Ignoring “associated documentation.”
   Fix: Include documentation redistribution rules in acceptable use and in contract intake for third-party documentation.

3. Mistake: Blocking BitTorrent but missing “P2P-like” channels.
   Fix: Define P2P broadly in your standard and base detection on behavior plus known apps.

4. Mistake: Exceptions without boundaries.
   Fix: Every exception needs owner, scope, safeguards, monitoring, and a defined end condition.

Enforcement context and risk implications

No public enforcement cases were provided in the source catalog for this requirement, so treat this as an auditability and contractual compliance risk area rather than a case-law-driven topic. Operationally, CM-10 failures most often surface as: unapproved software on endpoints/servers, inability to prove licensing rights, and uncontrolled file sharing paths that increase exfiltration and malware exposure. ¹

Practical execution plan (30/60/90)

First 30 days (Immediate stabilization)

• Assign owners: Procurement (entitlements), IT Ops (inventory), Security (endpoint/network enforcement), Compliance (evidence pack).
• Publish a short software usage restrictions standard with P2P default prohibition and an exception workflow. ¹
• Freeze new software intake to an approved-request path (even if temporary and manual).

Days 31–60 (Operational controls)

• Stand up an approved software catalog and “source of truth” for entitlements.
• Enable technical controls: restrict installs, implement allowlisting where feasible, and deploy baseline blocks for known P2P clients. ¹
• Identify quantity-licensed products and complete first entitlement vs deployment reconciliation; open remediation tickets.

Days 61–90 (Audit-ready and repeatable)

• Convert reconciliations into a recurring cadence with sign-offs and ticket closure evidence.
• Run a targeted audit sample: pick systems, prove installed software is approved, prove entitlements, show exceptions and closures.
• Document the P2P monitoring approach and test detection by validating logs/alerts and response workflow. ¹

Frequently Asked Questions

Does CM-10 apply to SaaS subscriptions and browser extensions?

If users can add functionality that creates licensing and data movement risk, treat it as software in scope and govern it through approval, inventory, and entitlement records. CM-10’s core test is whether use aligns with contract terms and is tracked where quantity limits exist. ¹

What counts as “quantity-licensed” software?

Any software where your right to use is limited by a count (devices, users, cores, seats, or similar). Track entitlements and deployments so you can show you control copying and distribution. ¹

Do we have to block all peer-to-peer technology?

CM-10 requires you to control and document P2P. Most teams prohibit it by default and allow tightly scoped exceptions with monitoring and technical constraints. ¹

How do we prove “in accordance with contract agreements” during an audit?

Keep the contract/order form that grants usage rights and tie it to the approved software record and deployment inventory. Auditors want traceability from entitlement to installation. ¹

Our inventory tools disagree. What will auditors accept?

Pick a primary system of record, document its coverage limits, and show compensating checks for gaps. Then show a consistent reconciliation process and remediation of discrepancies. ¹

Can we meet CM-10 with policy only?

CM-10 includes “track” and “control and document,” which auditors commonly test through actual inventories, enforcement configurations, and reconciliation records. Policy is necessary, but it won’t carry the control without operational evidence. ¹

Footnotes

1. NIST Special Publication 800-53 Revision 5