🔒 ISO 27001:2022 Mapping

Overview

This document maps OWASP Top 10 Web Application Security Risks to ISO/IEC 27001:2022 Annex A controls. ISO 27001 is the international standard for information security management systems (ISMS).

ISO 27001:2022 Structure

ISO 27001:2022 Annex A contains 93 controls across 4 themes:

• Organizational controls (37 controls)
• People controls (8 controls)
• Physical controls (14 controls)
• Technological controls (34 controls)

Detailed Mapping

01. Broken Access Control

ISO 27001 Control	Control Name	Implementation
A.5.15	Access control	Implement role-based access control (RBAC)
A.5.16	Identity management	User provisioning and lifecycle management
A.5.18	Access rights	Principle of least privilege
A.8.2	Privileged access rights	Segregation of duties for privileged users
A.8.3	Information access restriction	Enforce access restrictions at all layers
A.8.5	Secure authentication	Multi-factor authentication where appropriate

Implementation Guidance:

• Define access control policy
• Implement RBAC with least privilege
• Regular access reviews (quarterly minimum)
• Automated access provisioning/de-provisioning
• Access logging and monitoring

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02. Cryptographic Failures

ISO 27001 Control	Control Name	Implementation
A.8.24	Use of cryptography	Strong encryption for data at rest and in transit
A.5.10	Acceptable use of information	Data classification policy
A.5.12	Classification of information	Identify sensitive data requiring encryption
A.5.14	Information transfer	Secure protocols (TLS 1.2+)
A.8.11	Data masking	Mask/tokenize sensitive data

Implementation Guidance:

• Use industry-standard encryption (AES-256, RSA-2048+)
• Implement TLS 1.2 or higher for data in transit
• Proper key management and rotation
• Data classification and handling procedures
• Encryption at application and storage layers

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03. Injection

ISO 27001 Control	Control Name	Implementation
A.8.3	Information access restriction	Input validation at all entry points
A.8.16	Monitoring activities	Monitor for injection attempts
A.8.23	Web filtering	Web application firewall (WAF)
A.8.25	Secure development lifecycle	Security in SDLC - code reviews
A.8.26	Application security requirements	Define security requirements early
A.8.28	Secure coding	Follow secure coding guidelines

Implementation Guidance:

• Use parameterized queries/prepared statements
• Input validation and sanitization
• Output encoding
• Principle of least privilege for database access
• Regular security testing and code review

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04. Insecure Design

ISO 27001 Control	Control Name	Implementation
A.5.8	Information security in project management	Security in all project phases
A.5.9	Inventory of information and assets	Asset identification for threat modeling
A.5.21	Managing information security in ICT supply chain	Secure supply chain design
A.8.25	Secure development lifecycle	Security requirements in design phase
A.8.26	Application security requirements	Document security requirements
A.8.29	Security testing in development	Security testing in all phases

Implementation Guidance:

• Threat modeling for all new systems
• Security architecture review
• Secure design principles (fail securely, defense in depth)
• Security requirements documentation
• Design review with security team

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05. Security Misconfiguration

ISO 27001 Control	Control Name	Implementation
A.5.23	Information security for use of cloud services	Secure cloud configuration
A.8.8	Management of technical vulnerabilities	Vulnerability management
A.8.9	Configuration management	Secure baseline configurations
A.8.12	Data leakage prevention	Prevent information disclosure
A.8.16	Monitoring activities	Monitor configuration changes
A.8.19	Installation of software	Controlled software installation

Implementation Guidance:

• Security hardening guides
• Configuration management database (CMDB)
• Automated configuration scanning
• Disable unnecessary features/services
• Regular configuration audits

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06. Vulnerable and Outdated Components

ISO 27001 Control	Control Name	Implementation
A.5.21	Managing information security in ICT supply chain	Supply chain security
A.8.8	Management of technical vulnerabilities	Patch management
A.8.19	Installation of software	Software inventory and updates
A.8.25	Secure development lifecycle	Dependency management in SDLC
A.8.31	Separation of development, test and production	Environment separation

Implementation Guidance:

• Maintain software bill of materials (SBOM)
• Automated vulnerability scanning
• Timely patching process
• Dependency update procedures
• Vendor security monitoring

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07. Identification and Authentication Failures

ISO 27001 Control	Control Name	Implementation
A.5.16	Identity management	Identity lifecycle management
A.5.17	Authentication information	Secure credential management
A.5.18	Access rights	Access rights management
A.8.2	Privileged access rights	Privileged account management
A.8.5	Secure authentication	MFA, strong passwords, biometrics

Implementation Guidance:

• Multi-factor authentication (MFA)
• Strong password policies
• Secure session management
• Account lockout mechanisms
• Password storage best practices (bcrypt, Argon2)

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08. Software and Data Integrity Failures

ISO 27001 Control	Control Name	Implementation
A.5.21	Managing information security in ICT supply chain	Supply chain integrity
A.8.25	Secure development lifecycle	Secure CI/CD pipeline
A.8.26	Application security requirements	Integrity requirements
A.8.31	Separation of development, test and production	Environment controls
A.8.32	Change management	Authorized changes only

Implementation Guidance:

• Code signing and verification
• Secure CI/CD pipeline
• Integrity monitoring
• Supply chain security controls
• Separation of duties in deployments

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09. Security Logging and Monitoring Failures

ISO 27001 Control	Control Name	Implementation
A.8.15	Logging	Comprehensive security logging
A.8.16	Monitoring activities	Continuous monitoring
A.5.24	Information security incident management planning	Incident detection and response
A.5.25	Assessment of information security events	Event analysis
A.5.26	Response to information security incidents	Incident response procedures
A.5.28	Collection of evidence	Evidence preservation

Implementation Guidance:

• Centralized logging (SIEM)
• Log retention policy (minimum 12 months)
• Real-time alerting
• Log integrity protection
• Incident response procedures

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10. Server-Side Request Forgery (SSRF)

ISO 27001 Control	Control Name	Implementation
A.8.3	Information access restriction	Network segmentation
A.8.20	Networks security	Firewall rules and network controls
A.8.21	Security of network services	Service-level security
A.8.23	Web filtering	URL filtering and validation
A.8.28	Secure coding	Input validation for URLs

Implementation Guidance:

• Network segmentation and isolation
• URL allowlisting/denylisting
• Disable unnecessary protocols
• Internal service protection
• Input validation for all URLs

Implementation Priority by Risk

Critical (Immediate Implementation)

1. A.8.5 - Secure authentication (affects: 07)
2. A.8.15 - Logging (affects: 09)
3. A.5.15 - Access control (affects: 01)
4. A.8.24 - Cryptography (affects: 02)

High (Within 3 months)

1. A.8.28 - Secure coding (affects: 03, 10)
2. A.8.8 - Vulnerability management (affects: 06)
3. A.8.25 - Secure development lifecycle (affects: 04, 08)
4. A.8.9 - Configuration management (affects: 05)

Medium (Within 6 months)

1. A.8.16 - Monitoring activities (affects: 09)
2. A.8.3 - Information access restriction (affects: 01, 03, 10)
3. A.8.26 - Application security requirements (affects: 04)
4. A.5.21 - ICT supply chain (affects: 06, 08)

Statement of Applicability (SoA)

For each control, document:

Control	Applicable?	Justification	Implementation Status	Owner
A.5.15	Yes	Access control required for all systems	Implemented	Security Team
A.8.24	Yes	Encryption required for sensitive data	Implemented	DevOps Team

Certification Timeline

Phase 1: Gap Analysis (Month 1-2)

• Assess current state
• Identify missing controls
• Create remediation plan

Phase 2: Implementation (Month 3-8)

• Implement required controls
• Document policies and procedures
• Train personnel

Phase 3: Internal Audit (Month 9-10)

• Verify control effectiveness
• Address findings
• Management review

Phase 4: Certification Audit (Month 11-12)

• Stage 1: Documentation review
• Stage 2: On-site assessment
• Receive certification

Best Practices

For ISMS Managers

1. Integrate OWASP Top 10 into risk assessment
2. Map controls to multiple vulnerabilities
3. Regular control effectiveness reviews
4. Update SoA when addressing new vulnerabilities

For Security Teams

1. Document control implementation thoroughly
2. Maintain evidence of control operation
3. Regular testing and validation
4. Continuous improvement mindset

For Development Teams

1. Understand relevant controls (A.8.25-A.8.29)
2. Follow secure coding guidelines
3. Participate in security testing
4. Document security decisions

References

• ISO/IEC 27001:2022
• ISO/IEC 27002:2022 - Implementation guidance
• OWASP Top 10 2021
• ISO 27001 Toolkit