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Vulnerability Management

Scope​

This Vulnerability Management Policy applies to all systems, applications, infrastructure, and services owned or operated by Mavaro Systems LLC. This includes:

  • Production systems and infrastructure
  • Development and staging environments
  • Third-party applications and services
  • Mobile applications
  • API endpoints and services
  • Network infrastructure
  • Cloud services and resources
  • Employee and contractor devices accessing company systems

Vulnerability Discovery Sources​

Static Application Security Testing (SAST)​

  • Tools: SonarQube, Checkmarx, Veracode Static Analysis
  • Scope: Source code analysis for security vulnerabilities
  • Frequency: Continuous integration pipeline scanning
  • Responsibility: Development team with security oversight

Dynamic Application Security Testing (DAST)​

  • Tools: OWASP ZAP, Burp Suite Professional, Acunetix
  • Scope: Runtime application security testing
  • Frequency: Weekly automated scans, monthly comprehensive scans
  • Responsibility: Security team with development support

Dependency Scanning​

  • Tools: GitHub Dependabot, Snyk, WhiteSource
  • Scope: Third-party library and framework vulnerabilities
  • Frequency: Continuous monitoring with daily updates
  • Responsibility: Development team with automated alerts

Bug Bounty Program​

  • Platform: HackerOne or Bugcrowd
  • Scope: External discovery through responsible disclosure
  • Eligibility: All publicly accessible systems
  • Response: 3 business days for initial triage

Security Scanning​

  • Network: Nessus, OpenVAS for infrastructure
  • Web Applications: Automated web vulnerability scanning
  • Frequency: Monthly comprehensive scans
  • Responsibility: IT Operations with security oversight

Service Level Agreements (SLAs) by CVSS Score​

Critical Vulnerabilities (CVSS 9.0-10.0)​

  • Remediation Timeline: 24-72 hours
  • Temporary Mitigations: Required within 24 hours
  • Verification: Immediate testing post-patch
  • Reporting: Daily status updates to executive team

High Vulnerabilities (CVSS 7.0-8.9)​

  • Remediation Timeline: 7 calendar days
  • Temporary Mitigations: Required within 48 hours
  • Verification: Testing within 48 hours of patch
  • Reporting: Weekly status updates to department heads

Medium Vulnerabilities (CVSS 4.0-6.9)​

  • Remediation Timeline: 30 calendar days
  • Temporary Mitigations: Risk assessment required
  • Verification: Testing within 1 week of patch
  • Reporting: Bi-weekly status updates to team leads

Low Vulnerabilities (CVSS 0.1-3.9)​

  • Remediation Timeline: 90 calendar days
  • Temporary Mitigations: Not typically required
  • Verification: Testing with next scheduled deployment
  • Reporting: Monthly summary to team leads

Exception Process​

Exception Request Requirements​

  • Business justification for accepting risk
  • Technical feasibility assessment
  • Compensating controls implementation
  • Risk acceptance duration (maximum 1 year)
  • Executive approval for Critical/High vulnerabilities

Exception Approval Authority​

  • Low Risk: Team Lead approval (30 days max)
  • Medium Risk: Department Manager approval
  • High Risk: Vice President approval with security consultation
  • Critical Risk: C-Level executive approval with security consultation

Exception Documentation​

  • Vulnerability description and CVSS score
  • Business justification and risk assessment
  • Compensating controls and monitoring plan
  • Expiration date and re-evaluation requirements
  • Approval authority and timestamp

Patch Management Process​

Emergency Patching​

  • Trigger: Critical vulnerabilities with active exploitation
  • Process: Expedited deployment through emergency change process
  • Communication: Immediate notification to all stakeholders
  • Testing: Limited testing focused on functionality impact
  • Rollback: Pre-defined rollback procedures prepared

Standard Patching​

  • Testing: Development and staging environment validation
  • Deployment: Coordinated deployment during maintenance windows
  • Verification: Post-deployment vulnerability validation
  • Documentation: Change tracking and success confirmation

Rollback Procedures​

  • Pre-deployment: Backup systems and data
  • Rollback Criteria: System functionality degradation, data integrity issues
  • Communication: Immediate notification if rollback required
  • Post-incident: Review and update procedures

Penetration Testing Cadence​

External Penetration Testing​

  • Frequency: Annual comprehensive testing
  • Scope: Internet-facing applications and infrastructure
  • Provider: Independent third-party security firm
  • Deliverables: Detailed findings report with remediation guidance
  • Follow-up: Quarterly validation of critical findings

Internal Penetration Testing​

  • Frequency: Bi-annual testing
  • Scope: Internal network segments and critical systems
  • Provider: Independent third-party or internal red team
  • Deliverables: Technical findings with risk ratings
  • Follow-up: Validation testing for high-risk findings

Application Security Testing​

  • Frequency: Release-based testing for major applications
  • Scope: Authentication, authorization, input validation, data protection
  • Provider: Internal security team or external specialists
  • Deliverables: Security testing report with recommendations
  • Follow-up: Validation during next development cycle

Vulnerability Disclosure & Security.txt​

Responsible Disclosure Policy​

  • Contact: security@mavarosystems.com
  • Response Time: 48 hours for initial acknowledgment
  • Investigation: 5 business days for initial assessment
  • Communication: Regular updates throughout investigation
  • Recognition: Acknowledgment in security hall of fame (with permission)

Security.txt Implementation​

  • Location: /.well-known/security.txt
  • Contact Information: Dedicated security email address
  • Encryption: PGP public key for secure communications
  • Policy Link: URL to responsible disclosure policy
  • Updates: Maintained by security team

Security.txt Template​

Contact: mailto:security@mavarosystems.com
Encryption: https://keys.openpgp.org/search?q=security@mavarosystems.com
Acknowledgments: https://mavarosystems.com/security/hall-of-fame
Policy: https://mavarosystems.com/security/disclosure-policy
Canonical: https://mavarosystems.com/.well-known/security.txt
Expires: 2026-12-31T23:59:59.000Z

Tool Cadence & Maintenance​

Automated Scanning Tools​

  • Configuration Review: Monthly
  • Signature Updates: Automatic with manual verification weekly
  • Performance Tuning: Quarterly based on false positive rates
  • Coverage Analysis: Bi-annually to ensure complete coverage

Manual Security Reviews​

  • Code Reviews: Every pull request for security implications
  • Architecture Reviews: Quarterly for new features and services
  • Configuration Reviews: Monthly for infrastructure changes
  • Access Reviews: Quarterly for privileged accounts

Tool Integration​

  • CI/CD Pipeline: Automated security scanning integration
  • Ticketing System: Automatic ticket creation for findings
  • Communication: Integration with team communication channels
  • Metrics Dashboard: Real-time vulnerability tracking and reporting

Owner Roles & Responsibilities​

Chief Information Security Officer (CISO)​

  • Overall Responsibility: Vulnerability management program oversight
  • Key Duties: Policy approval, resource allocation, executive reporting
  • Decision Authority: High-risk vulnerability remediation decisions

Security Team​

  • Responsibility: Vulnerability scanning, analysis, and prioritization
  • Key Duties: Tool management, finding validation, remediation coordination
  • Reporting: Weekly vulnerability status reports

Development Teams​

  • Responsibility: Vulnerability remediation in code and applications
  • Key Duties: Patch development, testing, deployment
  • Collaboration: Regular communication with security team

IT Operations​

  • Responsibility: Infrastructure vulnerability remediation
  • Key Duties: System patching, configuration updates
  • Coordination: Work with development teams for system deployments

Quality Assurance​

  • Responsibility: Security testing validation
  • Key Duties: Regression testing, security control validation
  • Support: Security team collaboration for testing coordination

Evidence Expectations​

Remediation Documentation​

  • Patch Deployment: Screenshots or logs confirming deployment
  • Testing Results: Validation testing outcomes
  • Vulnerability Closure: Re-scan confirmation of remediation
  • Change Records: Documentation of all changes made

Compliance Evidence​

  • SLA Compliance: Tracking and reporting of remediation timelines
  • Exception Management: Documentation of all risk acceptances
  • Scan Coverage: Evidence of comprehensive vulnerability scanning
  • Training Records: Security awareness training completion

Audit Trail​

  • Discovery Timestamp: When vulnerability was first identified
  • Assignment History: Who was responsible for remediation
  • Communication Records: All stakeholder communications
  • Resolution Confirmation: Final validation and closure

Metrics & Reporting​

Key Performance Indicators​

  • Mean Time to Remediation: Average time to fix vulnerabilities
  • Vulnerability Discovery Rate: New vulnerabilities identified per period
  • Scan Coverage: Percentage of assets regularly scanned
  • SLA Compliance: Percentage of vulnerabilities remediated within SLA

Reporting Schedule​

  • Daily: Critical vulnerability status for executive team
  • Weekly: Comprehensive vulnerability report for security team
  • Monthly: Trend analysis and metrics dashboard for management
  • Quarterly: Program effectiveness review and improvement planning
  • Incident Response Plan
  • Security Policy
  • Access Control Policy
  • Patch Management Procedures
  • Security Awareness Training Program
  • Vendor Risk Management Policy

Document Owner: Chief Information Security Officer
Review Schedule: Quarterly
Last Updated: [Current Date]
Version: 1.0