shell/SECURITY-REMEDIATION-PLAN.md

Security Remediation Plan

Priority: HIGH Target Completion: Next 30 days Responsible: Development Team

Overview

This document outlines the prioritized remediation plan for security issues identified in the comprehensive security review conducted on $(date '+%Y-%m-%d').

Status Summary

Priority	Issue Count	Status
CRITICAL	1	✅ RESOLVED
HIGH	3	🔄 IN PROGRESS
MEDIUM	5	📋 PLANNED
LOW	2	📋 BACKLOG

Priority 1: High-Risk Issues (Complete within 7 days)

1.1 Remote Code Execution via curl | bash

Risk Level: HIGH Impact: Arbitrary code execution Effort: 2-4 hours

Files to Fix:

• /home/acedanger/shell/setup/debian-patches.sh (Line 176)
• /home/acedanger/shell/setup/setup.sh (Lines 552, 564)

Remediation Steps:

1. For debian-patches.sh:

   # Replace line 176:
   # curl -s https://raw.githubusercontent.com/acedanger/shell/main/bootstrap.sh | bash
   
   # With secure download and execution:
   TEMP_BOOTSTRAP=$(mktemp)
   if curl -s https://raw.githubusercontent.com/acedanger/shell/main/bootstrap.sh -o "$TEMP_BOOTSTRAP"; then
       # Optional: verify checksum if available
       bash "$TEMP_BOOTSTRAP"
       rm -f "$TEMP_BOOTSTRAP"
   else
       echo "Failed to download bootstrap script"
       exit 1
   fi
   

2. For setup.sh (zoxide installation):

   # Replace line 552:
   # curl -sS https://raw.githubusercontent.com/ajeetdsouza/zoxide/main/install.sh | bash
   
   # With secure installation:
   TEMP_ZOXIDE=$(mktemp)
   if curl -sS https://raw.githubusercontent.com/ajeetdsouza/zoxide/main/install.sh -o "$TEMP_ZOXIDE"; then
       # Optional: verify known good checksum
       bash "$TEMP_ZOXIDE"
       rm -f "$TEMP_ZOXIDE"
   else
       echo "Failed to download zoxide installer"
       exit 1
   fi
   

3. For setup.sh (nvm installation):

   # Replace line 564:
   # curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.5/install.sh | bash
   
   # With secure installation:
   TEMP_NVM=$(mktemp)
   if curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.5/install.sh -o "$TEMP_NVM"; then
       # Optional: verify checksum against known good hash
       bash "$TEMP_NVM"
       rm -f "$TEMP_NVM"
   else
       echo "Failed to download nvm installer"
       exit 1
   fi
   

Testing Requirements:

• Test installation processes in isolated environment
• Verify all dependent functionality continues to work
• Run security scan to confirm fix

Acceptance Criteria:

• No direct piping of remote content to bash
• Downloaded scripts verified before execution
• Proper error handling implemented
• Security test passes

Priority 2: Medium-Risk Issues (Complete within 14 days)

2.1 Excessive Privilege Usage

Risk Level: MEDIUM-HIGH Impact: Privilege escalation, security boundary violations Effort: 4-6 hours

Files to Review:

• /home/acedanger/shell/setup/startup.sh (Lines 45, 46, 65, 66)
• Various Plex scripts with extensive sudo usage

Remediation Steps:

1. startup.sh permissions fix:

   # Replace chmod 777 with appropriate permissions
   # Line 46: sudo chmod -R 777 /logs
   sudo chmod -R 755 /logs
   
   # Line 65: sudo chmod -R 777 /logs
   sudo chmod -R 755 /logs
   
   # Ensure log files are 644
   find /logs -type f -exec sudo chmod 644 {} \;
   

2. Plex scripts sudo optimization:

   • Identify minimum required sudo operations
   • Group sudo operations to reduce frequency
   • Use service-specific users where possible
   • Document privilege requirements

Testing Requirements:

• Verify all functionality with reduced privileges
• Test in restricted environment
• Confirm no privilege escalation vulnerabilities

Acceptance Criteria:

• No usage of 777 permissions
• Minimal sudo usage documented
• Service-specific users implemented where possible
• Privilege requirements documented

2.2 Input Validation Enhancement

Risk Level: MEDIUM Impact: Path traversal, injection attacks Effort: 3-4 hours per script

Scripts Requiring Enhanced Validation:

• Docker deployment scripts
• User-facing setup scripts
• File operation utilities

Remediation Steps:

1. Implement input validation functions:

   # Add to common utilities or each script
   validate_path() {
       local path="$1"
       # Check for path traversal attempts
       if [[ "$path" =~ \.\./|^/etc|^/usr/bin|^/bin ]]; then
           echo "ERROR: Invalid path detected: $path"
           return 1
       fi
       return 0
   }
   
   validate_docker_image() {
       local image="$1"
       if [[ ! "$image" =~ ^[a-zA-Z0-9._/-]+:[a-zA-Z0-9._-]+$ ]]; then
           echo "ERROR: Invalid Docker image format: $image"
           return 1
       fi
       return 0
   }
   

2. Apply validation to all user inputs

3. Add bounds checking for numerical inputs

4. Sanitize file paths consistently

Priority 3: Maintenance and Monitoring (Complete within 30 days)

3.1 Automated Security Scanning

Effort: 2-3 hours setup + ongoing maintenance

Implementation Steps:

1. Add ShellCheck to CI/CD:

   # .github/workflows/security.yml
   name: Security Scan
   on: [push, pull_request]
   jobs:
     shellcheck:
       runs-on: ubuntu-latest
       steps:
         - uses: actions/checkout@v3
         - name: Run ShellCheck
           uses: ludeeus/action-shellcheck@master
           with:
             severity: warning
   

2. Weekly security script:

   #!/bin/bash
   # weekly-security-scan.sh
   find . -name "*.sh" -exec shellcheck {} \;
   # Additional security tools as needed
   

Acceptance Criteria:

• Automated ShellCheck on all commits
• Weekly security scan implemented
• Security issues tracked and resolved
• Documentation updated

3.2 Security Documentation

Effort: 4-6 hours

Deliverables:

• Security standards document
• Incident response procedures
• Security training materials
• Regular review schedule

Priority 4: Long-term Improvements (Complete within 60 days)

4.1 Security Architecture Review

Scope: Overall security architecture and practices Effort: 8-12 hours

Activities:

• Review all inter-script dependencies
• Analyze privilege requirements across the stack
• Design secure defaults and configurations
• Implement defense-in-depth strategies

4.2 Security Testing Framework

Scope: Automated security testing Effort: 12-16 hours

Deliverables:

• Automated vulnerability scanning
• Penetration testing procedures
• Security regression testing
• Performance impact assessment

Implementation Timeline

Week 1 (Priority 1)

• Day 1-2: Fix curl | bash patterns in setup scripts
• Day 3-4: Test and validate fixes
• Day 5: Security review and documentation update

Week 2 (Priority 2)

• Day 1-3: Address excessive privilege usage
• Day 4-5: Implement enhanced input validation
• Weekend: Testing and validation

Week 3-4 (Priority 3)

• Week 3: Implement automated security scanning
• Week 4: Complete security documentation

Week 5-8 (Priority 4)

• Ongoing: Security architecture review
• Ongoing: Security testing framework development

Resource Requirements

Development Time

• Priority 1: 8-12 hours total
• Priority 2: 16-20 hours total
• Priority 3: 12-16 hours total
• Priority 4: 20-28 hours total

Skills Required

• Shell scripting expertise
• Security best practices knowledge
• CI/CD pipeline configuration
• System administration

Tools Needed

• ShellCheck
• Git hooks for security scanning
• Testing environments (Docker)
• Security scanning tools

Success Metrics

Security Improvements

• 0 critical vulnerabilities
• <5 high-risk issues
• 100% of scripts pass security checks
• All curl | bash patterns eliminated

Process Improvements

• Automated security scanning implemented
• Security review process established
• Documentation complete and up-to-date
• Team trained on security practices

Compliance Measures

• Security checklist adopted
• Regular security reviews scheduled
• Incident response procedures tested
• Security metrics tracked and reported

Risk Management

Implementation Risks

• Functionality Impact: Thorough testing required for all changes
• Timeline Pressure: Prioritize critical fixes, defer non-critical items if needed
• Resource Availability: Ensure dedicated time for security work

Mitigation Strategies

• Implement changes in isolated branches
• Require peer review for all security changes
• Maintain rollback procedures for all modifications
• Test in staging environment before production deployment

Communication Plan

Stakeholder Updates

• Weekly: Progress updates to development team
• Bi-weekly: Status reports to management
• Monthly: Security metrics and trend analysis

Escalation Procedures

• Blocked Issues: Escalate within 24 hours
• New Critical Findings: Immediate escalation
• Timeline Risks: Weekly assessment and communication

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Document Owner: Security Team Last Updated: $(date '+%Y-%m-%d') Next Review: $(date -d '+30 days' '+%Y-%m-%d')

Approval Required: Development Team Lead, Security Officer Change Control: All modifications to this plan require documented approval