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Security: clrogon/PowerShell

Security

SECURITY.md

Security Policy

This document outlines the security measures implemented in this PowerShell repository and provides guidance for contributors and users.

Security Overview

This repository contains PowerShell scripts designed for system administration tasks. Security is a top priority, and all scripts have undergone comprehensive security auditing and remediation.

Implemented Security Measures

Authentication & Authorization

  • Credential Management: Proper use of PSCredential objects
  • Administrative Privilege Checks: Verification of admin rights before critical operations
  • Network Authentication: Optional credential support for network operations

Input Validation & Sanitization

  • Path Traversal Protection: All file paths validated for directory traversal attacks
  • WMI/CIM Injection Prevention: Sanitized queries using proper parameterization
  • XML Injection Prevention: XML entity escaping for all user inputs
  • Registry Injection Protection: Alphanumeric-only validation for registry operations
  • Command Injection Prevention: Blocking dangerous command patterns

Cryptography

  • Strong Hash Algorithms: Default to SHA256 (or stronger) instead of deprecated MD5
  • Hash Algorithm Validation: Restricted to approved secure algorithms

Privacy Protection

  • Optional User Logging: Username logging made opt-in for privacy
  • No Personal Data: Removed hardcoded personal information

Network Security

  • HTTPS Enforcement: All downloads validated for HTTPS protocol
  • URL Validation: Comprehensive format and protocol validation
  • Secure Remote Execution: Proper credential handling for remote operations

Error Handling

  • Active Security Checks: All security validations enabled (no commented exits)
  • Comprehensive Logging: Security events logged for audit trails
  • Graceful Failure: Secure behavior on validation failures

Security Guidelines for Users

Before Using Scripts

  1. Test in Non-Production Environment: Always test scripts in a controlled environment before production use
  2. Review Code: Understand what each script does before execution
  3. Verify Source: Only download scripts from trusted sources
  4. Use Digital Signatures: Verify script integrity using digital signatures when available

Best Practices

  1. Run with Minimum Privileges: Only use administrative privileges when necessary
  2. Secure Credentials: Use PSCredential objects instead of plain text
  3. Enable Logging: Keep logs for security auditing
  4. Regular Updates: Keep scripts updated with security patches
  5. Backup Data: Always backup before running scripts that modify systems

Security Guidelines for Contributors

Code Submission Requirements

  1. Input Validation: All user inputs must be validated and sanitized
  2. Path Safety: Prevent path traversal attacks
  3. Secure Defaults: Use secure algorithms and settings by default
  4. Error Handling: Implement proper error handling without exposing sensitive information
  5. No Hardcoded Secrets: Never commit passwords, API keys, or personal information

Security Review Checklist

  • Input validation for all user-provided data
  • Path traversal protection for file operations
  • Injection prevention (SQL, WMI, XML, command)
  • Proper credential handling
  • Strong cryptographic algorithms
  • Privacy-conscious logging
  • HTTPS enforcement for network operations
  • Error handling without information leakage
  • Administrative privilege checks
  • Documentation of security considerations

Prohibited Patterns

  1. Hardcoded Credentials: Never commit passwords or API keys
  2. Weak Cryptography: Avoid MD5, SHA1, or other deprecated algorithms
  3. Disabled Security Checks: Never comment out security validations
  4. Unvalidated Inputs: Always sanitize user input
  5. Path Traversal: Prevent .. sequences in paths
  6. Injection-Prone Operations: Avoid string concatenation in queries
  7. Information Disclosure: Don't log sensitive data

Reporting Security Issues

How to Report

If you discover a security vulnerability, please report it privately:

  1. Do NOT create a public issue
  2. DO send an email to the repository maintainer
  3. DO provide detailed information:
    • Steps to reproduce
    • Expected vs actual behavior
    • Potential impact
    • Suggested fix (if known)

Security Issue Handling

  1. Acknowledge: You will receive a response within 48 hours
  2. Assessment: The issue will be evaluated for severity and impact
  3. Fix Development: A fix will be developed and tested
  4. Disclosure: After the fix is deployed, the issue may be publicly disclosed with attribution (if requested)

Security Audit History

Initial Security Audit (January 2026)

Comprehensive audit performed covering:

  • Code injection vulnerabilities
  • Authentication and authorization
  • Cryptographic implementations
  • Input validation
  • Privacy and data protection
  • Network security
  • Error handling

Remediation completed for:

  • All critical vulnerabilities (5 issues)
  • All high-priority issues (3 issues)
  • All medium-priority issues (5 issues)

Status: ✅ All security issues resolved

Digital Signatures

Recommended Practice

All PowerShell scripts should be digitally signed before use in production environments. Digital signing ensures:

  • Authenticity: Verification of the script's source
  • Integrity: Confirmation that the script hasn't been modified
  • Trust: Control over which scripts can be executed

How to Sign Scripts

# Obtain a code signing certificate from a trusted CA
# Sign a script
Set-AuthenticodeSignature -FilePath "YourScript.ps1" -Certificate $cert

# Verify a signature
Get-AuthenticodeSignature "YourScript.ps1"

Execution Policy

Configure PowerShell execution policy to require signed scripts:

Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope LocalMachine

Compliance and Standards

This repository follows industry best practices:

  • OWASP Top 10: Protection against web application vulnerabilities
  • CIS Controls: Implementation of security controls
  • NIST Guidelines: Following NIST cybersecurity framework principles
  • Microsoft Security Guidelines: Adhering to PowerShell security recommendations

Additional Resources

License

This security policy is part of the project's security documentation and is subject to the same license as the main project.

Contact

For security-related questions or to report vulnerabilities, please contact the repository maintainer.


Last Updated: January 2026 Version: 1.0

There aren’t any published security advisories