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threat-modeling.md

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Threat Model Analysis for octalmage/robotjs

Threat: Malicious System Command Execution

  • Threat: Malicious System Command Execution

    • Description: An attacker injects input that causes the application to use robotjs to simulate keystrokes that execute arbitrary system commands. This leverages robotjs's ability to mimic user input to open a terminal or command prompt and then type malicious commands, potentially leading to complete system takeover.
    • Impact: Complete system compromise. The attacker could gain full control, steal data, install malware, or cause data loss.
    • Affected robotjs Component: keyTap(), keyToggle(), typeString(), typeStringDelayed(). Any function simulating keyboard input.
    • Risk Severity: Critical
    • Mitigation Strategies:
      • Strict Input Validation: Implement rigorous input validation. Never directly pass user input to robotjs keyboard functions. Use a whitelist of allowed characters/commands.
      • Least Privilege: Run the application with minimum necessary privileges. Do not run as administrator.
      • Sandboxing/Containerization: Isolate the application to limit damage from a compromise.
      • Avoid Direct Command Execution: If possible, avoid using robotjs for direct system command execution. Use safer, controlled APIs.

Threat: Sensitive Data Exfiltration via Screen Capture

  • Threat: Sensitive Data Exfiltration via Screen Capture

    • Description: An attacker exploits a vulnerability or injects malicious input to make the application use robotjs to capture screenshots of the user's screen. These screenshots, potentially containing sensitive information like passwords or financial data, are then exfiltrated to the attacker. This directly uses robotjs's screen capture capabilities.
    • Impact: Exposure of sensitive user data, leading to identity theft, financial loss, or reputational damage.
    • Affected robotjs Component: screen.capture(), getPixelColor() (can be used to reconstruct screen content).
    • Risk Severity: High
    • Mitigation Strategies:
      • Minimize Screen Capture: Avoid screen.capture() unless absolutely essential.
      • User Consent and Notification: Obtain explicit user consent before capturing. Clearly inform the user. Provide a visual indicator.
      • Secure Data Transmission: Use strong encryption (e.g., HTTPS with TLS 1.3+) for transmission.
      • Secure Data Storage: Encrypt screenshots at rest.
      • Data Minimization: Capture only the necessary screen region.

Threat: Clipboard Hijacking and Data Theft

  • Threat: Clipboard Hijacking and Data Theft

    • Description: The attacker uses robotjs to either read the contents of the user's clipboard (stealing potentially sensitive data) or to overwrite the clipboard with malicious content (e.g., a phishing link or command). This directly exploits robotjs's clipboard access functions.
    • Impact: Exposure of sensitive data, potential execution of malicious code, or redirection to malicious sites.
    • Affected robotjs Component: getCopyText(), setCopyText().
    • Risk Severity: High
    • Mitigation Strategies:
      • Minimize Clipboard Access: Avoid using robotjs for clipboard interaction unless essential.
      • Sanitize Clipboard Data: If reading from the clipboard, sanitize the data before use.
      • Clear Clipboard After Use: Clear sensitive data from the clipboard immediately after use.
      • User Awareness: Educate users about clipboard hijacking risks.

Threat: Undetectable Keylogging

  • Threat: Undetectable Keylogging

    • Description: An attacker exploits a vulnerability to make the application use robotjs to simulate key presses and record all user keystrokes (including passwords and sensitive data) without the user's knowledge. The recorded keystrokes are then sent to the attacker. This leverages robotjs's ability to interact with the keyboard.
    • Impact: Exposure of all user keystrokes, leading to account compromise, identity theft, and financial loss.
    • Affected robotjs Component: keyTap(), keyToggle(), typeString(), typeStringDelayed().
    • Risk Severity: Critical
    • Mitigation Strategies:
      • Avoid Global Keystroke Capture: Do not use robotjs to capture all system keystrokes. Restrict monitoring to the application's own window and only when absolutely necessary.
      • User Consent and Notification: If any keystroke monitoring is required, obtain explicit, informed consent. Clearly explain what is captured and why. Provide a visual indicator.
      • Secure Input Fields: Encourage the use of secure input fields (e.g., password fields) to prevent interception.
      • Regular Security Audits: Conduct regular security audits and penetration testing.
      • Sandboxing: Isolate application.