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Threat Model Analysis for egametang/et

Threat: Cross-Site Scripting (XSS) via et Code

Description: An attacker injects malicious JavaScript code into the application. This code is executed in a user's browser due to a vulnerability within the et library itself, specifically in how et handles user-provided data or manipulates the DOM. The attacker could steal session cookies, redirect users to malicious websites, or deface the application. Impact: Account takeover, data theft, malware distribution, website defacement. Affected et component: Potentially any part of et that handles user input or DOM manipulation. Risk Severity: High Mitigation Strategies:

  • Conduct thorough code reviews of et's source code for XSS vulnerabilities.
  • Ensure et properly sanitizes or escapes user-provided data before rendering or DOM manipulation.
  • Implement Content Security Policy (CSP) to limit the impact of XSS.
  • Regularly update et to benefit from potential security patches.

Threat: Prototype Pollution in et

Description: An attacker leverages a vulnerability in et that allows them to modify JavaScript prototypes. By polluting prototypes, the attacker can inject properties into built-in JavaScript objects, potentially altering the application's behavior in unexpected and harmful ways. This could lead to privilege escalation, denial of service, or arbitrary code execution within the application using et. Impact: Application instability, privilege escalation, arbitrary code execution, denial of service. Affected et component: Parts of et that modify JavaScript prototypes (if any). Risk Severity: High Mitigation Strategies:

  • Review et's code for prototype modifications.
  • Avoid using libraries that aggressively modify prototypes if possible.
  • Implement strong input validation to prevent attackers from controlling data used in prototype modifications.
  • Monitor for unexpected application behavior that might indicate prototype pollution.

Threat: Logic Errors in et Leading to Security Issues

Description: Bugs or flaws in et's internal logic cause unexpected behavior that can be exploited by an attacker. These logic errors within et itself could lead to vulnerabilities such as bypassing access controls, information disclosure, or other security breaches within the context of the application using et. Impact: Information disclosure, unauthorized access, application malfunction. Affected et component: Any module or function within et containing logic errors. Risk Severity: High Mitigation Strategies:

  • Thoroughly test the application's integration with et to identify unexpected behavior.
  • Monitor application logs for errors and anomalies related to et.
  • Report any identified bugs to the et library maintainers.
  • Implement robust error handling and input validation in the application.

Threat: Developer-Introduced XSS via Misuse of et

Description: Developers incorrectly use et in a way that introduces XSS vulnerabilities. Even if et itself is secure, improper integration, such as rendering unsanitized user input directly within an et effect, can create an XSS vulnerability. An attacker can then inject malicious scripts that are executed due to the developer's misuse of et. Impact: Account takeover, data theft, malware distribution, website defacement. Affected et component: Application code that integrates with et. Risk Severity: High Mitigation Strategies:

  • Provide secure coding training to developers on using et safely.
  • Establish clear guidelines for handling user input and using et effects securely.
  • Conduct code reviews to identify and correct insecure usage of et.
  • Implement input validation and output encoding in the application, especially when using et to display dynamic content.