Skip to main content

WAF Bypass

Description​

We successfuly bypassed your Web Application Firewall (WAF).

Remediation​

Update your WAF configuration to prevent this bypass.

REST Specific​

Asp_net

Implement rigorous input validation, encode data on output, update the ASP.NET framework to the latest version, and configure the WAF to understand and protect against the latest web vulnerabilities and attack techniques.

Ruby_on_rails

Ensure that the Ruby on Rails application uses the latest version of the framework with all security patches applied. Implement strict input validation, employ least privilege principles, and configure the WAF with custom rules tailored to the application's traffic patterns to mitigate bypass attempts.

Next_js

To mitigate WAF bypass in a Next.js application, ensure that all user inputs are properly sanitized and validated both on the client and server side. Implement strict Content Security Policies (CSP), regularly update dependencies to patch known vulnerabilities, and consider using additional security headers like X-Frame-Options and X-XSS-Protection. Regularly review and update your WAF rules to cover new attack vectors and patterns.

Laravel

Ensure that the Laravel application uses the latest version of the framework, which includes updated security features. Implement strict input validation, use Laravel's built-in security functions to sanitize user input, and regularly update security packages. Additionally, configure the WAF with custom rules tailored to the application's traffic patterns to better detect and prevent bypass attempts.

Express_js

To mitigate WAF bypass in Express.js applications, ensure that you validate and sanitize all user inputs to prevent injection attacks. Implement strict content security policies, use the latest versions of Express.js and its middleware, and consider employing additional security modules like helmet to enhance HTTP headers security. Regularly update your WAF rules to protect against new vulnerabilities and perform thorough security testing to identify and fix potential bypass techniques.

Django

Ensure that Django's built-in protections are properly configured and up-to-date. Use the latest version of Django, as it includes the most recent security patches. Regularly update your WAF rules to cover new vulnerabilities and exploit techniques. Additionally, implement strict input validation, employ rate limiting, and consider using a more robust, customizable WAF solution if necessary.

Symfony

To mitigate WAF bypass in a Symfony application, ensure that all user inputs are properly validated and sanitized. Use Symfony's built-in security features such as input validation, output escaping, and CSRF protection. Regularly update the Symfony framework and all dependencies to their latest versions to address any security vulnerabilities. Additionally, configure your WAF with custom rules tailored to your application's logic and regularly audit and test WAF rules to ensure they are effective against evolving threats.

Spring_boot

To mitigate WAF bypass in a Spring Boot application, ensure that you are using the latest version of Spring Security with properly configured security rules. Enable strict transport security, input validation, output encoding, and CSRF protection. Regularly update your dependencies to patch known vulnerabilities and consider implementing additional layers of security such as rate limiting and intrusion detection systems.

Flask

To mitigate WAF bypass in a Flask application, ensure that you validate and sanitize all user inputs, implement strict content security policies, use up-to-date libraries, and regularly update your WAF rules to protect against new vulnerabilities and attack vectors.

Nuxt

Ensure that the Nuxt.js application strictly validates and sanitizes all user inputs to prevent injection attacks. Implement server-side checks and use the latest security plugins available for Nuxt.js to enhance WAF capabilities. Regularly update the Nuxt.js framework and all dependencies to patch known vulnerabilities.

Fastapi

To mitigate WAF bypass in FastAPI, ensure that you are using the latest version of FastAPI and any dependencies, as updates often include security patches. Implement strict input validation to reject unexpected or malicious data. Use secure coding practices, such as parameterized statements or ORMs for database interactions to prevent SQL injection. Regularly review and update your WAF rules to cover new vulnerabilities and exploit techniques. Additionally, consider adding rate limiting, CAPTCHA, and other layers of security to protect against automated attacks.

Configuration​

Identifier: configuration/waf_bypass

Examples​

Ignore this check​

checks:
  configuration/waf_bypass:
    skip: true

Score​

  • Escape Severity: MEDIUM

Compliance​

  • OWASP: API8:2023

  • pci: 6.5.1

  • gdpr: Article-32

  • soc2: CC6

  • psd2: Article-95

  • iso27001: A.13.1

  • nist: SP800-41

  • fedramp: SC-7

Classification​

  • CWE: 20

Score​

  • CVSS_VECTOR: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
  • CVSS_SCORE: 7.5