Unsanitized user input in HTTP request (SSRF)

• Rule ID: ruby_lang_http_url_using_user_input
• Languages: ruby
• Source: http_url_using_user_input.yml

Description

Applications should not connect to locations formed from user input. This rule checks for URLs containing user-supplied data.

Remediations

❌ Avoid using user input in HTTP URLs:

Faraday.get("https://#{params[:host]}')

✅ Use user input indirectly to form a URL:

host =
  case params[:host]
  when "option1"
    "api1.com"
  when "option2"
    "api2.com"
  end

Faraday.get("https://#{host}')

Associated CWE

• CWE-918: Server-Side Request Forgery (SSRF)

OWASP Top 10

• A10:2021 - Server-side Request Forgery (SSRF)

Configuration

To skip this rule during a scan, use the following flag

bearer scan /path/to/your-project/ --skip-rule=ruby_lang_http_url_using_user_input

To run only this rule during a scan, use the following flag

bearer scan /path/to/your-project/ --only-rule=ruby_lang_http_url_using_user_input