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Strip out more inline javascript code. Encrypt backup codes and treat the backup codes attribute as a json array

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Dan Milne
2025-11-04 18:46:11 +11:00
parent bf104a9983
commit fb14ce032f
14 changed files with 336 additions and 248 deletions
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77
config/initializers/content_security_policy.rb
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@@ -1,77 +0,0 @@
# Be sure to restart your server when you modify this file.
# Define an application-wide content security policy.
# See the Securing Rails Applications Guide for more information:
# https://guides.rubyonrails.org/security.html#content-security-policy-header
Rails.application.configure do
config.content_security_policy do |policy|
# Default policy: only allow resources from same origin and HTTPS
policy.default_src :self, :https
# Scripts: strict security with nonce support for dynamic content
policy.script_src :self, :https, :strict_dynamic
# Styles: allow inline styles for CSS frameworks, but require HTTPS
policy.style_src :self, :https, :unsafe_inline
# Images: allow data URIs for inline images and HTTPS sources
policy.img_src :self, :https, :data
# Fonts: allow self-hosted and HTTPS fonts, plus data URIs
policy.font_src :self, :https, :data
# Media: allow self and HTTPS media sources
policy.media_src :self, :https
# Objects: block potentially dangerous plugins
policy.object_src :none
# Base URI: restrict base tag to same origin
policy.base_uri :self
# Form actions: only allow forms to submit to same origin
policy.form_action :self
# Frame ancestors: prevent clickjacking by disallowing framing
policy.frame_ancestors :none
# Frame sources: block iframes unless explicitly needed
policy.frame_src :none
# Connect sources: control where XHR/Fetch can connect
policy.connect_src :self, :https
# Manifest: only allow same-origin manifest files
policy.manifest_src :self
# Worker sources: control web worker origins
policy.worker_src :self, :https
# Report URI: send violation reports to our monitoring endpoint
if Rails.env.production?
policy.report_uri "/api/csp-violation-report"
end
end
# Generate session nonces for permitted inline scripts and styles
config.content_security_policy_nonce_generator = ->(request) {
# Use a secure random nonce instead of session ID for better security
SecureRandom.base64(16)
}
# Apply nonces to script and style directives
config.content_security_policy_nonce_directives = %w(script-src style-src)
# Automatically add `nonce` attributes to script/style tags
config.content_security_policy_nonce_auto = true
# Enforce CSP in production, but use report-only in development for debugging
if Rails.env.production?
# Enforce the policy in production
config.content_security_policy_report_only = false
else
# Report violations only in development (helps with debugging)
config.content_security_policy_report_only = true
end
end