catacumba.handlers.security — updcon/catacumba 2.2.2

content-type-options-headers clj

(content-type-options-headers context)

A chain handler that adds the X-Content-Type-Options header to the response. It prevent resources with invalid media types being loaded as stylesheets or scripts.

This does not have any option.

More information: http://msdn.microsoft.com/en-us/library/ie/gg622941(v=vs.85).aspx https://www.owasp.org/index.php/List_of_useful_HTTP_headers

csp-headers clj

(csp-headers)

(csp-headers options)

A chain handler that adds Content-Security-Policy header to the response.

Content Security Policy (CSP) is an added layer of security that helps to detect and mitigate certain types of attacks, including Cross Site Scripting (XSS) and data injection attacks. These attacks are used for everything from data theft to site defacement or distribution of malware.

Example:

(def cspconf {:default-src "'self' *.trusted.com"
              :img-src "*"
              :frame-ancestors "'none'"
              :reflected-xss "filter"})

(def app
  (ct/routes [[:prefix "web"
               [:all (csp-headers cspconf)]
               [:get your-handler]]]))

You can read more about that here: https://developer.mozilla.org/en-US/docs/Web/Security/CSP

csrf-protect clj

(csrf-protect)

(csrf-protect
  {:keys [on-error cookie-name field-name header-name]
   :or {header-name :x-csrftoken field-name :csrftoken cookie-name :csrftoken}})

A chain handler that provides csrf (Cross-site request forgery) protection. Also known as a one-click attack or session riding.

frame-options-headers clj

(frame-options-headers)

(frame-options-headers {:keys [policy] :or {policy :sameorigin}})

A chain handler that adds X-Frame-Options header to the response.

The X-Frame-Options HTTP response header can be used to indicate whether or not a browser should be allowed to render a page in a <frame>, <iframe> or <object> . Sites can use this to avoid clickjacking attacks, by ensuring that their content is not embedded into other sites.

Possible options:

• :policy: with two possible values :deny and :sameorigin

Warning: The frame-ancestors directive from the CSP Level 2 specification officially replaces this non-standard header.

hsts-headers clj

(hsts-headers)

(hsts-headers {:keys [max-age subdomains]
               :or {max-age 31536000 subdomains true}})

A chain handler that adds the Strict-Transport-Security header to the response. This accepts the following params:

• max-age: the max time in seconds for the policy (default: 1 year)
• subdomains: include subdomains or not (default true)

For more information, see the following rfc: https://tools.ietf.org/html/rfc6797