Hi all,

I believe enabling the *script-src* Content Security Policy in Apache will 
break SAML.

https://content-security-policy.com/script-src/

"The execution of all JS event handlers from inline HTML markup are blocked 
default, onclick, onload, onmouseover, onsubmit, etc. You can get them to 
work via a 'unsafe-hashes' source list expression, however that is only 
supported on CSP Level 3 browsers."

The callback from CAS through to the SAML SP fails because it contains some 
of these handlers. I have yet to try it, but possibly the *unsafe-hashes* 
policy 
could be used. But, it is not the safe or recommended way. They recommend 
refactoring the offending code.

Page loaded 
from 
https://cas.server.com/idp/profile/SAML2/Callback?entityId=ENTITYID&ticket=TICKET


<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8" />
    </head>
    <body onload="document.forms[0].submit()">
        <noscript>
            <p>
                <strong>Note:</strong> Since your browser does not support 
JavaScript,
                you must press the Continue button once to proceed.
            </p>
        </noscript>
        
        <form 
action="https&#x3a;&#x2f;&#x2f;saml.sp.com&#x2f;Saml&#x2f;SSO" 
method="post">
            <div>
<input type="hidden" name="RelayState" value="RELAYSTATE;"/>                
                
<input type="hidden" name="SAMLResponse" 
value="SAMLRESPONSE"/>                
            </div>
            <noscript>
                <div>
                    <input type="submit" value="Continue"/>
                </div>
            </noscript>
        </form>
    </body>
</html>

-- 
- Website: https://apereo.github.io/cas
- Gitter Chatroom: https://gitter.im/apereo/cas
- List Guidelines: https://goo.gl/1VRrw7
- Contributions: https://goo.gl/mh7qDG
--- 
You received this message because you are subscribed to the Google Groups "CAS 
Community" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to [email protected].
To view this discussion on the web visit 
https://groups.google.com/a/apereo.org/d/msgid/cas-user/40ab7a36-8f57-41b0-afb1-ce790d9df43an%40apereo.org.

Reply via email to