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<p class="MsoNormal"><span lang="DE" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Dear experts,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">I get the following error message from my IdP after the SP’s response to an IdP’s SLO request:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">server_error</span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">: SAMLResponse message MUST be signed when using an asynchronous
binding (POST or Redirect)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">This is how the SAML response looks like:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><samlp:LogoutResponse xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" Destination="https://test.auth0app.com/samlp/<client_id>/logout" ID="_f85ee87cf930ce3487d55786d29d67f6"
InResponseTo="_570ddd7e15a32ee12c51" IssueInstant="2024-08-13T13:56:51Z" Version="2.0" > <saml:Issuer xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion">https://testapp.example.org/SAMLTest/shibboleth</saml:Issuer> <samlp:Status> <samlp:StatusCode Value="urn:oasis:names:tc:SAML:2.0:status:Success"
/> </samlp:Status> </samlp:LogoutResponse><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">SAML requests from the SP are signed properly. Here is an excerpt from my shibboleth2.xml:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="FR" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> <ApplicationDefaults entityID=<a href="https://testapp.example.org/SAMLTest/shibboleth">https://testapp.example.org/SAMLTest/shibboleth</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">REMOTE_USER="eppn persistent-id targeted-id" signing="true"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> <Sessions lifetime="28800" timeout="3600" relayState="ss:mem"<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> checkAddress="false" handlerSSL="true" handlerURL="/SAMLTest/Shibboleth.sso" cookieProps="https"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> <SSO entityID="urn:test.auth0app.com"> SAML2 SAML1 </SSO><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> <!-- SAML and local-only logout. --><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">
</span><span lang="FR" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><Logout asynchronous="false">SAML2 Local</Logout><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="FR" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><!-- Extension service that generates "approximate" metadata based on SP configuration. --><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> <Handler type="MetadataGenerator" Location="/Metadata" signing="true"/><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> <!-- Status reporting service. --><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> <Handler type="Status" Location="/Status" acl="127.0.0.1 ::1"/><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> <!-- Session diagnostic service. --><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> <Handler type="Session" Location="/Session" showAttributeValues="false"/><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> <!-- JSON feed of discovery information. --><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> <Handler type="DiscoveryFeed" Location="/DiscoFeed"/><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"> </Sessions><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Can anyone advise how to configure the SP so that not only login requests, but also logout requests are signed?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Thanks and br,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Elmar<o:p></o:p></span></p>
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