Logout fails : No active session(s) found matching LogoutRequest

Fri Mar 25 04:54:45 UTC 2022

Hi List,

Environment
IdP: 4.1.5
Tomcat: 9.0.55
RHEL: 8.5

We have an SP, “Replicon” which we have configured in their Authentication Provider the
• SLO HTTP Redirect URL with  https://idpdev.csu.edu.au/idp/profile/SAML2/Redirect/SLO

Upon logout I’m seeing this error in our idp-process.log

2022-03-25 15:12:31,602 - 10.9.246.156 - INFO [net.shibboleth.idp.saml.saml2.profile.impl.ProcessLogoutRequest:366] - Profile Action ProcessLogoutRequest: No active session(s) found matching LogoutRequest
2022-03-25 15:12:31,603 - 10.9.246.156 - WARN [org.opensaml.profile.action.impl.LogEvent:101] - A non-proceed event occurred while processing the request: SessionNotFound
2022-03-25 15:12:31,616 - 10.9.246.156 - INFO [Shibboleth-Audit.Logout:283] - 10.9.246.156|2022-03-25T04:12:31.589834Z|2022-03-25T04:12:31.616289Z||https://global.replicon.com/!/saml2/REDACTED||||||||true||Redirect|Redirect||Requester|urn:oasis:names:tc:SAML:2.0:status:UnknownPrincipal||Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:98.0) Gecko/20100101 Firefox/98.0

In the logout request the NameID is
• <saml:NameID xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion">User1</saml:NameID>

The nameID we send to them in the Response to the AuthnRequest is
• <saml2:NameID Format="urn:oasis:names:tc:SAML:2.0:nameid-format:persistent" NameQualifier=https://idpdev.csu.edu.au/idp/shibboleth SPNameQualifier=https://global.replicon.com/!/saml2/REDACTED>User1</saml2:NameID>

The have suggested we change the SLO HTTP Redirect URL value to
• https://idpdev.csu.edu.au/idp/profile/Logout?return=https://idpdev.csu.edu.au/idp/profile/Logout based on details found from this link http://antispam.csu.edu.au:32224/?dmVyPTEuMDAxJiYyNTAwZmFlNjY4MzJkMzE4Mj02MjNEMTFEQl8zNjc2M18xODYyXzEmJjI4ZTNjMDEzOGY5NGUzNz0xMzMzJiZ1cmw9aHR0cHMlM0ElMkYlMkZkb2NzJTJFc2hpYiUyRW5jc3UlMkVlZHUlMkZkb2NzJTJGbG9nb3V0JTJFaHRtbA==. This does work.

Looking further based on information obtained here https://shibboleth.atlassian.net/wiki/spaces/IDP4/pages/1265631719/LogoutConfiguration I’ve modified the URL to just
• https://idpdev.csu.edu.au/idp/profile/Logout

This works as well. Is it the best way?

Replicon support are saying there is nothing wrong with their Logout Request[1]

Trying to get them to send the NameID in this format is ignored.

<saml2:NameID xmlns:saml2="urn:oasis:names:tc:SAML:2.0:assertion"
              Format="urn:oasis:names:tc:SAML:2.0:nameid-format:transient"
              NameQualifier=https://idpdev.csu.edu.au/idp/shibboleth
              SPNameQualifier= https://global.replicon.com/!/saml2/REDACTED
              >User1 </saml2:NameID>

Regards

Gary

[1] LogoutRequest from Replicon

<samlp:LogoutRequest ID="_25b26cde-5be7-43a3-87a4-e48ddc5b8789"
                     Version="2.0"
                     IssueInstant="2022-03-25T04:12:31.21Z"
                     Destination=https://idpdev.csu.edu.au/idp/profile/SAML2/Redirect/SLO
                     xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol"
                     >
    <saml:Issuer xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion">https://global.replicon.com/!/saml2/REDACTED%3c/saml:Issuer>
    <Signature xmlns=http://www.w3.org/2000/09/xmldsig>
        <SignedInfo>
            <CanonicalizationMethod Algorithm=http://www.w3.org/2001/10/xml-exc-c14n />
            <SignatureMethod Algorithm=http://www.w3.org/2001/04/xmldsig-more#rsa-sha256 />
           <Reference URI="#_25b26cde-5be7-43a3-87a4-e48ddc5b8789">
                <Transforms>
                    <Transform Algorithm=http://www.w3.org/2000/09/xmldsig#enveloped-signature />
                    <Transform Algorithm=http://www.w3.org/2001/10/xml-exc-c14n>
                        <InclusiveNamespaces PrefixList="#default samlp saml ds xs xsi"
                                             xmlns=http://www.w3.org/2001/10/xml-exc-c14n
                                             />
                    </Transform>
                </Transforms>
                <DigestMethod Algorithm=http://www.w3.org/2001/04/xmlenc#sha256 />
                <DigestValue>u45t8I9MlPev68VVqY0kzXciKAiKiySXdQVL3ohrYsM=</DigestValue>
            </Reference>
        </SignedInfo>
        <SignatureValue>REDACTED</SignatureValue>
        <KeyInfo>
            <X509Data>
                <X509Certificate>REDACTED</X509Certificate>
            </X509Data>
        </KeyInfo>
    </Signature>
    <saml:NameID xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion">User1</saml:NameID>
</samlp:LogoutRequest>

Gary Lipscomb
Technical Officer, Systems | IT Infrastructure & Security | Division of Information Technology
Charles Sturt University

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