Merge branch '5.6.x' into 5.7.x

Closes gh-12208

Author: jzheaux

saml2/saml2-service-provider/src/main/java/org/springframework/security/saml2/provider/service/authentication/logout/OpenSamlLogoutRequestValidator.java

@@ -128,7 +128,7 @@ private Consumer<Collection<Saml2Error>> validateIssuer(LogoutRequest request,
 			RelyingPartyRegistration registration) {
 		return (errors) -> {
 			if (request.getIssuer() == null) {
-				errors.add(new Saml2Error(Saml2ErrorCodes.INVALID_ISSUER, "Failed to find issuer in LogoutResponse"));
+				errors.add(new Saml2Error(Saml2ErrorCodes.INVALID_ISSUER, "Failed to find issuer in LogoutRequest"));
 				return;
 			}
 			String issuer = request.getIssuer().getValue();
@@ -144,7 +144,7 @@ private Consumer<Collection<Saml2Error>> validateDestination(LogoutRequest reque
 		return (errors) -> {
 			if (request.getDestination() == null) {
 				errors.add(new Saml2Error(Saml2ErrorCodes.INVALID_DESTINATION,
-						"Failed to find destination in LogoutResponse"));
+						"Failed to find destination in LogoutRequest"));
 				return;
 			}
 			String destination = request.getDestination();

saml2/saml2-service-provider/src/main/java/org/springframework/security/saml2/provider/service/web/authentication/logout/Saml2LogoutResponseFilter.java

@@ -114,7 +114,7 @@ protected void doFilterInternal(HttpServletRequest request, HttpServletResponse
 				logoutRequest.getRelyingPartyRegistrationId());
 		if (registration == null) {
 			this.logger
-					.trace("Did not process logout request since failed to find associated RelyingPartyRegistration");
+					.trace("Did not process logout response since failed to find associated RelyingPartyRegistration");
 			Saml2Error error = new Saml2Error(Saml2ErrorCodes.RELYING_PARTY_REGISTRATION_NOT_FOUND,
 					"Failed to find associated RelyingPartyRegistration");
 			response.sendError(HttpServletResponse.SC_BAD_REQUEST, error.toString());