[java-identity-provider] branch main updated: IDP-1974 - Blocking unsigned requests via profile configuration

Scott Cantor cantor.2 at osu.edu
Mon Aug 22 16:09:25 UTC 2022


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scantor pushed a commit to branch main
in repository java-identity-provider.

View the commit online:
http://git.shibboleth.net/view/?p=java-identity-provider.git;a=commit;h=d3296dd076147c5a5d733a9e12c27e455b124e18

The following commit(s) were added to refs/heads/main by this push:
     new d3296dd07 IDP-1974 - Blocking unsigned requests via profile configuration
d3296dd07 is described below

commit d3296dd076147c5a5d733a9e12c27e455b124e18
Author: Scott Cantor <cantor.2 at osu.edu>
AuthorDate: Mon Aug 22 12:08:30 2022 -0400

    IDP-1974 - Blocking unsigned requests via profile configuration
    
    https://shibboleth.atlassian.net/browse/IDP-1974
---
 .../shibboleth/idp/conf/relying-party-mddriven.xml |  8 +++
 .../shibboleth/idp/flows/saml/security-beans.xml   |  2 +-
 .../config/BrowserSSOProfileConfiguration.java     | 39 ++++++++++++
 .../SAML2AuthnRequestsSignedSecurityHandler.java   | 73 ++++++++++++++++++++++
 4 files changed, 121 insertions(+), 1 deletion(-)

diff --git a/idp-conf-impl/src/main/resources/net/shibboleth/idp/conf/relying-party-mddriven.xml b/idp-conf-impl/src/main/resources/net/shibboleth/idp/conf/relying-party-mddriven.xml
index d363c8d65..1e77ef1fc 100644
--- a/idp-conf-impl/src/main/resources/net/shibboleth/idp/conf/relying-party-mddriven.xml
+++ b/idp-conf-impl/src/main/resources/net/shibboleth/idp/conf/relying-party-mddriven.xml
@@ -431,6 +431,14 @@
                 <constructor-arg value="false" />
             </bean>
         </property>
+        <property name="requireSignedRequestsPredicate">
+            <bean class="net.shibboleth.utilities.java.support.logic.PredicateSupport" factory-method="fromFunction">
+                <constructor-arg>
+                    <bean parent="shibboleth.MDDrivenBoolProperty" p:propertyName="requireSignedRequests" />
+                </constructor-arg>
+                <constructor-arg value="false" />
+            </bean>
+        </property>
         <property name="authnContextTranslationStrategyLookupStrategy">
             <bean parent="shibboleth.MDDrivenBeanProperty" p:propertyName="authnContextTranslationStrategy"
                     p:propertyType="#{T(java.util.function.Function)}">
diff --git a/idp-conf-impl/src/main/resources/net/shibboleth/idp/flows/saml/security-beans.xml b/idp-conf-impl/src/main/resources/net/shibboleth/idp/flows/saml/security-beans.xml
index 2a2784ad3..e25b4e03f 100644
--- a/idp-conf-impl/src/main/resources/net/shibboleth/idp/flows/saml/security-beans.xml
+++ b/idp-conf-impl/src/main/resources/net/shibboleth/idp/flows/saml/security-beans.xml
@@ -196,7 +196,7 @@
             class="net.shibboleth.idp.profile.impl.WebFlowMessageHandlerAdaptor" scope="prototype"
             c:executionDirection="INBOUND">
         <constructor-arg name="messageHandler">
-            <bean class="org.opensaml.saml.saml2.binding.security.impl.SAML2AuthnRequestsSignedSecurityHandler" scope="prototype" />
+            <bean class="net.shibboleth.idp.saml.messaging.impl.SAML2AuthnRequestsSignedSecurityHandler" scope="prototype" />
         </constructor-arg>
         <property name="errorEvent">
             <util:constant static-field="org.opensaml.profile.action.EventIds.MESSAGE_AUTHN_ERROR" />
diff --git a/idp-saml-api/src/main/java/net/shibboleth/idp/saml/saml2/profile/config/BrowserSSOProfileConfiguration.java b/idp-saml-api/src/main/java/net/shibboleth/idp/saml/saml2/profile/config/BrowserSSOProfileConfiguration.java
index b600634c4..d3529ed35 100644
--- a/idp-saml-api/src/main/java/net/shibboleth/idp/saml/saml2/profile/config/BrowserSSOProfileConfiguration.java
+++ b/idp-saml-api/src/main/java/net/shibboleth/idp/saml/saml2/profile/config/BrowserSSOProfileConfiguration.java
@@ -94,6 +94,9 @@ public class BrowserSSOProfileConfiguration extends AbstractSAML2ArtifactAwarePr
      */
     @Nonnull private Predicate<ProfileRequestContext> suppressAuthenticatingAuthorityPredicate;
     
+    /** Whether to require requests be signed. */
+    @Nonnull private Predicate<ProfileRequestContext> requireSignedRequestsPredicate;
+    
     /** Lookup function to supply maximum session lifetime. */
     @Nonnull private Function<ProfileRequestContext,Duration> maximumSPSessionLifetimeLookupStrategy;
 
@@ -154,6 +157,7 @@ public class BrowserSSOProfileConfiguration extends AbstractSAML2ArtifactAwarePr
         skipEndpointValidationWhenSignedPredicate = Predicates.alwaysFalse();
         proxiedAuthnInstantPredicate = Predicates.alwaysTrue();
         suppressAuthenticatingAuthorityPredicate = Predicates.alwaysFalse();
+        requireSignedRequestsPredicate = Predicates.alwaysFalse();
         maximumSPSessionLifetimeLookupStrategy = FunctionSupport.constant(null);
         maximumTimeSinceAuthnLookupStrategy = FunctionSupport.constant(null);
         maximumTokenDelegationChainLengthLookupStrategy = FunctionSupport.constant(DEFAULT_DELEGATION_CHAIN_LENGTH);
@@ -436,6 +440,41 @@ public class BrowserSSOProfileConfiguration extends AbstractSAML2ArtifactAwarePr
         proxiedAuthnInstantPredicate = Constraint.isNotNull(condition, "Condition cannot be null");
     }
 
+    /**
+     * Get whether to require signed requests.
+     * 
+     * @param profileRequestContext current profile request context
+     * 
+     * @return whether to require signed requests
+     * 
+     * @since 4.3.0
+     */
+    public boolean isRequireSignedRequests(@Nullable final ProfileRequestContext profileRequestContext) {
+        return requireSignedRequestsPredicate.test(profileRequestContext);
+    }
+    
+    /**
+     * Set whether to require signed requests.
+     * 
+     * @param flag flag to set
+     * 
+     * @since 4.3.0
+     */
+    public void setRequireSignedRequests(final boolean flag) {
+        requireSignedRequestsPredicate = flag ? Predicates.alwaysTrue() : Predicates.alwaysFalse();
+    }
+    
+    /**
+     * Set a condition to determine whether to require signed requests.
+     * 
+     * @param condition condition to set
+     * 
+     * @since 4.3.0
+     */
+    public void setRequireSignedRequestsPredicate(@Nonnull final Predicate<ProfileRequestContext> condition) {
+        requireSignedRequestsPredicate = Constraint.isNotNull(condition, "Signed requests predicate cannot be null");
+    }
+    
     /**
      * Get the maximum amount of time the service provider should maintain a session for the user
      * based on the authentication assertion. A null or 0 is interpreted as an unlimited lifetime.
diff --git a/idp-saml-impl/src/main/java/net/shibboleth/idp/saml/messaging/impl/SAML2AuthnRequestsSignedSecurityHandler.java b/idp-saml-impl/src/main/java/net/shibboleth/idp/saml/messaging/impl/SAML2AuthnRequestsSignedSecurityHandler.java
new file mode 100644
index 000000000..ed1a3f775
--- /dev/null
+++ b/idp-saml-impl/src/main/java/net/shibboleth/idp/saml/messaging/impl/SAML2AuthnRequestsSignedSecurityHandler.java
@@ -0,0 +1,73 @@
+/*
+ * Licensed to the University Corporation for Advanced Internet Development,
+ * Inc. (UCAID) under one or more contributor license agreements.  See the
+ * NOTICE file distributed with this work for additional information regarding
+ * copyright ownership. The UCAID licenses this file to You under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file except in
+ * compliance with the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package net.shibboleth.idp.saml.messaging.impl;
+
+import java.util.function.Function;
+
+import javax.annotation.Nonnull;
+
+import org.opensaml.messaging.context.MessageContext;
+import org.opensaml.messaging.context.navigate.ChildContextLookup;
+import org.opensaml.profile.context.ProfileRequestContext;
+import org.opensaml.saml.saml2.metadata.SPSSODescriptor;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import net.shibboleth.idp.profile.context.RelyingPartyContext;
+import net.shibboleth.idp.saml.saml2.profile.config.BrowserSSOProfileConfiguration;
+
+/**
+ * Message handler implementation that enforces the AuthnRequestsSigned flag of 
+ * SAML 2 metadata element @{link {@link SPSSODescriptor} and/or a local profile
+ * configuration option.
+ */
+public class SAML2AuthnRequestsSignedSecurityHandler
+        extends org.opensaml.saml.saml2.binding.security.impl.SAML2AuthnRequestsSignedSecurityHandler{
+    
+    /** Logger. */
+    @Nonnull private final Logger log = LoggerFactory.getLogger(SAML2AuthnRequestsSignedSecurityHandler.class);
+
+    /** Lookup strategy for relying party context. */
+    @Nonnull private Function<ProfileRequestContext,RelyingPartyContext> relyingPartyContextLookupStrategy;
+    
+    /** Constructor. */
+    public SAML2AuthnRequestsSignedSecurityHandler() {
+        relyingPartyContextLookupStrategy = new ChildContextLookup<>(RelyingPartyContext.class);
+    }
+    
+    /** {@inheritDoc} */
+    @Override
+    protected boolean isRequestSigningRequired(@Nonnull final MessageContext messageContext) {
+        if (super.isRequestSigningRequired(messageContext)) {
+            return true;
+        }
+
+        if (messageContext.getParent() instanceof ProfileRequestContext) {
+            final RelyingPartyContext rpCtx = relyingPartyContextLookupStrategy.apply(
+                    (ProfileRequestContext) messageContext.getParent());
+            if (rpCtx != null && rpCtx.getProfileConfig() instanceof BrowserSSOProfileConfiguration) {
+                return ((BrowserSSOProfileConfiguration) rpCtx.getProfileConfig()).isRequireSignedRequests(
+                        (ProfileRequestContext) messageContext.getParent());
+            }
+        }
+        
+        log.warn("Unable to locate profile configuration in context tree");
+        return false;
+    }
+    
+}
\ No newline at end of file

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