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[KEYCLOAK-18417] Skip SAML 2.0 AttributeValue with user-defined xsi types

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Sebastian Kanzow 2021-06-10 17:47:47 +02:00 committed by Hynek Mlnařík
parent e44a7af0e4
commit a412bb7b99
2 changed files with 60 additions and 2 deletions
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7
saml-core/src/main/java/org/keycloak/saml/processing/core/parsers/saml/assertion/SAMLAttributeValueParser.java
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@ -36,7 +36,7 @@ import javax.xml.stream.events.StartElement;
import javax.xml.stream.events.XMLEvent;
/**
*
*
*/
public class SAMLAttributeValueParser implements StaxParser {
@ -105,7 +105,10 @@ public class SAMLAttributeValueParser implements StaxParser {
return StaxParserUtil.getElementText(xmlEventReader);
}
throw logger.parserUnknownXSI(typeValue);
// KEYCLOAK-18417: Simply ignore unknown types
logger.debug("Skipping attribute value of unsupported type " + typeValue);
StaxParserUtil.bypassElementBlock(xmlEventReader);
return null;
}
public static String parseAnyTypeAsString(XMLEventReader xmlEventReader) throws ParsingException {

55
saml-core/src/test/java/org/keycloak/saml/processing/core/parsers/saml/SAMLAttributeValueParserTest.java Normal file
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@ -0,0 +1,55 @@
package org.keycloak.saml.processing.core.parsers.saml;
import org.junit.Assert;
import org.junit.Test;
import org.keycloak.saml.common.parsers.AbstractParser;
import org.keycloak.saml.processing.core.parsers.saml.assertion.SAMLAttributeValueParser;
import javax.xml.stream.XMLEventReader;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
public class SAMLAttributeValueParserTest {
private static final String XML_DOC =
"<saml2:Attribute xmlns:saml2=\"urn:oasis:names:tc:SAML:2.0:assertion\"\n>"
+ " <saml2:AttributeValue xmlns:myCustomType=\"http://www.whatever.de/schema/myCustomType/saml/extensions\"\n"
+ " xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:type=\"myCustomType:Something\">\n"
+ " Some Text\n"
+ " </saml2:AttributeValue>\n"
+ "</saml2:Attribute>";
private static final String XML_DOC_WITH_NESTED_ELEMENTS =
"<saml2:Attribute xmlns:saml2=\"urn:oasis:names:tc:SAML:2.0:assertion\"\n>"
+ " <saml2:AttributeValue xmlns:myCustomType=\"http://www.whatever.de/schema/myCustomType/saml/extensions\"\n"
+ " xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:type=\"myCustomType:AddressType\">\n"
+ " <myCustomType:Street>Zillestraße</myCustomType:Street>\n"
+ " <myCustomType:HouseNumber>17</myCustomType:HouseNumber>\n"
+ " <myCustomType:ZipCode>10585</myCustomType:ZipCode>\n"
+ " <myCustomType:City>Berlin</myCustomType:City>\n"
+ " <myCustomType:Country>DE</myCustomType:Country>\n"
+ " </saml2:AttributeValue>\n"
+ "</saml2:Attribute>";
@Test
public void parsesAttributeValueElementWithCustomTypes_ReturnsNull() throws Exception {
InputStream input = new ByteArrayInputStream(XML_DOC.getBytes(StandardCharsets.UTF_8));
XMLEventReader xmlEventReader = AbstractParser.createEventReader(input);
xmlEventReader.nextEvent();
final Object attributeValue = SAMLAttributeValueParser.getInstance().parse(xmlEventReader);
Assert.assertNull(attributeValue);
}
@Test
public void parsesAttributeValueElementWithSubElements_ReturnsNull() throws Exception {
InputStream input = new ByteArrayInputStream(XML_DOC_WITH_NESTED_ELEMENTS.getBytes(StandardCharsets.UTF_8));
XMLEventReader xmlEventReader = AbstractParser.createEventReader(input);
xmlEventReader.nextEvent();
final Object attributeValue = SAMLAttributeValueParser.getInstance().parse(xmlEventReader);
Assert.assertNull(attributeValue);
}
}