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KEYCLOAK-4790 Fix empty attribute value issue in SAML parser

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This commit is contained in:
Hynek Mlnarik 2017-05-23 15:14:25 +02:00
parent 178fd08d9a
commit 67a05ee227
5 changed files with 92 additions and 1 deletions
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2
saml-core/src/main/java/org/keycloak/saml/common/parsers/AbstractParser.java
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@ -146,7 +146,7 @@ public abstract class AbstractParser implements ParserNamespaceSupport {
}
private boolean valid(String str) {
return str != null && str.length() > 0;
return str != null && ! str.isEmpty();
}
});

5
saml-core/src/main/java/org/keycloak/saml/processing/core/parsers/util/SAMLParserUtil.java
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@ -308,6 +308,11 @@ public class SAMLParserUtil {
return parseNameIDType(xmlEventReader);
}
} else if (xmlEvent instanceof EndElement) {
// consume the end element tag
EndElement end = StaxParserUtil.getNextEndElement(xmlEventReader);
String endElementTag = StaxParserUtil.getEndElementName(end);
if (! StaxParserUtil.matches(end, JBossSAMLConstants.ATTRIBUTE_VALUE.get()))
throw logger.parserUnknownEndElement(endElementTag);
return "";
}

16
saml-core/src/test/java/org/keycloak/saml/processing/core/parsers/saml/SAMLParserTest.java
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@ -200,4 +200,20 @@ public class SAMLParserTest {
assertThat(parsedObject, instanceOf(EntityDescriptorType.class));
}
}
@Test
public void testEmptyAttributeValue() throws Exception {
try (InputStream st = SAMLParserTest.class.getResourceAsStream("KEYCLOAK-4790-Empty-attribute-value.xml")) {
Object parsedObject = parser.parse(st);
assertThat(parsedObject, instanceOf(ResponseType.class));
}
}
@Test
public void testEmptyAttributeValueLast() throws Exception {
try (InputStream st = SAMLParserTest.class.getResourceAsStream("KEYCLOAK-4790-Empty-attribute-value-last.xml")) {
Object parsedObject = parser.parse(st);
assertThat(parsedObject, instanceOf(ResponseType.class));
}
}
}

35
saml-core/src/test/resources/org/keycloak/saml/processing/core/parsers/saml/KEYCLOAK-4790-Empty-attribute-value-last.xml Normal file
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@ -0,0 +1,35 @@
<samlp:Response xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion" ID="_d9e9e102-f048-48fb-a1a3-b5a82d9cd9c3" Version="2.0"
IssueInstant="2017-04-24T12:50:14.645Z" Destination="https://y/auth/realms/administration/broker/saml/endpoint"
Consent="urn:oasis:names:tc:SAML:2.0:consent:unspecified" InResponseTo="ID_638a829f-7ad2-408e-b3e5-5f2240010ds7f">
<saml:Issuer xmlns="urn:oasis:names:tc:SAML:2.0:assertion">https://x/</saml:Issuer>
<samlp:Status>
<samlp:StatusCode Value="urn:oasis:names:tc:SAML:2.0:status:Success"/>
</samlp:Status>
<Assertion xmlns="urn:oasis:names:tc:SAML:2.0:assertion" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" ID="_0cceed2a-e409-4faa-a411-c647be748f2b" IssueInstant="2017-04-24T12:50:14.645Z" Version="2.0">
<Issuer>https://x/</Issuer>
<Subject>
<NameID Format="urn:oasis:names:tc:SAML:1.1:nameid-format:X509SubjectName">C=c,OU=ou</NameID>
<SubjectConfirmation Method="urn:oasis:names:tc:SAML:2.0:cm:bearer">
<SubjectConfirmationData InResponseTo="ID_638a829f-7ad2-408e-b3e5-5f224001057f" NotOnOrAfter="2017-04-24T12:55:14.645Z" Recipient="https://y/auth/realms/administration/broker/saml/endpoint"/>
</SubjectConfirmation>
</Subject>
<Conditions NotBefore="2017-04-24T12:45:14.380Z" NotOnOrAfter="2017-04-24T13:45:14.380Z">
<AudienceRestriction>
<Audience>https://x/auth/realms/administration</Audience>
</AudienceRestriction>
</Conditions>
<AttributeStatement>
<Attribute Name="urn:oid:0.9.2342.19200300.100.1.3" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:basic">
<AttributeValue>aa</AttributeValue>
</Attribute>
<Attribute Name="urn:oid:0.9.2342.19200300.100.1.2" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:basic">
<AttributeValue/>
</Attribute>
</AttributeStatement>
<AuthnStatement AuthnInstant="2017-04-24T12:50:14.037Z" SessionIndex="_0cceed2a-e409-4faa-a411-c647be748f2b">
<AuthnContext>
<AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:X509</AuthnContextClassRef>
</AuthnContext>
</AuthnStatement>
</Assertion>
</samlp:Response>

35
saml-core/src/test/resources/org/keycloak/saml/processing/core/parsers/saml/KEYCLOAK-4790-Empty-attribute-value.xml Normal file
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@ -0,0 +1,35 @@
<samlp:Response xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion" ID="_d9e9e102-f048-48fb-a1a3-b5a82d9cd9c3" Version="2.0"
IssueInstant="2017-04-24T12:50:14.645Z" Destination="https://y/auth/realms/administration/broker/saml/endpoint"
Consent="urn:oasis:names:tc:SAML:2.0:consent:unspecified" InResponseTo="ID_638a829f-7ad2-408e-b3e5-5f2240010ds7f">
<saml:Issuer xmlns="urn:oasis:names:tc:SAML:2.0:assertion">https://x/</saml:Issuer>
<samlp:Status>
<samlp:StatusCode Value="urn:oasis:names:tc:SAML:2.0:status:Success"/>
</samlp:Status>
<Assertion xmlns="urn:oasis:names:tc:SAML:2.0:assertion" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" ID="_0cceed2a-e409-4faa-a411-c647be748f2b" IssueInstant="2017-04-24T12:50:14.645Z" Version="2.0">
<Issuer>https://x/</Issuer>
<Subject>
<NameID Format="urn:oasis:names:tc:SAML:1.1:nameid-format:X509SubjectName">C=c,OU=ou</NameID>
<SubjectConfirmation Method="urn:oasis:names:tc:SAML:2.0:cm:bearer">
<SubjectConfirmationData InResponseTo="ID_638a829f-7ad2-408e-b3e5-5f224001057f" NotOnOrAfter="2017-04-24T12:55:14.645Z" Recipient="https://y/auth/realms/administration/broker/saml/endpoint"/>
</SubjectConfirmation>
</Subject>
<Conditions NotBefore="2017-04-24T12:45:14.380Z" NotOnOrAfter="2017-04-24T13:45:14.380Z">
<AudienceRestriction>
<Audience>https://x/auth/realms/administration</Audience>
</AudienceRestriction>
</Conditions>
<AttributeStatement>
<Attribute Name="urn:oid:0.9.2342.19200300.100.1.2" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:basic">
<AttributeValue/>
</Attribute>
<Attribute Name="urn:oid:0.9.2342.19200300.100.1.3" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:basic">
<AttributeValue>aa</AttributeValue>
</Attribute>
</AttributeStatement>
<AuthnStatement AuthnInstant="2017-04-24T12:50:14.037Z" SessionIndex="_0cceed2a-e409-4faa-a411-c647be748f2b">
<AuthnContext>
<AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:X509</AuthnContextClassRef>
</AuthnContext>
</AuthnStatement>
</Assertion>
</samlp:Response>