Wildfly standalone.xml - passing secret to KeyCloak SPI from elytron credential store

Question

I'm migrating KeyCloak v15 (WildFly v23) passwords from the old vault to elytron credential store. It works fine for the standard use case. In standalone.xml, I have: /server/extensions/extension:

<extension module="org.wildfly.extension.elytron"/>

/server/profile/subsystem:

<subsystem xmlns="urn:wildfly:elytron:13.0" final-providers="elytron" disallowed-providers="OracleUcrypto">
    <providers>
        <provider-loader name="elytron" module="org.wildfly.security.elytron"/>
    </providers>
    <audit-logging>
        <file-audit-log name="local-audit" path="audit-log.log" relative-to="jboss.server.log.dir" format="JSON"/>
    </audit-logging>
    <credential-stores>
        <credential-store name="credStore" location="/data/credStore.jceks">
            <implementation-properties>
                <property name="keyStoreType" value="JCEKS"/>
            </implementation-properties>
            <credential-reference clear-text="MASK-123456789;salt123;42"/>
        </credential-store>
    </credential-stores>
</subsystem>

and I access the passwords using /server/profile/subsystem[@xmlns="urn:jboss:domain:jgroups:8.0"]/stacks/stack[@name="tcp"]/auth-protocol/digest-token/shared-secret-reference:

<shared-secret-reference store="credStore" alias="myBlock::mySecret"/>

However, there is one secret I need to pass to a SPI in a property. Any idea how to do it? This was the old vault way:

/server/system-properties/property:

<property name="secret" value="${VAULT::myBlock::mySecret::1}"/>

/server/profile/subsystem[@xmlns="urn:jboss:domain:keycloak-server:1.1"]/spi:

<spi name="mySpi">
    <provider name="file" enabled="true">
        <properties>
            <property name="password" value="${secret}"/>
        </properties>
    </provider>
</spi>

score 0 · Answer 1 · answered Sep 14 '21 at 18:06

0

I found 2 possibilities:

Rewrite the SPI to retrieve the secret directly from Elytron credential store in Java
Set an environment variable beforehand (export SECRET="$(secret-getter-script)") and use the variable in standalone.xml:

<spi name="mySpi">
    <provider name="file" enabled="true">
        <properties>
            <property name="password" value="${env.SECRET}"/>
        </properties>
    </provider>
</spi>

answered Sep 14 '21 at 18:06

McLayn

61
1
7

In the end, using an environment variable wasn't safe enough for our use and I had to teach our SPI to read Elytron credential store contents – McLayn Nov 09 '21 at 12:28

score 0 · Accepted Answer · answered Nov 09 '21 at 12:30

I had to rewrite our SPI to read Elytron credential store contents:

import org.jboss.as.server.CurrentServiceContainer;
import org.jboss.msc.service.ServiceController;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.ServiceRegistry;
import org.wildfly.security.credential.PasswordCredential;
import org.wildfly.security.credential.store.CredentialStore;
import org.wildfly.security.credential.store.CredentialStoreException;
import org.wildfly.security.password.Password;
import org.wildfly.security.password.interfaces.ClearPassword;

  private static String getClientSecret(String credentialStore, String secretAlias) {
    final ServiceName SERVICE_NAME_CRED_STORE = ServiceName.of("org", "wildfly", "security", "credential-store");
    final ServiceName sn = ServiceName.of(SERVICE_NAME_CRED_STORE, credentialStore);
    final ServiceRegistry registry = CurrentServiceContainer.getServiceContainer();
    final ServiceController<?> credStoreService = registry.getService(sn);
    final CredentialStore cs = (CredentialStore) credStoreService.getValue();
//    if (!cs.exists(secretAlias, PasswordCredential.class)) {
//      throw new CredentialStoreException("Alias " + secretAlias + " not found in credential store.");
//    }
    final Password password;
    try {
      password = cs.retrieve(secretAlias, PasswordCredential.class).getPassword();
    } catch (CredentialStoreException e) {
      e.printStackTrace();
      return null;
    }
    if (!(password instanceof ClearPassword)) {
      throw new ClassCastException("Password is not of type ClearPassword");
    }
    return new String(((ClearPassword) password).getPassword());
  }

Wildfly standalone.xml - passing secret to KeyCloak SPI from elytron credential store

2 Answers2