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Posted to common-issues@hadoop.apache.org by "Erik Krogen (JIRA)" <ji...@apache.org> on 2019/04/12 19:16:00 UTC
[jira] [Commented] (HADOOP-16245) Enabling SSL within
LdapGroupsMapping can break system SSL configs
[ https://issues.apache.org/jira/browse/HADOOP-16245?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16816588#comment-16816588 ]
Erik Krogen commented on HADOOP-16245:
--------------------------------------
Attaching a v000 patch for initial review while we start doing some testing internally to make sure we didn't break anything.
> Enabling SSL within LdapGroupsMapping can break system SSL configs
> ------------------------------------------------------------------
>
> Key: HADOOP-16245
> URL: https://issues.apache.org/jira/browse/HADOOP-16245
> Project: Hadoop Common
> Issue Type: Bug
> Components: common, security
> Affects Versions: 2.9.1, 2.8.4, 2.7.6, 3.1.1, 3.0.3
> Reporter: Erik Krogen
> Assignee: Erik Krogen
> Priority: Major
> Attachments: HADOOP-16245.000.patch
>
>
> When debugging an issue where one of our server components was unable to communicate with other components via SSL, we realized that LdapGroupsMapping sets its SSL configurations globally, rather than scoping them to the HTTP clients it creates.
> {code:title=LdapGroupsMapping}
> DirContext getDirContext() throws NamingException {
> if (ctx == null) {
> // Set up the initial environment for LDAP connectivity
> Hashtable<String, String> env = new Hashtable<String, String>();
> env.put(Context.INITIAL_CONTEXT_FACTORY,
> com.sun.jndi.ldap.LdapCtxFactory.class.getName());
> env.put(Context.PROVIDER_URL, ldapUrl);
> env.put(Context.SECURITY_AUTHENTICATION, "simple");
> // Set up SSL security, if necessary
> if (useSsl) {
> env.put(Context.SECURITY_PROTOCOL, "ssl");
> if (!keystore.isEmpty()) {
> System.setProperty("javax.net.ssl.keyStore", keystore);
> }
> if (!keystorePass.isEmpty()) {
> System.setProperty("javax.net.ssl.keyStorePassword", keystorePass);
> }
> if (!truststore.isEmpty()) {
> System.setProperty("javax.net.ssl.trustStore", truststore);
> }
> if (!truststorePass.isEmpty()) {
> System.setProperty("javax.net.ssl.trustStorePassword",
> truststorePass);
> }
> }
> env.put(Context.SECURITY_PRINCIPAL, bindUser);
> env.put(Context.SECURITY_CREDENTIALS, bindPassword);
> env.put("com.sun.jndi.ldap.connect.timeout", conf.get(CONNECTION_TIMEOUT,
> String.valueOf(CONNECTION_TIMEOUT_DEFAULT)));
> env.put("com.sun.jndi.ldap.read.timeout", conf.get(READ_TIMEOUT,
> String.valueOf(READ_TIMEOUT_DEFAULT)));
> ctx = new InitialDirContext(env);
> }
> {code}
> Notice the {{System.setProperty()}} calls, which will change settings JVM-wide. This causes issues for other SSL clients, which may rely on the default JVM truststore being used. This behavior was initially introduced by HADOOP-8121, and extended to include the truststore configurations in HADOOP-12862.
> The correct approach is to use a mechanism which is scoped to the LDAP requests only. The right approach appears to be to use the {{java.naming.ldap.factory.socket}} parameter to set the socket factory to a custom SSL socket factory which correctly sets the key and trust store parameters. See an example [here|https://stackoverflow.com/a/4615497/4979203].
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