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From "Thejas M Nair (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-9934) Vulnerability in LdapAuthenticationProviderImpl enables HiveServer2 client to degrade the authentication mechanism to "none", allowing authentication without password
Date Thu, 19 Mar 2015 15:02:38 GMT

    [ https://issues.apache.org/jira/browse/HIVE-9934?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14369465#comment-14369465
] 

Thejas M Nair commented on HIVE-9934:
-------------------------------------

bq. I was able to reproduce the issue after disabling JDBC authentication and use the Hadoop
provided SaslPlainServerFactory. 
[~csun] Can you please elaborate on what you had do to reproduce this ? What do you mean by
disabling JDBC authentication ? (I assume we need to set hive.server2.authentication=LDAP
for this scenario). Also, since the SaslPlainServerFactory in hive in a different package,
does changing the classpath alone result in the Hadoop provided SaslPlainServerFactory getting
used ?

cc [~vgumashta]


> Vulnerability in LdapAuthenticationProviderImpl enables HiveServer2 client to degrade
the authentication mechanism to "none", allowing authentication without password
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-9934
>                 URL: https://issues.apache.org/jira/browse/HIVE-9934
>             Project: Hive
>          Issue Type: Bug
>          Components: Security
>    Affects Versions: 1.1.0
>            Reporter: Chao
>            Assignee: Chao
>             Fix For: 1.2.0
>
>         Attachments: HIVE-9934.1.patch, HIVE-9934.2.patch, HIVE-9934.3.patch, HIVE-9934.3.patch
>
>
> Vulnerability in LdapAuthenticationProviderImpl enables HiveServer2 client to degrade
the authentication mechanism to "none", allowing authentication without password.
> See: http://docs.oracle.com/javase/jndi/tutorial/ldap/security/simple.html
> “If you supply an empty string, an empty byte/char array, or null to the Context.SECURITY_CREDENTIALS
environment property, then the authentication mechanism will be "none". This is because the
LDAP requires the password to be nonempty for simple authentication. The protocol automatically
converts the authentication to "none" if a password is not supplied.”
>  
> Since the LdapAuthenticationProviderImpl.Authenticate method is relying on a NamingException
being thrown during creation of initial context, it does not fail when the context result
is an “unauthenticated” positive response from the LDAP server. The end result is, one
can authenticate with HiveServer2 using the LdapAuthenticationProviderImpl with only a user
name and an empty password.



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