db-derby-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Rick Hillegas (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DERBY-5968) A failed connection attempt may nevertheless manage to boot the database.
Date Mon, 29 Oct 2012 17:34:12 GMT
Rick Hillegas created DERBY-5968:

             Summary: A failed connection attempt may nevertheless manage to boot the database.
                 Key: DERBY-5968
                 URL: https://issues.apache.org/jira/browse/DERBY-5968
             Project: Derby
          Issue Type: Bug
          Components: Services
    Affects Versions:
            Reporter: Rick Hillegas

A connection attempt may fail but still manage to boot the database. If possible, we should
try to bring down the database after the connection failure.

1) Here is an example of this problem: If you use bad credentials to connect to a database,
you will fail to get a connection. That's correct behavior. However, Derby must boot the database
in order to discover its authentication mechanism. The database remains booted after this

2) There are other examples of this problem. For instance, if a user with good credentials
tries to change the boot password on an encrypted database, then the connection attempt will
fail, but the database will remain booted. This can cause silent failures on later attempts
to re-encrypt or un-encrypt a database after the low-privilege or nonexistent user manages
to boot the database. The connection attempt will succeed, leading the DBO to think that the
re-encryption worked. But actually re-encryption did not take place because the database was
already booted.

I regard this silent failure as a security vulnerability.

The following script shows problem (1):

connect 'jdbc:derby:db;create=true;user=test_dbo';

call syscs_util.syscs_create_user( 'test_dbo', 'test_dbopassword' );

-- shutdown the database
connect 'jdbc:derby:db;shutdown=true';

-- need credentials in order to get a connection
connect 'jdbc:derby:db';
connect 'jdbc:derby:db;user=test_dbo;password=test_dbopassword';
select count(*) from sys.systables;

-- shutdown the database
connect 'jdbc:derby:db;shutdown=true;user=test_dbo;password=test_dbopassword';

-- try to shutdown the database again. since it is already shutdown, you will get a message
saying it can't be found.
connect 'jdbc:derby:db;shutdown=true;user=test_dbo;password=test_dbopassword';

-- now try to boot with bad credentials. you don't get a connection but the database boots.
connect 'jdbc:derby:db;user=alice;password=alicepassword;bootPassword=foobarwibblewombat';
select count(*) from sys.systables;

-- the shutdown command succeeds because alice managed to boot the database
-- even though she isn't a legal user.
connect 'jdbc:derby:db;shutdown=true;user=test_dbo;password=test_dbopassword';

This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

View raw message