This just in from comp.databases.oracle.server. See metalink bug 2121935.
Using ANSI syntax joins (CROSS JOIN, LEFT OUTER etc) allows you to view data from tables on which you have no privilege. For example, try this COMPLETE script: connect / as sysdba create user us1 identified by us1; grant create session to us1; connect us1/us1 select userid, password from sys.link$ cross join dual ; Worse still, if you have the privilege to create views then this loophole allows you to seek and destroy ANY DATA in the database that you might want to. The bug is fixed in 9iR2. I didn't see any note about a backport, or a security alert on OTN. Conclusion: 9.0.1 should not be in use on production system until Oracle supplies a fix. Jonathan Lewis http://www.jlcomp.demon.co.uk Author of: Practical Oracle 8i: Building Efficient Databases Next Seminar - Australia - July/August http://www.jlcomp.demon.co.uk/seminar.html Host to The Co-Operative Oracle Users' FAQ http://www.jlcomp.demon.co.uk/faq/ind_faq.html -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Jonathan Lewis INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).