Vulnerable Systems:
* Oracle Database Server 8i (All platforms)
* Oracle Database Server 9i (All platforms)
Immune Systems:
* Oracle Database Server 10g
The vulnerability allows any valid database user to gain DBA rights over the database if CTXSYS is installed, by executing the DRILOAD package using a specially crafted parameter passed to it.
Workaround
The following workarounds are possible for vulnerable versions of Oracle:
* Drop the CTXSYS user if it's not needed.
* Revoke public grant from CTXSYS.DRILOAD and limit access to it by allowing trusted users only.