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NGSSoftware Insight Security Research Advisory
Name: Trigger abuse of MDSYS.SDO_TOPO_DROP_FTBL
Systems Affected: Oracle 10g R1 and R2 (10.1.0.5 and
10.2.0.2)
Severity: High
Vendor URL: http://www.oracle.com/
Author: David Litchfield [ davidl@ngssoftware.com ]
Reported: 23rd July 2008
Date of Public Advisory: 13th January 2009
Advisory number: #NISR13012009
CVE: CVE-2008-3979
Overview
********
Oracle has just released a fix for a flaw that, when
exploited, allows a low
privileged authenticated database user to gain MDSYS
privileges. This can be
abused by an attacker to perform actions as the MDSYS
user.
Details
*******
MDSYS.SDO_TOPO_DROP_FTBL is one of the triggers that
forms part of the
Oracle Spatial Application. It is vulnerable to SQL
injection. When a user
drops a table the trigger fires. The name of the
table is embedded in a
dynamic SQL query which is then executed by the
trigger. Note that the
Oracle advisory states that the attacker requires the
DROP TABLE and CREATE
PROCEDURE privileges. This is not the case and only
CREATE SESSION
privileges are required.
Fix Information
***************
Oracle was alerted to this flaw on the 23rd July
2008. A patch has now been
made available:
http://www.oracle.com/technology/deploy/security/critical-patch-updates/cpujan200
9.html
NGSSQuirreL for Oracle, an advanced vulnerability
assessment scanner
designed specifically for Oracle, can be used to
accurately determine
whether your servers are vulnerable to these flaws.
More information about
NGSSQuirreL for Oracle can be found here:
http://www.ngssoftware.com/products/database-security/ngs-squirrel-oraclephp
About NGSSoftware
*****************
NGSSoftware, an NCC Group Company, develops
vulnerability assessment and
compliancy tools for database servers including
Oracle, Microsoft SQL
Server, DB2, Sybase and Informix. Headquartered in
the United Kingdom NGS
has offices in London, St. Andrews (UK), Brisbane,
and Perth (Australia) and
Seattle in the United States; NGS provide services to
some of the largest
and most demanding organizations around the globe.
http://www.ngssoftware.com/
Telephone +44 208 401 0070
Fax +44 208 401 0076
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