Trigger Abuse of MDSYS.SDO_TOPO_DROP_FTBL in Oracle 10g R1 and R2

2009-01-16T00:00:00
ID SECURITYVULNS:DOC:21165
Type securityvulns
Reporter Securityvulns
Modified 2009-01-16T00:00:00

Description

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/cpujan2009.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

-- E-MAIL DISCLAIMER

The information contained in this email and any subsequent correspondence is private, is solely for the intended recipient(s) and may contain confidential or privileged information. For those other than the intended recipient(s), any disclosure, copying, distribution, or any other action taken, or omitted to be taken, in reliance on such information is prohibited and may be unlawful. If you are not the intended recipient and have received this message in error, please inform the sender and delete this mail and any attachments.

The views expressed in this email do not necessarily reflect NGS policy. NGS accepts no liability or responsibility for any onward transmission or use of emails and attachments having left the NGS domain.

NGS and NGSSoftware are trading names of Next Generation Security Software Ltd. Registered office address: Manchester Technology Centre, Oxford Road, Manchester, M1 7EF with Company Number 04225835 and VAT Number 783096402