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Buffer Overflow in ONS Service

Name	Buffer Overflow in ONS Service (6914665) [OPMN01]
Systems Affected	Oracle 10g Rel. 1 / Oracle Application Server 9.0.2 and higher
Severity	High Risk
Category	Buffer Overflow
Vendor URL	http://www.oracle.com/
Author	Alexander Kornbrust (ak at red-database-security.com)
CVE
Advisory	16 January 2007 (V 1.00)
Time to fix	371 days
CVSS Score	4.7

Details
The Oracle Notification Service (ONS) is using simple push/subscribe method to publish event mesages to all nodes with active ONS daemons. By default ONS is running on port 6200 and is installed by in Oracle RAC, Oracle Application Server and Oracle Databases 10g Release 1.

The service ONS contains a remote exploitable buffer overflow. This vulnerability could be exploited without login credentials by sending a specially crafted TCP packet. Thanks to FX from Sabre-Security for further analysis.

Testcase
Run the portscanner amap from THC against port 6200.

Patch Information
Apply the patches for Oracle CPU January 2007.

History
10-jan-2006 Oracle secalert was informed
16-jan-2007 Oracle published CPU January 2006 [OPMN01]
16-jan-2007 Advisory published