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Buffer Overflow in DBMS_REPCAT_RGT in Oracle 9i

Name	Buffer Overflow Oracle DBMS_REPCAT_RGT in Oracle 9i (up to 9.2.0.4)

Systems Affected	Oracle 9i
Severity	Medium Risk
Category	Buffer Overflow
Vendor URL	http://www.oracle.com/
Credit	Esteban Martinez Fayo (<argeniss>dot<com>)
Exploit	http://www.appsecinc.com
Date	10 May 2005 (V 1.00)

Details

Buffer Overflow in DBMS_REPCAT_RGT. This package has EXECUTE permission granted to SYSDBA or EXECUTE_CATALOG_ROLE. Members of these groups can exploit this vulnerability and crash the database or execute arbitrary code.

Example
SELECT DBMS_REPCAT_RGT.INSTANTIATE_OFFLINE ('longstring', '', '') FROM Dual;

SELECT DBMS_REPCAT_RGT.INSTANTIATE_ONLINE ('some_refresh_template_name', '', 'longstring') FROM Dual;

BEGIN
DBMS_REPCAT_RGT.DROP_SITE_INSTANTIATION ('longstring', '', '');
END;

Patch Information
Apply the latest Oracle Security patches (e.g. CPU October 2004 or at least alert 68).

Definition Exploit
An exploit is a common term in the computer security to refer to a piece of software that take advantage of a bug or vulnerability leading to a privilege escalation or d.o.s. on a computer system.
Computer security experts are using exploit code to test if a patch is working properly.