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Team SHATTER Security Advisory

Oracle Database Buffer Overflow in SYS.DBMS_AQJMS_INTERNAL (DB15)

April 28, 2008

Risk Level:
Medium

Affected versions:
Oracle Database Server versions 9iR1, 9iR2 (9.2.0.7 and previous
patchsets) and 10gR1

Remote exploitable:
Yes (Authentication to Database Server is needed)

Credits:
This vulnerability was discovered and researched by Esteban Mart=EDnez
Fay=F3 of Application Security Inc.

Details:
Oracle Database Server provides the SYS.DBMS_AQJMS_INTERNAL package.
This package contains the procedures AQ$_REGISTER and AQ$_UNREGISTER
which are vulnerable to buffer overflow attacks.

Impact:
Any Oracle database user with EXECUTE privilege on the package
SYS.DBMS_AQJMS_INTERNAL can exploit this vulnerability. By default,
users granted EXECUTE_CATALOG_ROLE, AQ_ADMINISTRATOR_ROLE or
AQ_USER_ROLE have the required privilege. Exploitation of this
vulnerability allows an attacker to execute arbitrary code. It can also
be exploited to cause DoS (Denial of service) killing the Oracle server
process.

Vendor Status:
Vendor was contacted and a patch was released.

Workaround:
Restrict access to the SYS.DBMS_AQJMS_INTERNAL package.

Fix:
Apply Oracle Critical Patch Update April 2008 available at Oracle Metalink.

Links:
http://www.oracle.com/technology/deploy/security/critical-patch-updates/cpuapr2008.html 
http://www.appsecinc.com/resources/alerts/oracle/2008-03.shtml 

Timeline:
Vendor Notification - 2/22/2005
Fix - 04/15/2008
Public Disclosure - 04/28/2008

Application Security, Inc's database security solutions have helped over
1000 organizations secure their databases from all internal and external
threats while also ensuring that those organizations meet or exceed
regulatory compliance and audit requirements.

Disclaimer: The information in the advisory is believed to be accurate
at the time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS condition.
There are no warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct, indirect,
or consequential loss or damage arising from use of, or reliance on,
this information.



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