Team SHATTER Security Advisory: Buffer Overflow in Resource Manager of Oracle Database - Plan name parameter

[Shatter <shatter () appsecinc com>]

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Team SHATTER Security Advisory

Buffer Overflow in Resource Manager of Oracle Database - Plan name parameter

August 27, 2009

Risk Level:
Medium

Affected versions:
Oracle Database Server version 9iR1 and 9iR2

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

Credits:
This vulnerability was discovered and researched by Esteban Martínez Fayó of Application Security Inc.

Details:
The plan name parameter used in ALTER SYSTEM SET RESOURCE_MANAGER_PLAN statement and in 
SYS.DBMS_RESOURCE_MANAGER.SWITCH_PLAN procedure is vulnerable to buffer overflow attacks. When passing an overly long 
plan name string a buffer can be overflowed.

Impact:
To exploit this vulnerability it is required to have ALTER SYSTEM 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 ALTER SYSTEM privilege.

Fix:
Apply Oracle Critical Patch Update July 2009 available at Oracle Metalink.

CVE:
CVE-2009-0979

Links:
http://www.oracle.com/technology/deploy/security/critical-patch-updates/cpuapr2009.html
http://www.oracle.com/technology/deploy/security/critical-patch-updates/cpujul2009.html

Timeline:
Vendor Notification - 8/15/2007
Fix - 07/14/2009
Public Disclosure - 08/07/2009

Application Security, Inc's database security solutions have helped over 1,600 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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