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Oracle Database Buffer overflows and Denial of service vulnerabilities
in public procedures of MDSYS.MD (DB05)

AppSecInc Team SHATTER Security Advisory
http://www.appsecinc.com/resources/alerts/oracle 
Jan 18, 2007

Affected versions: Oracle Database Server versions 8i, 9i and 10gR1

Risk level:  High

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 MDSYS.MD package that is used in the
Oracle Spatial component. These packages contain many public procedures
that are vulnerable to buffer overflow and denial of service attacks.

Impact:
By default MDSYS.MD has EXECUTE permission to PUBLIC so any Oracle
database user can exploit this vulnerability. Exploitation of this
vulnerability allows an attacker to execute arbitrary code. It can also
be exploited to cause DOS (Denial of service) killing Oracle server process.

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

Workaround:
Restrict access to the MDSYS.MD package.

Fix:
Apply Oracle Critical Patch Update January 2007 available at Oracle
Metalink.

Links:
http://www.oracle.com/technology/deploy/security/critical-patch-updates/cpujan2007.html 
http://www.appsecinc.com/resources/alerts/oracle 

- --
_____________________________________________
Application Security, Inc.
www.appsecinc.com 
AppSecInc is the leading provider of database security solutions for the
enterprise. AppSecInc products proactively secure enterprise
applications at more than 300 organizations around the world by
discovering, assessing, and protecting the database against rapidly
changing security threats. By securing data at its source, we enable
organizations to more confidently extend their business with customers,
partners and suppliers. Our security experts, combined with our strong
support team, deliver up-to-date application safeguards that minimize
risk and eliminate its impact on business.

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