TITLE:
Oracle Products PL/SQL Gateway Security Bypass Vulnerability

SECUNIA ADVISORY ID:
SA18621

VERIFY ADVISORY:
http://secunia.com/advisories/18621/

CRITICAL:
Highly critical

IMPACT:
Security Bypass

WHERE:
>From remote

SOFTWARE:
Oracle9i Database Standard Edition
http://secunia.com/product/358/
Oracle9i Database Enterprise Edition
http://secunia.com/product/359/
Oracle9i Application Server
http://secunia.com/product/443/
Oracle Application Server 10g
http://secunia.com/product/3190/
Oracle Database 8.x
http://secunia.com/product/360/
Oracle HTTP Server 8.x
http://secunia.com/product/2596/
Oracle HTTP Server 9.x
http://secunia.com/product/2597/

DESCRIPTION:
David Litchfield has reported a vulnerability in various Oracle
products, which can be exploited by malicious people to bypass
certain security restrictions.

The vulnerability is caused due to an error in the Oracle PL/SQL
Gateway component during the validation of certain HTTP requests.
This can be exploited to bypass the PLSQLExclusion list and gain
access to excluded packages and procedures via specially-crafted HTTP
requests.

Successful exploitation allows an attacker to gain DBA access to the
database server through the web server.

The vulnerability has been reported in the PL/SQL Gateway component
included in the Oracle Application Server and the Oracle HTTP
Server.

Note: The affected component may also be included in other Oracle
products.

SOLUTION:
Filter malicious characters and character sequences in a proxy or
firewall with URL filtering capabilities.

PROVIDED AND/OR DISCOVERED BY:
David Litchfield

ORIGINAL ADVISORY:
http://lists.grok.org.uk/pipermail/full-disclosure/2006-January/041742.html

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