Multiple vulnerabilities have been reported in Oracle Database, which can be exploited by malicious users to disclose potentially sensitive information, manipulate certain data, bypass certain security restrictions, conduct SQL injection attacks, cause a DoS (Denial of Service), and compromise a vulnerable system.

1) An unspecified error in the Application Express component can be exploited by authenticated users.

Successful exploitation of this vulnerability may allow execution of arbitrary code, but requires APEX developer user privileges.

2) Certain input passed via spatial indexes to the Core RDBMS is not properly sanitised before being used in SQL queries. This can be exploited to manipulate SQL queries by injecting arbitrary SQL code.

Successful exploitation of this vulnerability requires Create session, create procedure, and create table privileges.

3) An error within the TABLEFUNC_ASOWN function in the Oracle Text component can be exploited by authenticated users to cause a buffer overflow via overly long string parameters.

Successful exploitation of this vulnerability requires Execute on CTXSYS.DRVDISP privileges.

4) An error within the OCIPasswordChange API in the Database Vault component can be exploited to change a user's password.

Successful exploitation of this vulnerability requires DV_ACCTMGR privileges.

5) An error within the OCIPasswordChange API in the Database Vault component can be exploited to change a user's password.

Successful exploitation of this vulnerability requires SYSDBA privileges.

The vulnerabilities are reported in the following products:
* Oracle Database 11g Release 2 version 11.2.0.2.
* Oracle Database 11g Release 1 version 11.1.0.7.
* Oracle Database 10g Release 2 versions 10.2.0.3, 10.2.0.4, and 10.2.0.5.
* Oracle Database 10g Release 1 version 10.1.0.5.

Solution
Apply updates (please see the vendor's advisory for details).

Provided and/or discovered by
2) Martin Rakhmanov, Application Security Inc.
3, 4, 5) Esteban Martinez Fayo, Application Security Inc.

It is currently unclear who reported the remaining vulnerability as the Oracle Critical Patch Update for October 2011 only provides a bundled list of credits. This section will be updated when/if the original reporter provides more information.

Changelog
Further details available to Secunia VIM customers

Original Advisory
Oracle:
http://www.oracle.com/technetwork/topics/security/cpuoct2011-330135.html

Application Security:
http://www.teamshatter.com/topics/general/team-shatter-exclusive/sql-injection-vulnerability-in-oracle-drop-index-for-spatial-datatypes/
http://www.teamshatter.com/topics/general/team-shatter-exclusive/database-vault-account-management-vulnerabilites/
http://www.teamshatter.com/topics/general/team-shatter-exclusive/buffer-overflow-in-oracle-database-ctxsys-drvdisp-tablefunc_asown-function/

Other references
Further details available to Secunia VIM customers

Deep Links
Links available to Secunia VIM customers