Red-Database-Security GmbH Oracle Security Advisory

Name Oracle 10g DBMS_SCHEDULER SESSION_USER issue
Systems Affected Oracle Database 10g
Severity Medium Risk
Category Switch SESSION_USER to SYS
Vendor URL http://www.oracle.com
Author Alexander Kornbrust (ak at red-database-security.com)
Date 03 May 2005 (V 1.00)

Description
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Every user with CREATE JOB privilege can switch the SESSION_USER to SYS by executing a database job via dbms_scheduler. This could cause problems with VPD (virtual private database) or OLS (Oracle label security) and could allow privilege escalation.

This issue is not related to the Oracle Critical Patch Update 2005.

More details including testcase available:
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http://www.red-database-security.com/exploits/oracle_exploit_dbms_schedu
ler_select_user.html

Patch Information
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This information has been public for months but Oracle never released a security alert for this issue. Applying patchset 10.1.0.4 is fixing this issue.

History:
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07 October 2004 Published at the Oracle Enterprise Server Forum in Metalink

About Red-Database-Security GmbH
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Red-Database-Security GmbH is a specialist in Oracle Security.

http://www.red-database-security.com

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