[VulnWatch] Oracle multiple PL/SQL injection vulnerabilities (#NISR2122004H)

From: NGSSoftware Insight Security Research (nisr_at_nextgenss.com)
Date: 12/23/04

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    To: <bugtraq@securityfocus.com>, <ntbugtraq@listserv.ntbugtraq.com>, <vulnwatch@vulnwatch.org>
Date: Thu, 23 Dec 2004 16:37:24 -0000

    NGSSoftware Insight Security Research Advisory

    Name: Oracle 10g/9i Multiple PL/SQL injection vulnerabilities
    Systems Affected: Oracle 10g/AS on all operating systems
    Severity: High risk
    Vendor URL: http://www.oracle.com/
    Author: David Litchfield [ davidl at ngssoftware.com ]
    Relates to: http://www.nextgenss.com/advisories/oracle-01.txt
    Date of Public Advisory: 23rd December 2004
    Advisory number: #NISR2122004H
    Advisory URL: http://www.ngssoftware.com/advisories/oracle23122004H.txt

    Description
    ***********
    Oracle 10g and 9i suffer from multiple PL/SQL injection vulnerabilities.

    Details
    *******

    When a PL/SQL procedure executes, it does so with the permissions of the
    definer unless the AUTHID CURRENT USER keyword has been specified. In this
    case the procedure executes with invoker privileges. Any procedure that uses
    definer rights can be abused to gain elevated privileges if they are
    vulnerable to PL/SQL injection. Known to be vulnerable are

    Owner Procedure

    SYS DBMS_EXPORT_EXTENSION
    WKSYS WK_ACL.GET_ACL
    WKSYS WK_ACL.STORE_ACL
    WKSYS WK_ADM.COMPLETE_ACL_SNAPSHOT
    WKSYS WK_ACL.DELETE_ACLS_WITH_STATEMENT
    CTXSYS DRILOAD.VALIDATE_STMT

    Each of these can be exploited to gain DBA privileges. Further, attacks can
    be affected via an Oracle Application Server without the attacker having a
    user ID and password.

    Note - CTXSYS is not a DBA in 10g but is on 9i.

    Fix Information
    ***************
    A patch (#68) was released for this problem by Oracle. See
    http://metalink.oracle.com/ for more details. NGSSQuirreL for Oracle
    (http://www.nextgenss.com/squirrelora.htm), can be used to assess whether
    your Oracle servers are vulnerable to this.

    About NGSSoftware
    *****************
    NGSSoftware design, research and develop intelligent, advanced application
    security assessment scanners. Based in the United Kingdom, NGSSoftware have
    offices in the South of London and the East Coast of Scotland. NGSSoftware's
    sister company NGSConsulting, offers best of breed security consulting
    services, specialising in application, host and network security
    assessments.

    http://www.ngssoftware.com/

    Telephone +44 208 401 0070
    Fax +44 208 401 0076

    enquiries@ngssoftware.com

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