Security Bulletin: Unauthorized Access to Table Vulnerability in DB2 (CVE-2013-4033)

Abstract

A vulnerability in IBM DB2 could allow an authenticated user holding EXPLAIN authority to temporarily gain SELECT, INSERT, UPDATE or DELETE privilege on a table.

Content

VULNERABILITY DETAILS

CVE ID: CVE-2013-4033

DESCRIPTION:

The IBM DB2 products listed below contain a security vulnerability which could allow an authenticated user to temporarily gain SELECT, INSERT, UPDATE or DELETE privileges on a table. To exploit the vulnerability, the user would need to have a valid security credential to connect to the database and EXPLAIN, SQLADM or DBADM authority.

Under unspecified conditions, a user with the above authorities will be able to execute a DML statement such as SELECT, INSERT, UPDATE and DELETE on a table that they do not have DATAACCESS authority for. Only DML statements are vulnerable.

CVSS:
CVSS Base Score: 6.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/86093 for the current score
CVSS Environmental Score*: Undefined
CVSS String: (AV:N/AC:L/Au:S/C:P/I:P/A:P)

AFFECTED PLATFORMS:

The following IBM DB2 V9.7, V10.1 and V10.5 editions running on AIX, Linux, HP, Solaris and Windows:

IBM® DB2® Express Edition
IBM® DB2® Workgroup Server Edition
IBM® DB2® Enterprise Server Edition
IBM® DB2® Advanced Enterprise Server Edition
IBM® DB2® Advanced Workgroup Server Edition
IBM® DB2® Connect™ Application Server Edition
IBM® DB2® Connect™ Enterprise Edition
IBM® DB2® Connect™ Unlimited Edition for System i®
IBM® DB2® Connect™ Unlimited Edition for System z®

The following IBM V9.8 editions running on AIX and Linux:

IBM® DB2® pureScale™ Feature for Enterprise Server Edition

The DB2 Connect products mentioned are affected only if a local database has been created.

The vulnerability is not applicable to DB2 releases before V9.7.

REMEDIATION:
The recommended solution is to apply the appropriate fix for this vulnerability. There is no workaround nor mitigation for this vulnerability.

Workarokund/Mitigation:
None.

Fix:
The fix for this vulnerability is available for download for DB2 and DB2 Connect release V9.7 FP9, V10.1 FP3 and V10.5 FP1.

For DB2 and DB2 Connect V9.8, the fix is planned to be made available in future fix packs.

A special build with an interim patch for this issue may be requested for DB2 and DB2 Connect V9.8 FP5. Please contact your service representative to request the special build and reference the APAR number for the release you want.

You may download the specific fix pack you need from the following:

Contact Technical Support:

In the United States and Canada dial 1-800-IBM-SERV
View the support contacts for other countries outside of the United States.
Electronically open a Service Request with DB2 Technical Support.

REFERENCES:

• Complete CVSS v2 Guide
• On-line Calculator V2

CHANGE HISTORY:
August 22, 2013: Original version published.
September 30, 2013: V10.1 FP3 shipped. Updated download URL.
October 29, 2013: Remove SQL query that shows who has EXPLAIN authority.
December 16, 2013: Added V9.7 FP9 download URL.

_*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Flash. _

_Note: _According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an “industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response.” IBM PROVIDES THE CVSS SCORES “AS IS” WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

Note:_ IBM’s statements regarding its plans, directions, and intent are subject to change or withdrawal without notice at IBM’s sole discretion. Information regarding potential future products is intended to outline our general product direction and it should not be relied on in making a purchasing decision. The information mentioned regarding potential future products is not a commitment, promise, or legal obligation to deliver any material, code or functionality. Information about potential future products may not be incorporated into any contract. The development, release, and timing of any future features or functionality described for our products remains at our sole discretion._

[{“Product”:{“code”:“SSEPGG”,“label”:“Db2 for Linux, UNIX and Windows”},“Business Unit”:{“code”:“BU058”,“label”:“IBM Infrastructure w/TPS”},“Component”:“Security / Plug-Ins - Security Vulnerability”,“Platform”:[{“code”:“PF002”,“label”:“AIX”},{“code”:“PF010”,“label”:“HP-UX”},{“code”:“PF016”,“label”:“Linux”},{“code”:“PF027”,“label”:“Solaris”},{“code”:“PF033”,“label”:“Windows”}],“Version”:“9.8;9.7;10.1;10.5”,“Edition”:“Advanced Enterprise Server;Enterprise Server;Express;Express-C;Personal;Workgroup Server”,“Line of Business”:{“code”:“LOB10”,“label”:“Data and AI”}},{“Product”:{“code”:“SSEPDU”,“label”:“Db2 Connect”},“Business Unit”:{“code”:“BU053”,“label”:“Cloud \u0026 Data Platform”},“Component”:null,“Platform”:[{“code”:“”,“label”:“”}],“Version”:“9.7;10.1;10.5”,“Edition”:“”,“Line of Business”:{“code”:“LOB10”,“label”:“Data and AI”}}]