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AUSCERT External Security Bulletin Redistribution
ESB-2013.1150
Security Bulletin: Unauthorized Access to Table
Vulnerability in DB2 (CVE-2013-4033)
23 August 2013
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM DB2
Publisher: IBM
Operating System: AIX
HP-UX
Linux variants
Solaris
Windows
Impact/Access: Unauthorised Access -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2013-4033
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21646809
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Security Bulletin: Unauthorized Access to Table Vulnerability in DB2
(CVE-2013-4033)
Flash (Alert)
Document information
DB2 for Linux, UNIX and Windows
Software version:
9.7, 9.8, 10.1, 10.5
Operating system(s):
AIX, HP-UX, Linux, Solaris, Windows
Software edition:
Advanced Enterprise Server, Enterprise Server, Express, Express-C, Personal,
Workgroup Server
Reference #:
1646809
Modified date:
2013-08-22
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.
The following query will show which user has EXPLAIN / SQLADM / DBADM authority
but no DATAACCESS authority:
SELECT
SUBSTR(grantor,1,10) grantor,
SUBSTR(grantee,1,20) grantee,
granteetype,
explainauth,
dbadmauth,
sqladmauth,
dataaccessauth FROM SYSCAT.DBAUTH
WHERE
dataaccessauth = 'N' and
(explainauth = 'Y' or dbadmauth = 'Y' or sqladmauth = 'Y')
CVSS:
CVSS Base Score: 6.5
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/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 V10.5 FP1.
For DB2 and DB2 Connect V9.7, V9.8 and V10.1, 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 V9.7 FP7 & FP8, V9.8 FP5 and V10.1 FP1 & FP2. 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:
Release APAR Download URL
V9.7 IC94523 Not available. Please contact technical
support.
V9.8 IC94756 Not available. Please contact technical
support.
V10.1 IC94757 Not available. Please contact technical
support.
V10.5 FP1 IC94758 http://www.ibm.com/support/docview.wss?uid=swg27007053
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 Guide
On-line Calculator V2
CHANGE HISTORY:
August 22, 2013: Original version published.
*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.
Cross reference information
Segment Product Component Platform Version Edition
Information Management DB2 Connect 9.7, 10.1, 10.5
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