Security Bulletin: IBM DB2 Security Vulnerability in SQLJ.DB2_INSTALL_JAR (CVE-2012-2194).

Flash (Alert)


Abstract

Vulnerability in IBM DB2 could allow an authenticated user, without proper authorization, to overwrite JAR files.

Content

VULNERABILITY DETAILS

CVE ID: CVE-2012-2194

DESCRIPTION:

The IBM DB2 products listed below contain a security vulnerability that could
allow an authenticated user, without proper authority, to overwrite JAR files.

SQLJ.DB2_INSTALL_JAR is a built-in stored procedure used to install JAR files to be used by Java stored procedures. A malicious user could use the stored procedure to replace existing JAR files and achieve remote code execution.

To exploit the vulnerability, the user would need to have valid security credentials to connect to the database and execute the SQLJ.DB2_INSTALL_JAR stored procedure. By default, PUBLIC is granted EXECUTE privilege to SQLJ.DB2_INSTALL_JAR. To reduce the exposure, revoke the EXECUTE privilege from PUBLIC and only grant EXECUTE to users that have a need to install JAR files.



CVSS:
CVSS Base Score: 9
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/76117 for the current score
CVSS Environmental Score*: Undefined
CVSS String: (AV:N/AC:L/Au:S/C:C/I:C/A:C)


AFFECTED PLATFORMS:

The vulnerability only affects the Windows platform. AIX, Linux, Solaris and HP are not affected. The following IBM DB2 V9.1, V9.5, V9.7 and V10.1 editions running on Windows are affected:


IBM® DB2® 10.1 Express Edition
IBM® DB2® 10.1 Workgroup Server Edition
IBM® DB2® 10.1 Enterprise Server Edition
IBM® DB2® 10.1 Advanced Enterprise Server Edition
IBM® DB2® Connect™ 10.1 Application Server Edition
IBM® DB2® Connect™ 10.1 Enterprise Edition
IBM® DB2® Connect™ 10.1 Unlimited Edition for System i®
IBM® DB2® Connect™ 10.1 Unlimited Edition for System z®

IBM® DB2® 9.7 Express Edition
IBM® DB2® 9.7 Workgroup Server Edition
IBM® DB2® 9.7 Enterprise Server Edition
IBM® DB2® 9.7 Advanced Enterprise Server Edition
IBM® DB2® Connect™ 9.7 Application Server Edition
IBM® DB2® Connect™ 9.7 Enterprise Edition
IBM® DB2® Connect™ 9.7 Unlimited Edition for System i®
IBM® DB2® Connect™ 9.7 Unlimited Edition for System z®

IBM® DB2® 9.5 Express Edition
IBM® DB2® 9.5 Workgroup Server Edition
IBM® DB2® 9.5 Enterprise Server Edition
IBM® DB2® 9.5 Advanced Enterprise Server Edition
IBM® DB2® Connect™ 9.5 Application Server Edition
IBM® DB2® Connect™ 9.5 Enterprise Edition
IBM® DB2® Connect™ 9.5 Unlimited Edition for System i®
IBM® DB2® Connect™ 9.5 Unlimited Edition for System z®

IBM® DB2® 9.1 Express Edition
IBM® DB2® 9.1 Workgroup Server Edition
IBM® DB2® 9.1 Enterprise Server Edition
IBM® DB2® 9.1 Advanced Enterprise Server Edition
IBM® DB2® Connect™ 9.1 Application Server Edition
IBM® DB2® Connect™ 9.1 Enterprise Edition
IBM® DB2® Connect™ 9.1 Unlimited Edition for System i®
IBM® DB2® Connect™ 9.1 Unlimited Edition for System z®

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

REMEDIATION:
The recommended solution is to apply the appropriate fix for this vulnerability. Mitigation is also available.

Fix:
The fix for this vulnerability is available for download.

In general, DB2 fix packs can be downloaded from the following site: http://www.ibm.com/support/docview.wss?uid=swg27007053. You may download the specific fix pack you need from the following:

Release APAR Download URL
V9.1 FP12 IC84019 http://www.ibm.com/support/docview.wss?uid=swg24033023
V9.5 FP10 IC84711 http://www.ibm.com/support/docview.wss?uid=swg24033308
V9.7 FP7 IC84714 http://www.ibm.com/support/docview.wss?uid=swg24033685
V10.1 FP1 IC84716 http://www.ibm.com/support/docview.wss?uid=swg24033451


Workaround:
None known; apply fixes

Mitigation:
To exploit the vulnerability, the user would need to be able to connect to the database and call the stored procedure SQLJ.DB2_INSTALL_JAR. Revoking EXECUTE privilege from PUBLIC on the stored procedure would allow you to control who can call the stored procedure. Use the following SQL statement to revoke the privilege:

REVOKE EXECUTE ON SQLJ.DB2_INSTALL_JAR FROM PUBLIC

To obtain more information on the REVOKE routine privileges statement, see the following for DB2 V10.1. The statement syntax is the same for other DB2 releases.

DB2 V10.1:
http://publib.boulder.ibm.com/infocenter/db2luw/v10r1/topic/com.ibm.db2.luw.sql.ref.doc/doc/r0007700.html


REFERENCES:



ACKNOWLEDGEMENT:
This vulnerability was reported to IBM by Martin Rakhmanov of Application Security Inc.


CHANGE HISTORY:
August 8, 2012 - Document created.
August 21, 2012 - V9.5 FP10 has shipped. Updated document to include V9.5 FP10 download URL.
September 17, 2012 - V10.1 FP1 has shipped. Updated document to include V10.1 FP1 download URL.
November 6, 2012 - V9.7 FP7 has shipped. Updated document to include V9. FP7 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.


Cross reference information
Segment Product Component Platform Version Edition
Information Management DB2 Connect 9.7, 9.5, 9.1, 10.1

Rate this page:

(0 users)Average rating

Document information


More support for:

DB2 for Linux, UNIX and Windows
Application Programming - DB2 Built-in functions/Built-in UDFs

Software version:

9.1, 9.5, 9.7, 10.1

Operating system(s):

Windows

Software edition:

Advanced Enterprise Server, Enterprise Server, Express, Express-C, Personal, Workgroup Server

Reference #:

1607622

Modified date:

2012-11-07

Translate my page

Machine Translation

Content navigation