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AUSCERT External Security Bulletin Redistribution
ESB-2012.0600
DB2 Denial of Service Vulnerability in DRDA
22 June 2012
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM DB2
Publisher: IBM
Operating System: AIX
Linux variants
HP-UX
Solaris
Windows
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2012-2180
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21597090
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Security Bulletin: DB2 Denial of Service Vulnerability in DRDA (CVE-2012-2180)
Flash (Alert)
Abstract
Vulnerability in IBM DB2 server products could allow a specially-crafted DRDA
request to cause disruption to the server.
VULNERABILITY DETAILS
CVE ID: CVE-2012-2180
DESCRIPTION:
A vulnerability in the IBM DB2 products listed below could allow an
unauthenticated, remote attacker to cause a denial of service. The
vulnerability exists in the Distributed Relational Database Architecture (DRDA)
module that handles DRDA chaining. A malicious user with knowledge of DRDA
could send a specially crafted request to a database server to cause
disruptions or a crash. The vulnerability exists on all supported platforms.
The DB2 server reaction to the attack differs depending on the configuration
and platform. On all platforms, with the exception of Windows 64-bit, when DB2
Trap Resiliency is enabled, the trap is sustained. Even though the trap is
sustained and the DB2 server is able to continue operation, the resources
consumed by the trapped thread are not released and hence, a continuous attack
will eventually disable the DB2 server.
DB2 on Windows 64-bit is missing the db2sys64.pdb file which causes Trap
Resiliency to fail to sustain the trap.
CVSS:
CVSS Base Score: 4.3
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/75418 for the current
score
CVSS Environmental Score*: Undefined
CVSS String: (AV:N/AC:M/Au:N/C:N/I:N/A:P)
DB2 RELEASES AFFECTED:
DB2 Version 9.7 GA through to Version 9.7 Fix Pack 5.
DB2 Version 9.8 GA through to Version 9.8 Fix Pack 4.
AFFECTED PLATFORMS:
The following IBM V9.7 editions running on AIX, Linux, HP, Solaris and Windows:
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
The following IBM V9.8 editions running on AIX and Linux:
IBM DB2 pureScale Feature for Enterprise Server Edition
REMEDIATION:
There is no workaround nor mitigation. A fix is available for download and we
recommend you apply the appropriate fix. The vulnerability is not applicable to
DB2 V9.1, V9.5 and V10.1
Fix:
The fix for this vulnerability is available for download for DB2 release V9.7
Fix Pack 6 and V9.8 Fix Pack 5.
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
V9.7 FP6 IC82234 http://www.ibm.com/support/docview.wss?uid=swg24032754
V9.8 FP5 IC82367 http://www.ibm.com/support/docview.wss?uid=swg24032798
REFERENCES:
Complete CVSS Guide
On-line Calculator V2
X-Force Vulnerability Database
CVE-2012-2180
*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: IBMs statements regarding its plans, directions, and intent are subject
to change or withdrawal without notice at IBMs 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.
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