IBM DB2 contains a vulnerability in which an ALTER TABLE statement may cause the DB2 server to terminate abnormally when AUTO_REVAL is set to IMMEDIATE . This could result in a DB2 server crash; if so, the server would need to be restarted.
CVE ID: CVE-2014-6159
IBM DB2 contains a disruption of service vulnerability. A remote, authenticated DB2 user could exploit this vulnerability when DB2 is configured with immediate auto revalidation (i.e. AUTO_REVAL configuration parameter is set to IMMEDIATE). The user would need valid security credentials to connect to the database and would need to execute specially crafted ALTER table statements (that require control privileges on the target table). Note: the AUTO_REVAL configuration parameter is set to DEFERRED by default.
CVSS Base Score: 6.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/97708 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:S/C:N/I:N/A:C)
Affected Products and Versions
All fix pack levels of IBM DB2 V9.7, V10.1 and V10.5 editions listed below and running on AIX, Linux, HP, Solaris or Windows are affected.
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 DB2 Connect products mentioned are affected only if a local database has been created.
IBM® DB2® pureScale™ Feature for Enterprise Server Edition, V9.8, running on AIX or Linux is affected.
The recommended solution is to apply the appropriate fix for this vulnerability.
The fix for DB2 and DB2 Connect release V9.7 is in V9.7 FP10, V10.1 is in V10.1 FP5 and V10.5 is in V10.5 FP5, available for download from Fix Central.
Customers running any vulnerable fixpack level of an affected Program, V9.8 can contact support to obtain a special build containing an interim fix for this issue. The special build is available based on the most recent fixpack level for each impacted release: DB2 V9.8 FP5. It can be applied to any affected fixpack level of the appropriate release to remediate this vulnerability. Additionally fixes based on 9.7 FP9a or DB2 V10.1 FP4 will be made available on request.
Refer to the folowing chart to determine how to proceed to obtain a needed fixpack or special build.
|Release||Fixed in fix pack||APAR||Download URL|
|V9.8||TBD||IT05132||Please contact technical support.|
Contact Technical Support:
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Workarounds and Mitigations
Update the DB2 configuration parameter AUTO_REVAL to any value other than IMMEDIATE.
Get Notified about Future Security Bulletins
November 5, 2014: Original Version Published
December 11, 2014: Added V10.5 FP5 download URL
July 10, 2015: Updated with V10.1 FP5 fix info
*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 Security Bulletin.
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 FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
16 June 2018