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Security Bulletin: IBM® DB2® LUW on AIX and Linux Affected by a Vulnerability in GPFS (CVE-2016-2119)

Security Bulletin


DB2 LUW is affected by a vulnerability in IBM® Spectrum Scale Version 4.1.1 that is used by DB2® pureScale™ Feature on AIX and Linux.

IBM Spectrum Scale is previously known as General Parallel File System (GPFS),

Vulnerability Details

CVEID: CVE-2016-2119
Samba could allow a remote attacker to conduct spoofing attacks. A man-in-the-middle attacker could exploit this vulnerability to inject the SMB2_SESSION_FLAG_IS_GUEST or SMB2_SESSION_FLAG_IS_NULL flags to downgrade the client's configuration-required signing protections for SMB2 or SMB3 client connections and spoof the server.
CVSS Base Score: 5.3
CVSS Temporal Score: See for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

Affected Products and Versions

All fix pack levels of IBM DB2 V10.5 and V11.1.1 editions listed below, running on AIX and Linux are affected, and only for those customers who have DB2® pureScale™ Feature installed.

IBM DB2 Enterprise Server Edition
IBM DB2 Workgroup Server Edition
IBM DB2 Advanced Enterprise Server Edition
IBM DB2 Advanced Workgroup Server Edition
IBM DB2 Direct Advanced Edition
IBM DB2 Direct Standard Edition


The recommended solution is to apply the appropriate fix for this vulnerability.


The fix for DB2 V11.1.1 is in V11.1.1 FP1, available for download from Fix Central.

Customers running any vulnerable fixpack level of an affected Program, V10.5 can contact IBM technical support to obtain the GPFS eFix. Before installing the GPFS eFix, the DB2 level might need to be upgraded to the level that includes the supported GPFS level. Do not attempt to upgrade GPFS by any other means. The table below lists the DB2 releases, the prerequisite that needs to be installed first and the GPFS efix to request from IBM technical support.

DB2 ReleaseInstall following prerequisite before installing efixObtain following GPFS efix from IBM technical support
10.510.5 FP8gpfs.smb 4.2.2_gpfs_31-9

The GPFS efix install instructions are available here:

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.

Workarounds and Mitigations


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Change History

December 15, 2016: Original version published.
December 29, 2016: Added product clarification, and removed extra spaces.

*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.


Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

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Document Information

Modified date:
16 June 2018