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Security Bulletin: IBM® Db2® is vulnerable to buffer overflow (CVE-2018-1459).

Security Bulletin


Db2's rah.exe is vulnerable to a stack-based buffer overflow, caused by improper bounds checking, which could lead an attacker to execute arbitrary code.

Vulnerability Details

CVEID: CVE-2018-1459
DESCRIPTION: IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) is vulnerable to stack based buffer overflow, caused by improper bounds checking which could lead an attacker to execute arbitrary code.
CVSS Base Score: 8.4
CVSS Temporal Score: See for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

All fix pack levels of IBM Db2 V9.7, V10.1, V10.5, and V11.1 editions on Windows platform are affected. Unix-type platforms are not affected.


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

The fix for DB2 V11.1 is in V11.1.3.3 iFix001, available for download from Fix Central.

Customers running any vulnerable fixpack level of an affected Program, V9.7, V10.1, and V10.5, can download the special build containing the interim fix for this issue from Fix Central. These special builds are available based on the most recent fixpack level for each impacted release: DB2 V9.7 FP11, V10.1 FP6, and V10.5 FP9. They can be applied to any affected fixpack level of the appropriate release to remediate this vulnerability.

Release Fixed in fix pack APAR Download URL
V9.7 TBD IT24466 Special Build for V9.7 FP11:

Windows 32-bit, x86
Windows 64-bit, x86

V10.1 TBD IT24465 Special Build for V10.1 FP6:

Windows 32-bit, x86
Windows 64-bit, x86

V10.5 FP10 IT24464
V11.1.3.3 iFix001 IT24311

Workarounds and Mitigations


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The vulnerability was reported to IBM by Quentin Rhoads-Herrera.

Change History

May 22, 2018: Original Version Published.
May 23, 2018: Added name of the executable.
June 11, 2018: Added download links for 9.7 and 10.1 Windows builds.
July 11, 2018: Updated 10.5 version with a link to 10.5 FP10 image.

*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.

[{"Product":{"code":"SSEPGG","label":"Db2 for Linux, UNIX and Windows"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Component":"--","Platform":[{"code":"PF033","label":"Windows"}],"Version":"9.7;10.1;10.5;11.1","Edition":"Advanced Enterprise Server;Advanced Workgroup Server;Enterprise Server;Express;Express-C;Personal;Workgroup Server","Line of Business":{"code":"LOB10","label":"Data and AI"}}]

Document Information

Modified date:
11 July 2018