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Security Bulletin: IBM® DB2® contains a denial of service vulnerability in scalar functions (CVE-2018-1977)

Security Bulletin


Summary

IBM DB2 contains a denial of service vulnerability on Linux System z® platform. A remote, authenticated DB2 user could exploit this vulnerability by executing a specially-crafted SQL statement with the TRUNCATE scalar functions. This could result in a DB2 server crash; if so, the server would need to be restarted.

Vulnerability Details

CVEID: CVE-2018-1977
DESCRIPTION: IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) contains a denial of service vulnerability. A remote, authenticated DB2 user could exploit this vulnerability by issuing a specially-crafted SELECT statement with TRUNCATE function.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/154032 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

All fix pack levels of IBM Db2 V11.1 editions on Linux System z® platforms are affected. Other platforms are not affected.

Remediation/Fixes

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

FIX:

The fix for DB2 V11.1 is in V11.1.4.4, available for download from Fix Central.

Release Fixed in fix pack APAR Download URL
V11.1 FP4 IT25162 http://www.ibm.com/support/docview.wss?uid=ibm10741687

Workarounds and Mitigations

None.

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Reference

Complete CVSS v3 Guide
On-line Calculator v3

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

December 12, 2018: Original Version Published.

*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.

Disclaimer

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.

Document information

More support for: DB2 for Linux, UNIX and Windows

Software version: 11.1

Operating system(s): Linux

Software edition: Advanced Enterprise Server, Advanced Workgroup Server, Enterprise Server, Express, Express-C, Person

Reference #: 0788089

Modified date: 12 December 2018