IBM ILOG CPLEX Optimization Studio: Denial of Service -- Remote with User Interaction

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.3622
        The Community Edition of IBM ILOG CPLEX Optimization Studio
                 is affected by a vulnerability in libcurl
                             21 November 2018

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           IBM ILOG CPLEX Optimization Studio
Publisher:         IBM
Operating System:  Windows
Impact/Access:     Denial of Service -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-16840  

Reference:         ESB-2018.3517
                   ESB-2018.3472
                   ESB-2018.3448
                   ESB-2018.3423.2

Original Bulletin: 
   https://www.ibm.com/support/docview.wss?uid=ibm10739961

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Security Bulletin: The Community Edition of IBM ILOG CPLEX Optimization Studio
is affected by a vulnerability in libcurl (CVE-2018-16840)

Security Bulletin

Document information

More support for: IBM ILOG CPLEX Optimization Studio

Software version: 12.8

Operating system(s): Windows

Software edition: Community Edition

Reference #: 0739961

Modified date: 19 November 2018

Summary

The Community Edition of IBM ILOG CPLEX Optimization Studio on Windows platform
only has addressed the following vulnerability: libcurl is vulnerable to a
denial of service.

Vulnerability Details

CVEID: CVE-2018-16840
DESCRIPTION: cURL is vulnerable to a denial of service, caused by a heap
use-after-free flaw in the Curl_close function. By sending a specially-crafted
request, a remote attacker could exploit this vulnerability to cause a denial
of service condition.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
152299 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:N/A:L)

Affected Products and Versions

Affected IBM ILOG CPLEX Optimization Studio Affected Versions
IBM ILOG CPLEX Optimization Studio          12.8

 

Remediation/Fixes

Please replace the initial DLL version 7.54.1.0 with the fixed version 7.60.0.0
available on Fix Central.
MD checksum: 04e1fe45fce57cd33a7b803230d06c35

For information, here is the path of the DLL:

<Installation directory>\cplex\bin\x64_win64\libcurl.dll


Workarounds and Mitigations

There is no workaround or mitigation.

Reference

Complete CVSS v3 Guide
On-line Calculator v3

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

19 November 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.

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