ESB-2018.3266 - [Win][Linux][HP-UX][Solaris][AIX] IBM InfoSphere Information Server: Denial of service - Remote/unauthenticated 2018-10-25

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.3266
         Security Bulletin: A vulnerability in OpenSSL affects IBM
               InfoSphere Information Server (CVE-2018-0732)
                              25 October 2018

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

Product:           IBM InfoSphere Information Server
Publisher:         IBM
Operating System:  AIX
                   HP-UX
                   Linux variants
                   Solaris
                   Windows
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-0732  

Reference:         ASB-2018.0272
                   ASB-2018.0271
                   ASB-2018.0265
                   ASB-2018.0250
                   ASB-2018.0241
                   ESB-2018.3221
                   ESB-2018.3014

Original Bulletin: 
   https://www.ibm.com/support/docview.wss?uid=ibm10737297

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Security Bulletin: A vulnerability in OpenSSL affects IBM InfoSphere
Information Server (CVE-2018-0732)

Document information

More support for: InfoSphere Information Server

Software version: 9.1, 11.3, 11.5, 11.7

Operating system(s): AIX, HP-UX, Linux, Solaris, Windows

Reference #: 0737297

Modified date: 24 October 2018

Security Bulletin

Summary

A vulnerability in OpenSSL was addressed by IBM InfoSphere Information Server.

Vulnerability Details

CVEID: CVE-2018-0732
DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by the
sending of a very large prime value to the client by a malicious server during
key agreement in a TLS handshake. By spending an unreasonably long period of
time generating a key for this prime, a remote attacker could exploit this
vulnerability to cause the client to hang.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
144658 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

The following products, running on all supported platforms, are affected:
    IBM InfoSphere Information Server: versions 9.1, 11.3, 11.5, and 11.7
    IBM InfoSphere Information Server on Cloud: versions 11.5, and 11.7

Remediation/Fixes

None.

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 Information Server Technical
Support.

Workarounds and Mitigations

Disable the use of Diffie-Hellman ciphers.

Reference

Complete CVSS v3 Guide
On-line Calculator v3

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

24 October 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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