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AUSCERT External Security Bulletin Redistribution
Security Bulletin: A vulnerability in OpenSSL affects IBM
InfoSphere Information Server (CVE-2018-0732)
25 October 2018
AusCERT Security Bulletin Summary
Product: IBM InfoSphere Information Server
Operating System: AIX
Impact/Access: Denial of Service -- Remote/Unauthenticated
CVE Names: CVE-2018-0732
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Security Bulletin: A vulnerability in OpenSSL affects IBM InfoSphere
Information Server (CVE-2018-0732)
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
A vulnerability in OpenSSL was addressed by IBM InfoSphere Information Server.
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
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
Workarounds and Mitigations
Disable the use of Diffie-Hellman ciphers.
Complete CVSS v3 Guide
On-line Calculator v3
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
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.
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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