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AUSCERT External Security Bulletin Redistribution
Security Bulletin: Vulnerabilities in OpenSSL affect IBM
Sterling Connect:Direct for OpenVMS (CVE-2016-2183)
5 October 2017
AusCERT Security Bulletin Summary
Product: IBM Sterling Connect
Operating System: OpenVMS
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
CVE Names: CVE-2016-2183
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Security Bulletin: Vulnerabilities in OpenSSL affect IBM Sterling
Connect:Direct for OpenVMS (CVE-2016-2183)
More support for:
Sterling Connect:Direct for OpenVMS
04 October 2017
OpenSSL is used by IBM Sterling Connect:Direct for OpenVMS. IBM Sterling
Connect:Direct for OpenVMS has addressed the applicable CVEs.
OpenSSL could allow a remote attacker to obtain sensitive information, caused
by an error in the Triple-DES on 64-bit block cipher, used as a part of the
SSL/TLS protocol. By capturing large amounts of encrypted traffic between the
SSL/TLS server and the client, a remote attacker able to conduct a man-in-
the-middle attack could exploit this vulnerability to recover the plaintext
data and obtain sensitive information. This vulnerability is known as the
SWEET32 Birthday attack.
CVSS Base Score: 3.7
CVSS Temporal Score: See
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)
Affected Products and Versions
IBM Sterling Connect:Direct for OpenVMS 3.6.0
The recommended solution is to apply the fix as soon as practical. Please see
below for information about the available fixes.
VRMF APAR Remediation/First Fix
3.6.0 IT22551 Apply Fix Pack 220.127.116.11, available on Fix Central
Workarounds and Mitigations
In versions of IBM Sterling Connect:Direct for OpenVMS older than 18.104.22.168,
deselect the Triple-DES (3DES) cipher suite if it is specified in the Secure+
configuration. To avoid production outages when switching to another cipher,
coordinate the configuration change to an agreed cipher with the security
administrator of each remote node with which you use Secure+. The recommended
cipher suite is AES128-SHA or AES256-SHA.
IBM strongly suggests that all System z customers be subscribed to the System
z Security Portal to receive the latest critical System z security and
integrity service. If you are not subscribed, see the instructions on the
System z Security web site. Security and integrity APARs and associated fixes
will be posted to this portal. IBM suggests reviewing the CVSS scores and
applying all security or integrity fixes as soon as possible to minimize any
Complete CVSS v3 Guide
On-line Calculator v3
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
*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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