ESB-2017.2512 - [OpenVMS] IBM Sterling Connect: Access privileged data - Remote/unauthenticated 2017-10-05

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2512
         Security Bulletin: Vulnerabilities in OpenSSL affect IBM
            Sterling Connect:Direct for OpenVMS (CVE-2016-2183)
                              5 October 2017

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

Product:           IBM Sterling Connect
Publisher:         IBM
Operating System:  OpenVMS
Impact/Access:     Access Privileged Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-2183  

Reference:         ASB-2017.0102
                   ESB-2017.2469
                   ESB-2017.2326
                   ESB-2017.2265
                   ESB-2017.2008
                   ESB-2017.1959

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=swg22008947

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Security Bulletin: Vulnerabilities in OpenSSL affect IBM Sterling
Connect:Direct for OpenVMS (CVE-2016-2183)

Security Bulletin

Document information

More support for:
Sterling Connect:Direct for OpenVMS

Software version:
3.6

Operating system(s):
OpenVMS

Software edition:
All Editions

Reference #:
2008947

Modified date:
04 October 2017

Summary

OpenSSL is used by IBM Sterling Connect:Direct for OpenVMS. IBM Sterling
Connect:Direct for OpenVMS has addressed the applicable CVEs.

Vulnerability Details

CVEID: CVE-2016-2183
DESCRIPTION:
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
https://exchange.xforce.ibmcloud.com/vulnerabilities/116337
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

Remediation/Fixes

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 3.6.0.5, available on Fix Central

Workarounds and Mitigations

In versions of IBM Sterling Connect:Direct for OpenVMS older than 3.6.0.5,
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.

Important note

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 
potential risk.

References

Complete CVSS v3 Guide
On-line Calculator v3

Related information

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.

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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