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AUSCERT External Security Bulletin Redistribution
Security Bulletin: IBM MessageSight affected by GSKit
Sweet32 Birthday attacks (CVE-2016-2183)
9 March 2017
AusCERT Security Bulletin Summary
Product: IBM MessageSight
Operating System: Network Appliance
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
CVE Names: CVE-2016-2183
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Security Bulletin: IBM MessageSight affected by GSKit Sweet32 Birthday attacks
More support for: IBM MessageSight
Software version: 1.1, 1.2, 2.0
Operating system(s): Platform Independent
Reference #: 1999452
Modified date: 08 March 2017
IBM MessageSight is affected by a GSKit vulnerability in the MQClient.
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive
information, caused by an error in the DES/3DES 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
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 MessageSight v1.1 - 126.96.36.199
IBM MessageSight v1.2 188.8.131.52
IBM MessageSight v2.0 - 184.108.40.206
Product VRMF APAR Remediation/First Fix
IBM MessageSight 1.2 IT19404 220.127.116.11-IBM-IMA-IFIT19404
IBM MessageSight 1.1 IT19404 18.104.22.168-IBM-IMA-IFIT19404
IBM MessageSight 2.0 IT19404 22.214.171.124-IBM-IMA-IFIT19404
Workarounds and Mitigations
Disable 3DES ciphers in connected servers or clients.
Complete CVSS v3 Guide
On-line Calculator v3
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
7 March 2017: Original document 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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