Security Bulletin: IBM MQ Advanced Message Security is vulnerable to an OpenSSL Montgomery squaring function propagation flaw (CVE-2017-3736)
IBM MQ and IBM WebSphere MQ are affected by an OpenSSL vulnerability which could allow a remote attacker to obtain sensitive information. This is caused by a carry propagation flaw in the the x86_64 Montgomery squaring function bn_sqrx8x_internal().
OpenSSL is used by IBM MQ Advanced Message Security on the IBM i platform only.
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive information, caused by a carry propagation flaw in the the x86_64 Montgomery squaring function bn_sqrx8x_internal(). An attacker with online access to an unpatched system could exploit this vulnerability to obtain information about the private key.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/134397 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
Affected Products and Versions
IBM MQ v8.0
- Maintenance levels 188.8.131.52 - 184.108.40.206
IBM MQ v9 LTS
- Maintenance levels 220.127.116.11 - 18.104.22.168
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ReferencesComplete CVSS v3 Guide
On-line Calculator v3
Related informationIBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
17 April 2018: Original version published
24 April 2018: Correct incorrect reference to v7.0.1 and v7.1 as these versions are not affected
25 April 2018: Made bulletin clearer that vulnerability only affects AMS on IBM i
*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.
|Business Integration||IBM MQ Advanced Message Security|
More support for:
WMQ Advanced Message Security
Software version: 8.0, 22.214.171.124, 126.96.36.199, 188.8.131.52, 184.108.40.206, 220.127.116.11, 18.104.22.168, 22.214.171.124, 126.96.36.199, 9.0, 188.8.131.52, 184.108.40.206
Operating system(s): IBM i
Software edition: All Editions
Reference #: 2013025
Modified date: 26 April 2018
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