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Security Bulletin: IBM MQ Appliance is affected by an OpenSSL vulnerability (CVE-2018-0734)

Security Bulletin


IBM MQ Appliance has addressed the following OpenSSL vulnerability.

Vulnerability Details

CVEID: CVE-2018-0734
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive information, caused by a timing side channel attack in the DSA signature algorithm. An attacker could exploit this vulnerability using variations in the signing algorithm to recover the private key.
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 MQ Appliance 9.1 Long Term Support (LTS) Release
Maintenance levels between and

IBM MQ Appliance 9.1.x Continuous Delivery (CD) Release
Continuous delivery update 9.1.1


IBM MQ Appliance 9.1 Long Term Support (LTS) Release
Apply fix pack, or later

IBM MQ Appliance 9.1.x Continuous Delivery (CD) Release
Apply continuous delivery update 9.1.2, or later.

Workarounds and Mitigations


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Change History

11th April 2019 : 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.


Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Internal Use Only

PSIRT advisory 13870
PSIRT product record 125420

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Document Information

Modified date:
11 April 2019