Security Bulletin: IBM MQ Appliance is affected by a denial of service vulnerability (CVE-2018-0732)

Summary

IBM MQ Appliance has addressed the following denial of service vulnerability.

Vulnerability Details

CVEID: CVE-2018-0732
**DESCRIPTION:*OpenSSL is vulnerable to a denial of service, caused by the sending of a very large prime value to the client by a malicious server during key agreement in a TLS handshake. By spending an unreasonably long period of time generating a key for this prime, a remote attacker could exploit this vulnerability to cause the client to hang.
CVSS Base Score: 3.7
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/144658&gt; for the current score
CVSS Environmental Score: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

IBM MQ Appliance 8.0
Maintenance levels between 8.0.0.0 and 8.0.0.10

IBM MQ Appliance 9.0.x Continuous Delivery (CD) Release
Continuous delivery updates 9.0.1 and 9.0.5

IBM MQ Appliance 9.1 Long Term Support (LTS) Release
Maintenance level 9.1.0.0

Remediation/Fixes

IBM MQ Appliance 8.0
Apply fixpack 8.0.0.11 or later.

IBM MQ Appliance 9.0.x Continuous Delivery (CD) Release
Apply 9.1.0.1 Long Term Support (LTS) Release , or 9.1.1 Continuous Delivery Release or later.

IBM MQ Appliance 9.1 Long Term Support (LTS) Release
Apply fixpack 9.1.0.1 or later.

Workarounds and Mitigations

None