A vulnerability was found within the error logging function that meant that a local attacker could cause an overwrite of arbitrary MQ files and cause a denial of service attack against IBM MQ queue managers.
DESCRIPTION: IBM MQ could allow a local attacker to cause a denial of service within the error log reporting system.
CVSS Base Score: 6.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/156163 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Affected Products and Versions
Workarounds and Mitigations
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The vulnerability was reported to IBM by Josh McIver
16 May 2019: Original version published
12 June 2019: Updated to confirm affected levels of IBM MQ version 9.0 and provide link to mitigation for this release
28 August 2019: Updated 9.0 LTS remediation instructions to specify FixPack to apply.
*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.
Internal Use Only
16 September 2019