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Security Bulletin: IBM MQ is vulnerable to issues in Eclipse (CVE-2023-4218, CVE-2023-44487)

Security Bulletin


IBM MQ has addressed vulnerabilities in Eclipse, which is used in IBM MQ Explorer.

Vulnerability Details

CVEID:   CVE-2023-4218
DESCRIPTION:   Eclipse IDE could allow a local authenticated attacker to obtain sensitive information, caused by improper handling of XML external entity (XXE) declarations. By persuading a victim to open specially crafted XML content, an attacker could exploit this vulnerability to obtain sensitive information, and use this information to launch further attacks against the affected system.
CVSS Base score: 5
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N)

CVEID:   CVE-2023-44487
DESCRIPTION:   Multiple vendors are vulnerable to a denial of service, caused by a flaw in handling multiplexed streams in the HTTP/2 protocol. By sending numerous HTTP/2 requests and RST_STREAM frames over multiple streams, a remote attacker could exploit this vulnerability to cause a denial of service due to server resource consumption.
CVSS Base score: 7.5
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Affected Product(s) Version(s)

The following installable MQ components are affected by the vulnerability:

- IBM MQ Explorer

If you are running any of these listed components, please apply the remediation/fixes as described below. For more information on the definitions of components used in this list see


These issues were addressed under APARs IT45240 and IT45350

IBM MQ version 9.0 LTS

Apply Cumulative Security Update 

IBM MQ version 9.1 LTS

Apply Fix Pack 

IBM MQ version 9.2 LTS

Apply Cumulative Security Update  

IBM MQ version 9.3 CD

Upgrade to IBM MQ version 9.3.5 CD 

Workarounds and Mitigations


Get Notified about Future Security Bulletins




Change History

29 Feb 2024: Initial Publication

*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. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.

Document Location


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Document Information

Modified date:
29 February 2024