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Vulnerability of IBM MQ: denial of service via PCF

Synthesis of the vulnerability 

An attacker can send malicious PCF packets to IBM MQ, in order to trigger a denial of service.
Vulnerable systems: QRadar SIEM, WebSphere MQ.
Severity of this threat: 2/4.
Creation date: 18/09/2019.
Références of this weakness: 6344075, 886885, CVE-2019-4378, VIGILANCE-VUL-30356.

Description of the vulnerability 

An attacker can send malicious PCF packets to IBM MQ, in order to trigger a denial of service.
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This cybersecurity weakness impacts software or systems such as QRadar SIEM, WebSphere MQ.

Our Vigil@nce team determined that the severity of this security vulnerability is medium.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this vulnerability bulletin.

Solutions for this threat 

IBM MQ: fixed versions for PCF.
The following versions are fixed:
  IBM MQ 8.x: 8.0.0.13 https://www.ibm.com/support/pages/node/1073376
  IBM MQ 9.0.x: 9.0.0.7 https://www-01.ibm.com/support/docview.wss?uid=ibm10887223
  IBM MQ 9.1.x: 9.1.0.3 https://www-01.ibm.com/support/docview.wss?uid=ibm10961534
  IBM MQ 9.1.x CD: 9.1.3 https://www-01.ibm.com/support/docview.wss?uid=swg24043697

IBM QRadar SIEM: patch for Components.
A patch is indicated in information sources.
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