#VU15812 Denial of service in IBM MQ - CVE-2018-1684

Vulnerability identifier: #VU15812

Vulnerability risk: Low

CVSSv4.0: 2.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-1684

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
IBM MQ
Server applications / Other server solutions

Vendor: IBM Corporation

Description
The vulnerability allows a remote authenticated attacker to cause DoS condition on the target system.

The weakness exists due to a problem within the IBM MQ MQTT Service logic. A remote attacker can trigger an error with MQTT topic string publishing and cause a denial of service attack to be executed against MQTT clients attempting to connect to the queue manager.

Mitigation
Install update from vendor's website.

Vulnerable software versions

IBM MQ: 8.0.0.0 - 8.0.0.10, 9.0.0 - 9.0.5, 9.1.0.0

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External links
https://www-01.ibm.com/support/docview.wss?uid=ibm10734297&myns=swgws&mynp=OCSSYHRD&...

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.