#VU13507 Man-in-the-middle attack in IBM MQ - CVE-2018-1374

Vulnerability identifier: #VU13507

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-2018-1374

CWE-ID: CWE-300

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 conduct man-in-the-middle attack on the target system.

The weakness exists in IBM MQ Managed .NET Client due to improper validation of the SSL certificate. A remote attacker can use man-in-the-middle techniques and cause a SIGSEGV in the channel process amqrmppa.

Mitigation
Install update from vendor's website.

Vulnerable software versions

IBM MQ: 7.1, 7.1.0.1 - 7.1.0.9, 7.5, 7.5.0.1 - 7.5.0.8, 8.0, 8.0.0.0 - 8.0.0.8, 9.0.0 - 9.0.4

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External links
https://www-01.ibm.com/support/docview.wss?uid=swg22012982&myns=swgws&mynp=OCSSYHRD&a...

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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.