Denial of service in IBM MQ

1) Man-in-the-middle attack

EUVDB-ID: #VU13507

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 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')

Exploit availability: No

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 - 9.0.4

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_mq:7.1:*:*:*:*:*:*:*
• cpe:2.3:a:ibm_corporation:ibm_mq:7.1.0.9:*:*:*:*:*:*:*
• cpe:2.3:a:ibm_corporation:ibm_mq:7.5:*:*:*:*:*:*:*
• cpe:2.3:a:ibm_corporation:ibm_mq:7.5.0.8:*:*:*:*:*:*:*
• cpe:2.3:a:ibm_corporation:ibm_mq:8.0:*:*:*:*:*:*:*
• cpe:2.3:a:ibm_corporation:ibm_mq:8.0.0.8:*:*:*:*:*:*:*
• cpe:2.3:a:ibm_corporation:ibm_mq:9.0.4:*:*:*:*:*:*:*

External links

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

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.