Vulnerability identifier: #VU22922

Vulnerability risk: Low

CVSSv3.1: 3.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-16546

CWE-ID: CWE-300

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Google Compute Engine
Web applications / Modules and components for CMS

Vendor: Jenkins

Description

The vulnerability allows a remote attacker to perform a man-in-the-middle (MitM) attack.

The vulnerability exists due to the affected plugin does not use SSH host key verification when connecting to VMs launched by the plugin. A remote attacker can perform a man-in-the-middle attack to intercept these connections to attacker-specified build agents without warning.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Google Compute Engine: 1.0 - 4.1.1

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External links
http://jenkins.io/security/advisory/2019-11-21/#SECURITY-1584

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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