#VU26567 Command Injection in strong-nginx-controller - CVE-2020-7621

Vulnerability identifier: #VU26567

Vulnerability risk: High

CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2020-7621

CWE-ID: CWE-77

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
strong-nginx-controller
Web applications / Modules and components for CMS

Vendor: IBM Corporation

Description

The vulnerability allows a remote attacker to execute arbitrary commands on the system.

The vulnerability exists due to improper input validation in the first argument of "_nginxCmd()" function. A remote attacker can execute arbitrary commands on the target system. 

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

strong-nginx-controller: 1.0.0 - 1.0.2

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External links
https://github.com/strongloop/strong-nginx-controller/blob/master/lib/server.js#L65,
https://snyk.io/vuln/SNYK-JS-STRONGNGINXCONTROLLER-564248

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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. However, proof of concept for this vulnerability is available.