#VU51826 Command Injection in killport - CVE-2021-23360

Vulnerability identifier: #VU51826

Vulnerability risk: Medium

CVSSv4.0: 7.4 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2021-23360

CWE-ID: CWE-77

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
killport
Web applications / Modules and components for CMS

Vendor: ssnau

Description

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

The vulnerability exists due to improper input validation in the child_process exec function. A remote authenticated attacker can pass specially crafted data to the application and execute arbitrary commands on the target system. 

Mitigation
Install updates from vendor's website.

Vulnerable software versions

killport: 1.0.0 - 1.0.1

---

External links
https://github.com/ssnau/killport/blob/5268f23ea8f152e47182b263d8f7ef20c12a9f28/index.js%23L9
https://github.com/ssnau/killport/commit/bec8e371f170a12e11cd222ffc7a6e1ae9942638
https://snyk.io/vuln/SNYK-JS-KILLPORT-1078535

---

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