#VU29230 OS Command Injection in thenify - CVE-2020-7677

Vulnerability identifier: #VU29230

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-2020-7677

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: No

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

Vendor: Thenables

Description

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

The vulnerability exists due to improper input validation in the "name" argument in "eval" function. A remote unauthenticated attacker can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

thenify: 2.0.0 - 3.3.0

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External links
https://snyk.io/vuln/SNYK-JS-THENIFY-571690
https://github.com/thenables/thenify/commit/0d94a24eb933bc835d568f3009f4d269c4c4c17a
https://github.com/thenables/thenify/blob/master/index.js#L17

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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.