#VU50793 OS Command Injection in Endian Firewall - CVE-2021-27201

Vulnerability identifier: #VU50793

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-2021-27201

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Endian Firewall
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor: Endian

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 a backup comment. A remote authenticated 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
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Endian Firewall: 3.3.2

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External links
https://github.com/MucahitSaratar/endian_firewall_authenticated_rce
https://sourceforge.net/projects/efw/files/Development/EFW-3.3.2/

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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.