#VU61899 OS Command Injection in FortiWAN - CVE-2021-24009

Vulnerability identifier: #VU61899

Vulnerability risk: Medium

CVSSv4.0: 6.3 [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:U/U:Green]

CVE-ID: CVE-2021-24009

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FortiWAN
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Fortinet, Inc

Description

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

The vulnerability exists due to improper input validation in the FortiWAN Web GUI. A remote authenticated user can send a specially crafted HTTP request and execute arbitrary OS commands on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FortiWAN: 4.5.0 - 4.5.8

---

External links
https://fortiguard.fortinet.com/psirt/FG-IR-21-060

---

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.