#VU84858 OS Command Injection in FortiTester - CVE-2023-40716

Vulnerability identifier: #VU84858

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-40716

CWE-ID: CWE-78

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
FortiTester
Server applications / Other server solutions

Vendor: Fortinet, Inc

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to improper input validation in "execute restore/backup" CLI commands. A local user can pass specially crafted arguments to the affected CLI commands and execute arbitrary OS commands on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FortiTester: 2.3.0, 2.4.0 - 2.4.1, 2.5.0, 2.6.0, 2.7.0, 2.8.0, 2.9.0, 3.0.0, 3.1.0, 3.2.0, 3.3.0 - 3.3.1, 3.4.0, 3.5.0 - 3.5.1, 3.6.0, 3.7.0 - 3.7.1, 3.8.0, 3.9.0 - 3.9.2, 4.0.0, 4.1.0 - 4.1.1, 4.2.0 - 4.2.1, 7.0.0, 7.1.0 - 7.1.1, 7.2.0 - 7.2.3

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External links
https://fortiguard.com/psirt/FG-IR-22-345

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.