#VU81223 OS Command Injection in FortiTester - CVE-2023-36642

Vulnerability identifier: #VU81223

Vulnerability risk: Low

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-36642

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FortiTester
Server applications / Other server solutions

Vendor: Fortinet, Inc

Description

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

The vulnerability exists due to improper input validation in FortiGuard explicit proxy setting within the management interface of FortiTester. A remote privileged user can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FortiTester: 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-22-501

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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