Privilege escalation in FortiTester

1) OS Command Injection

EUVDB-ID: #VU84858

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 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

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 - 7.2.3

CPE2.3

• cpe:2.3:a:fortinet:fortitester:2.3.0:*:*:*:*:*:*:*
• cpe:2.3:a:fortinet:fortitester:2.4.1:*:*:*:*:*:*:*
• cpe:2.3:a:fortinet:fortitester:2.5.0:*:*:*:*:*:*:*
• cpe:2.3:a:fortinet:fortitester:2.6.0:*:*:*:*:*:*:*
• cpe:2.3:a:fortinet:fortitester:2.7.0:*:*:*:*:*:*:*
• cpe:2.3:a:fortinet:fortitester:2.8.0:*:*:*:*:*:*:*
• cpe:2.3:a:fortinet:fortitester:2.9.0:*:*:*:*:*:*:*
• cpe:2.3:a:fortinet:fortitester:3.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:fortinet:fortitester:3.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:fortinet:fortitester:3.2.0:*:*:*:*:*:*:*

External links

http://fortiguard.com/psirt/FG-IR-22-345

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.