Improper input validation in FortiAP-U

1) Input validation error

EUVDB-ID: #VU80898

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-36634

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to list and delete arbitrary files on the system.

The vulnerability exists due to insufficient validation of user-supplied input in CLI. A local user can pass specially crafted arguments to an affected command and list files or delete them.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FortiAP-U: 5.4.0 - 7.0.0

CPE2.3

• cpe:2.3:h:fortinet:fortiap-u:5.4.6:*:*:*:*:*:*:*
• cpe:2.3:h:fortinet:fortiap-u:6.0.4:*:*:*:*:*:*:*
• cpe:2.3:h:fortinet:fortiap-u:6.2.5:*:*:*:*:*:*:*
• cpe:2.3:h:fortinet:fortiap-u:7.0.0:*:*:*:*:*:*:*

External links

https://fortiguard.com/psirt/FG-IR-23-123

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.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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