Null pointer dereference in FortiOS

1) Null pointer dereference

EUVDB-ID: #VU107346

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-36504

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: Yes

Description

The vulnerability allows a remote authenticated user to perform a denial of service (DoS) attack.

The vulnerability exists due tonull pointer dereference. An authenticated attacker can perform a denial of service on the SSLVPN web portal via a specially crafted URL. This does not impact the SSL VPN tunnel mode.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FortiOS: 6.4.0 - 7.6.2

CPE2.3

• cpe:2.3:o:fortinet:fortios:6.4.16:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:7.0.17:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:7.2.11:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:7.4.7:*:*:*:*:*:*:*
• cpe:2.3:o:fortinet:fortios:7.6.2:*:*:*:*:*:*:*

External links

https://www.fortiguard.com/psirt/FG-IR-23-473

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.