#VU77178 NULL pointer dereference in FortiOS - CVE-2023-29180

Vulnerability identifier: #VU77178

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-29180

CWE-ID: CWE-476

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FortiOS
Operating systems & Components / Operating system

Vendor: Fortinet, Inc

Description

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

The vulnerability exists due to a NULL pointer dereference error. A remote non-authenticated attacker can send a specially crafted HTTP request to the /proxy endpoint and crash the SSL-VPN daemon.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FortiOS: 6.0.0 - 6.0.16, 6.2.0 - 6.2.14, 6.4.0 - 6.4.12, 7.0.0 - 7.0.11, 7.2.0 - 7.2.4

---

External links
https://fortiguard.fortinet.com/psirt/FG-IR-23-111

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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