#VU78114 Insufficient Session Expiration in FortiOS - CVE-2023-28001

Vulnerability identifier: #VU78114

Vulnerability risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-28001

CWE-ID: CWE-613

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FortiOS
Operating systems & Components / Operating system

Vendor: Fortinet, Inc

Description

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to insufficient session expiration issue in FortiOS REST API, which results in a persistent websocket connection after deleting the API admin. A remote attacker can reuse the session of a deleted user and gain unauthorized access to the system.

Successful exploitation of the vulnerability requires knowledge of an API token.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FortiOS: 7.0.0 - 7.0.12, 7.2.0 - 7.2.4

---

External links
https://fortiguard.com/psirt/FG-IR-23-028

---

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.