Insufficient session expiration in FortiOS API

1) Insufficient Session Expiration

EUVDB-ID: #VU78114

Risk: Low

CVSSv3.1: 3.6 [CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-28001

CWE-ID: CWE-613 - Insufficient Session Expiration

Exploit availability: No

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 - 7.2.4

External links

http://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.