Open redirect in FortiAuthenticator

1) Open redirect

EUVDB-ID: #VU89566

Risk: Low

CVSSv3.1: 3 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-23664

CWE-ID: CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

Exploit availability: No

Description

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper sanitization of user-supplied data on /portal/ disclaimer. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.

Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FortiAuthenticator: 6.4.0 - 6.6.0

CPE2.3

• cpe:2.3:a:fortinet:fortiauthenticator:6.6.0:*:*:*:*:*:*:*
• cpe:2.3:a:fortinet:fortiauthenticator:6.5.3:*:*:*:*:*:*:*
• cpe:2.3:a:fortinet:fortiauthenticator:6.5.2:*:*:*:*:*:*:*

External links

http://www.fortiguard.com/psirt/FG-IR-23-465

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.