#VU100781 Improper certificate validation in FortiPortal - CVE-2024-40590

Vulnerability identifier: #VU100781

Vulnerability risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-40590

CWE-ID: CWE-295

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FortiPortal
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: Fortinet, Inc

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to improper certificate validation when connecting to a FortiManager device, a FortiAnalyzer device, or an SMTP server. A remote attacker can intercept or tamper with the encrypted communication channel established between the FortiPortal and those endpoints.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FortiPortal: 6.0.0 - 7.4.0

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External links
https://www.fortiguard.com/psirt/FG-IR-22-155

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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.