Vulnerability identifier: #VU62771

Vulnerability risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-22306

CWE-ID: CWE-295

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
FortiOS
Operating systems & Components / Operating system

Vendor: Fortinet, Inc

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to improper certificate validation. A remote attacker on the local network can perform man-in-the-middle attack against communication between the FortiGate and some peers such as private SDNs and external cloud platforms.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FortiOS: 7.0.0, 6.0.0 - 6.0.14, 6.4.0 - 6.4.8, 6.2.0 - 6.2.10

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External links
http://fortiguard.fortinet.com/psirt/FG-IR-21-239

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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 local network (LAN).

Is there known malware, which exploits this vulnerability?

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