#VU72344 Improper Certificate Validation in FortiOS - CVE-2022-39948

Vulnerability identifier: #VU72344

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-2022-39948

CWE-ID: CWE-295

Exploitation vector: 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 when establishing secure connections with threat feed fabric connectors. A remote attacker can perform MitM attack on the communication channel between the affected device and remote servers hosting threat feeds.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FortiOS: 6.0.0 - 6.0.16, 6.2.0 - 6.2.12, 6.4.0 - 6.4.11, 7.0.0 - 7.0.7, 7.2.0 - 7.2.3

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External links
https://fortiguard.com/psirt/FG-IR-22-257

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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.