#VU68905 Key management errors in FortiOS - CVE-2022-30307

Vulnerability identifier: #VU68905

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-30307

CWE-ID: CWE-320

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 key management error affecting the RSA SSH host key in FortiOS. A remote non-authenticated attacker can perform a man in the middle attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FortiOS: 6.4.9, 7.0.6, 7.2.0

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External links
https://fortiguard.fortinet.com/psirt/FG-IR-22-228

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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.