#VU89599 Insufficient verification of data authenticity in FortiOS and FortiProxy - CVE-2023-45586

Vulnerability identifier: #VU89599

Vulnerability risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-45586

CWE-ID: CWE-345

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FortiOS
Operating systems & Components / Operating system
FortiProxy
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Fortinet, Inc

Description

The vulnerability allows a remote user to perform spoofing attack.

The vulnerability exists due to insufficient verification of data authenticity in the SSL-VPN tunnel mode. A remote authenticated user can send specially crafted packets with a spoofed IP address.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FortiOS: 6.2.0 - 6.2.16, 6.4.0 - 6.4.15, 7.0.0 - 7.0.12, 7.2.0 - 7.2.7, 7.4.0 - 7.4.1

FortiProxy: 2.0.0 - 2.0.14, 7.0.0 - 7.0.13, 7.2.0 - 7.2.7, 7.4.0 - 7.4.1

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External links
https://fortiguard.com/psirt/FG-IR-23-225

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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