CVE-2023-47537: fortios Cert Validation Flaw — Fix

Description

An improper certificate validation vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2.0 through 7.2.6, FortiOS 7.0.0 through 7.0.15, FortiOS 6.4 all versions allows a remote and unauthenticated attacker to perform a Man-in-the-Middle attack on the FortiLink communication channel between the FortiOS device and FortiSwitch.

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CVSS v3.1 Score

4.8

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Weakness Type (CWE)

CWE-295 CWE-295

Affected Products

Vendor	Product	Versions
fortinet	fortios	7.0.0 — 7.0.14
fortinet	fortios	7.2.0 — 7.2.6
fortinet	fortios	All
fortinet	fortios	All

References

Advisories & Patches

https://fortiguard.com/psirt/FG-IR-23-301 https://fortiguard.com/psirt/FG-IR-23-301

Frequently Asked Questions

What is CVE-2023-47537? +

An improper certificate validation vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2.0 through 7.2.6, FortiOS 7.0.0 through 7.0.15, FortiOS 6.4 all versions allows a remote and unauthenticated attacker to perform a Man-in-the-Middle attack on the FortiLink communication channel between the FortiOS device and FortiSwitch. It has a CVSS v3.1 base score of 4.8 (MEDIUM).

How severe is CVE-2023-47537? +

CVE-2023-47537 has a CVSS v3.1 score of 4.8 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-47537? +

CVE-2023-47537 affects products from fortinet, specifically: fortios. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-47537? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2023-47537