medium
4.8
CWE
295
Advisory Published
CVE Published
Updated

CVE-2023-47537: Fortilink lack of certificate validation

First published: Thu Feb 08 2024(Updated: )

An improper certificate validation vulnerability [CWE-295] in FortiOS may allow an unauthenticated attacker in a Man-in-the-Middle position to decipher and alter the FortiLink communication channel between the FortiOS device and a FortiSwitch instance.

Credit: psirt@fortinet.com

Affected SoftwareAffected VersionHow to fix
Fortinet FortiOS
FortiOS>=7.4.0<=7.4.1
FortiOS>=7.2.0<=7.2.6
FortiOS>=7.0.0<=7.0.15
FortiOS>=6.4
FortiOS>=7.0.0<7.0.14
FortiOS>=7.2.0<=7.2.6
FortiOS=7.4.0
FortiOS=7.4.1

Remedy

Please upgrade to FortiOS version 7.4.2 or above Please upgrade to FortiOS version 7.2.7 or above Please upgrade to FortiOS version 7.0.16 or above

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Reference Links

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of CVE-2023-47537?

    CVE-2023-47537 is classified as a high-severity vulnerability due to its potential to allow Man-in-the-Middle attacks.

  • How do I fix CVE-2023-47537?

    To remediate CVE-2023-47537, upgrade FortiOS to version 7.4.2 or later, 7.2.7 or later, or 7.0.15 or later.

  • What type of attacks can exploit CVE-2023-47537?

    CVE-2023-47537 can be exploited by unauthenticated attackers to intercept and manipulate FortiLink communication.

  • Which versions of FortiOS are affected by CVE-2023-47537?

    CVE-2023-47537 affects FortiOS versions prior to 7.4.2, 7.2.7, and certain versions of 7.0.

  • What is the impact of CVE-2023-47537 on FortiOS?

    The impact of CVE-2023-47537 includes the ability to decipher and alter communication between FortiOS devices and FortiSwitch instances.

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