CVE-2023-47537: Fortilink lack of certificate validation
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.
Other sources
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.
— MITRE
Affected Software
Remediation
Information
Event History
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.