PSIRTFortilink lack of certificate validation
Summary
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.
| Version | Affected | Solution |
|---|---|---|
| FortiOS 7.4 | 7.4.0 through 7.4.1 | Upgrade to 7.4.2 or above |
| FortiOS 7.2 | 7.2.0 through 7.2.6 | Upgrade to 7.2.7 or above |
| FortiOS 7.0 | 7.0.0 through 7.0.15 | Upgrade to upcoming 7.0.16 or above |
| FortiOS 6.4 | 6.4 all versions | Migrate to a fixed release |
Acknowledgement
Fortinet is pleased to thank Christian Hilgers from Indevis for reporting this vulnerability under responsible disclosure.Timeline
2024-02-08: Initial publication
2024-05-21: Added fix for 7.0 branch