Lack of certificate verification when establishing secure connections with threat feed fabric connectors

Summary

An improper certificate validation vulnerability [CWE-295] in FortiOS and FortiProxy may allow a remote and unauthenticated attacker to perform a Man-in-the-Middle attack on the communication channel between the FortiOS/FortiProxy device and remote servers hosting threat feeds (when the latter are configured as Fabric connectors in FortiOS/FortiProxy)

Version Affected Solution
FortiOS 7.2 7.2.0 through 7.2.3 Upgrade to 7.2.4 or above
FortiOS 7.0 7.0.0 through 7.0.7 Upgrade to 7.0.8 or above
FortiOS 6.4 6.4 all versions Migrate to a fixed release
FortiOS 6.2 6.2 all versions Migrate to a fixed release
FortiOS 6.0 6.0 all versions Migrate to a fixed release
FortiProxy 7.2 Not affected Not Applicable
FortiProxy 7.0 7.0.0 through 7.0.6 Upgrade to 7.0.7 or above
FortiProxy 2.0 2.0 all versions Migrate to a fixed release
FortiProxy 1.2 1.2 all versions Migrate to a fixed release
FortiProxy 1.1 Not affected Not Applicable
Follow the recommended upgrade path using our tool at: https://docs.fortinet.com/upgrade-tool

Timeline

2023-02-16: Initial publication