FortiOS 5.2.3, when configured to use High Availability (HA) and the dedicated management interface is enabled, does not require authentica…

FortiOS 5.2.3, when configured to use High Availability (HA) and the dedicated management interface is enabled, does not require authentication for access to the ZebOS shell on the HA dedicated management interface, which allows remote attackers to obtain shell access via unspecified vectors.