A Denial of Service (DoS) vulnerability in Fortinet FortiOS 5.4.0 to 5.4.5 allows an authenticated user to cause the web GUI to be temporarily unresponsive, via passing a specially crafted payload to the ‘params’ parameter of the JSON web API.
[
{
"product": "Fortinet FortiOS",
"vendor": "Fortinet",
"versions": [
{
"status": "affected",
"version": "FortiOS 5.4.5, 5.4.4, 5.4.3, 5.4.2, 5.4.1, 5.4.0"
}
]
}
]