Provide references for CVE-2021-4433.
Where can I find more information about CVE-2021-4433?
References are available at: https://vuldb.com/?id.250836, https://vuldb.com/?ctiid.250836, https://packetstormsecurity.com/files/163138/Sami-HTTP-Server-2.0-Denial-Of-Service.html.