Serv-U 'SITE SET TRANSFERPROGRESS ON' Command Remote Denial of Service Vulnerability

Summary
Serv-U is prone to a remote denial-of-service vulnerability. Successfully exploiting this issue will allow attackers to deny service to legitimate users. Serv-U 7.0.0.1 through 8.2.0.3 are vulnerable other versions may also be affected.
Solution
The vendor has released an update. Please see the references for details.
References