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COMMAND Watchguard Firebox dynamic VPN configuration protocol DoS SYSTEMS AFFECTED Watchguard Firebox firmware v5.x.x PROBLEM In Andreas Sandor [asandor@kpmg.dk] and Peter Gründl [pgrundl@kpmg.dk] of KPMG Danemark advisory [BUG-ID: 2002030] : The DVCP service can be crashed using anywhere between 1 and 400 packets of tab characters, followed by a CRLF. The firewall needs to be rebooted for the DVCP service to function again. SOLUTION Update to Watchguard Firebox firmware v6.0.b1140 or higher