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TUCoPS :: Network Appliances :: bt755.txt

NetScreen ScreenOS 4.0.3r2 DOS

There is a vulnerability in NetScreen's latest ScreenOS

that allows a malicious user to create a denial of

service attack remotely.

This has only been confirmed with the following

operating systems and NetScreen hardware.

Microsoft Windows 2000 Professional SP1 and SP2

NetScreen 204 and 208

By modifying the TCP Window size in the registry in W2K

a user can cause a NetScreen 20x running ScreenOS

4.0.3r2 to core dump the ASIC and reboot.

This only affects devices that have management services

such as Web, Telnet, or SSH enabled on an interface.

When a user tries to connect to one of the management

ports with the registry settings below the NetScreen



New DWORD Value







Papa Love Mambo Research Group

plm at

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