Date: Fri, 21 Nov 1997 15:42:43 -0800 From: Brent Ngo <brent.ngo@freegate.com> To: freebsd-questions@FreeBSD.ORG Subject: "LAND" bug Message-ID: <34761C73.24D@freegate.com>
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I would like to know asap if FreeBSD 2.2.2 is vulnerable to the following internet bug: >A new denial-of-service attack, known as the 'LAND' bug, is available on >the Internet. It is a short program, that sends exactly one packet (though >many could be sent if desired) to a host. This packet will cause >the host system, if the system has not been fixed, to: > >1) slow down dramatically for a period of time >2) slow down dramatically until rebooted >3) halt processing altogether >or >4) crash and reboot the system > >This packet, while containing nothing special, causes the TCP/IP process >in the system to become confused. The length of the packet is less >than 60 bytes. > >It is recommended that you contact your vendor, and upgrade your system >immediately. Attached is a list of systems. It may not be complete, >nor accurate - please see your vendor for more information.
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