Date: Wed, 18 Mar 1998 16:03:27 -0600 (CST) From: toasty@dragondata.com To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: kern/6059: Packets from 1.1.1.1 can crash 2.2 server Message-ID: <199803182203.QAA27635@home.dragondata.com>
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>Number: 6059 >Category: kern >Synopsis: Packets from 1.1.1.1 can crash 2.2 server >Confidential: yes >Severity: serious >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Mar 18 14:10:02 PST 1998 >Last-Modified: >Originator: Kevin Day >Organization: DragonData >Release: FreeBSD 2.2.5-STABLE i386 >Environment: 2.2 server >Description: NOTE: This hasn't been well tested, if this is the result of operator error, I apologize, but I can't afford to keep crashing my server to test it. :) Flood a server with packets from a 1.1.1.1. Mar 18 02:02:17 toast /kernel.GENERIC: arpresolve: can't allocate llinfo for 1.1.1.1 Mar 18 02:02:38 toast last message repeated 6 times Mar 18 02:03:31 toast last message repeated 3 times Mar 18 02:10:02 toast last message repeated 10 times Mar 18 02:23:02 toast last message repeated 20 times Mar 18 02:34:55 toast last message repeated 15 times Mar 18 02:42:32 toast last message repeated 15 times Mar 18 02:49:02 toast last message repeated 10 times Mar 18 03:00:32 toast last message repeated 10 times Mar 18 03:13:32 toast last message repeated 20 times After an hour or so of doing this, the server suggests more swap space, then locks up. >How-To-Repeat: Spoof 1.1.1.1, and open lots of tcp connections. >Fix: No idea. :) >Audit-Trail: >Unformatted: Kevin Day To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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