From owner-freebsd-security Thu Nov 4 18:42: 0 1999 Delivered-To: freebsd-security@freebsd.org Received: from blaubaer.kn-bremen.de (blaubaer.kn-bremen.de [195.37.179.254]) by hub.freebsd.org (Postfix) with ESMTP id 4D510156BD for ; Thu, 4 Nov 1999 18:41:57 -0800 (PST) (envelope-from nox@saturn.kn-bremen.de) Received: from saturn.kn-bremen.de (uucp@localhost) by blaubaer.kn-bremen.de (8.9.1/8.9.1) with UUCP id DAA24896; Fri, 5 Nov 1999 03:38:39 +0100 Received: (from nox@localhost) by saturn.kn-bremen.de (8.9.3/8.8.5) id DAA07673; Fri, 5 Nov 1999 03:31:37 +0100 (MET) Date: Fri, 5 Nov 1999 03:31:37 +0100 (MET) From: Juergen Lock Message-Id: <199911050231.DAA07673@saturn.kn-bremen.de> To: keramida@ceid.upatras.gr Subject: Re: nmap portscan hangs X server? X-Newsgroups: local.list.freebsd.security In-Reply-To: <86eme569iu.fsf@localhost.hell.gr> References: <19991104232444.A590@saturn.kn-bremen.de> Organization: home Cc: freebsd-security@FreeBSD.ORG Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org In article <86eme569iu.fsf@localhost.hell.gr> you write: >Juergen Lock writes: > >> I just installed nmap from ports and found out when i simply do a >> >> nmap 127.0.0.1 >> >> it'll hang the X server. (XFree86, not the latest version, mind you) >> Can anyone reproduce this? Be sure you can login over the net (or a > >Yep, it did creahs my box too. Pity I can't use a network connection to >kill the offending X server. Can't find anything in the logs that says >how this happen though. Probably because I had to hit the big red >button to recover my console, after the necessary reboot + fsck. I since found this in the hung server's stdout/stderr log: _XSERVTransSocketINETGetPeerAddr: getpeername() failed: 57 _XSERVTransSocketINETAccept: ...SocketINETGetPeerAddr() failed: but why it decides to not process anything anymore from its other sockets after that i still have no idea. :( Btw is your X the latest? And if not, anyone who runs it want to give this a test? If it still happens its probably worth a bug report to the XFree86 people... Regards, -- Juergen Lock (remove dot foo from address to reply) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message