Date: Sun, 30 Sep 2001 22:43:24 +0000 (GMT) From: Jason <jason@jason-n3xt.org> To: freebsd-questions@FreeBSD.ORG Cc: "questions@freebsd.org" <questions@FreeBSD.ORG> Subject: Re: I was rooted using telnet Message-ID: <Pine.BSF.4.21.0109302239160.10365-100000@jason-n3xt.org> In-Reply-To: <20010930101201.C98775@acadia.ne.mediaone.net>
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Yes I did see it on my daily reports AFTER it happened. They only had approx 4-5 hours on my box. Between the time I went to bed and woke up. When I get up and get to my box the frist thing I do is check to see who is on. I saw to unauthoried users (1 and 11). One of them was running a BNC for irc and the other was just idle. There were 2 other users created as well (tmp and asaf). I immediatly killall'ed them, turned off telnet in inetd.conf and added the telnet port to my firewall. I have since examined the contents of their home dirs they created. The did in fact use a buffer overflow exploit. A couple of people have requested it.. once I have time (I have a lot going on at work) I'll send the code and compiled script to the reputable requesters. ---- Jason jason@jason-n3xt.org On Sun, 30 Sep 2001, Louis LeBlanc wrote: > On 09/30/01 01:35 PM, Jason sat at the `puter and typed: > > I personally only use ssh when I am remote. I don't think that is the > > problem. No one else has privileges on my box and I don't su remotely > > unless it's something that can't possibly wait until I get home. > > How about the password? Is it a 'strong' one? How easy would it have > been to find thru brute force? > > I imagine you haven't seen anything on your daily security output, or > you would have mentioned that. > > Lou > > --- > > Jason > > jason@jason-n3xt.org > > > > On Sun, 30 Sep 2001, Doug Reynolds wrote: > > > > > On Sun, 30 Sep 2001 00:38:38 +0000 (GMT), Jason wrote: > > > > > > >I do recall the security notice. I read it on the website and from the > > > >security list. I was already planning a cvsup at the time and I asked a > > > >couple of BSD gurus I know if that when I update my sources by cvsup, > > > >would that take care of the problem. They told me it would. So a couple > > > >of days after I saw the security advisory I cvsuped from > > > >cvsup2.FreeBSD.org (i usually only use 2 or 3) and thought the problem was > > > >taken care of. I don't recall seeing any other advisories. > > > > > > the only thing i can think of is if they hacked u, they probably > > > grabbed your root password and logged on with it. _always_ ssh when > > > you su > > > > > > > > > > > > > > > >> Were you running a ver of FreeBSD prior to July 23, 2001? Versions prior > > > >> to July 23 had a remotely rootable telnetd as per > > > >> ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:49.telnetd.v1.1.asc > > > >> > > > >> On Sat, 29 Sep 2001, Jason wrote: > > > >> > > > >> > Hello: > > > >> > > > > >> > A couple of days ago I was rooted by someone using a telnet exploit. I > > > >> > have been cvsup'ing my sources regularly and was using 4.4-RC at the > > > >> > time. I've since moved to 4.4-STABLE. It looks like they used some kind > > > >> > of script. I still have it if anyone wants it. Since then I have turned > > > >> > off telnet in inetd and blocked the port with a firewall. > > > >> > > > > >> > Anyone have any ideas on how a person could do this? I looks like this > > > >> > script just tries to move a lot of data for a long period of time. > > > >> > > > > >> > --- > > > >> > Jason > > > >> > jason@jason-n3xt.org > > > >> > > > > >> > > > > >> > To Unsubscribe: send mail to majordomo@FreeBSD.org > > > >> > with "unsubscribe freebsd-questions" in the body of the message > > > >> > > > > >> > > > > >> > > > > >> > > > >> > > > > > > > > > > > >To Unsubscribe: send mail to majordomo@FreeBSD.org > > > >with "unsubscribe freebsd-questions" in the body of the message > > > > > > > > > > --- > > > doug reynolds | the maverick | mav@wastegate.net > > > > > > > > > > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-questions" in the body of the message > > > > -- > Louis LeBlanc leblanc@acadia.ne.mediaone.net > Fully Funded Hobbyist, KeySlapper Extrordinaire :) > http://acadia.ne.mediaone.net ԿԬ > > Computer, n.: > An electronic entity which performs sequences of useful steps in a > totally understandable, rigorously logical manner. If you believe > this, see me about a bridge I have for sale in Manhattan. > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the messagehelp
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