Bugtraq mailing list archives
Re: Win95/98 and Novell client DoS
From: mrichich () DREW EDU (Mike Richichi)
Date: Fri, 8 Oct 1999 20:12:32 -0400
Bruce Dennison wrote:
FYI, Perhaps this has been reported. I havent seen it. If it has been previously reported, sorry. Consider this a reminder. Novell client opens port 427 TCP. My services file reports this port to be known as 'svrloc'. You can bluescreen Win95/98 with Novell Client versions 3.0 and 3.0.1 by sending a SYN to this port, as you would with 'nmap -sS -p 427 <target>'. This is quite fatal. The only recovery seems to be a power reset. I am not the workstation, LAN or Novell person in my shop. Its not my problem to deal with even though I found it. I can not test this any further. The only way I have found to stop it is to remove the Novell Client from my machine. Can someone confirm this? Does anyone have any more or better information on this?
This does not happen in the 3.1 version of the Novell Client, and it's subsequent service packs (there are 2.) Anyone using the 3.0.x Novell clients deserves what they get :-). Seriously, this apparently has been fixed, intentionally or not, and the 3.1 client is much more stable in general than 3.0.x. The 3.1 client still opens a listener on 427, and srvloc is the Service Location Protocol that NetWare 5 uses to locate fileservers and such over IP as opposed to IPX. I'm pretty sure the listener goes away if you install the client with IPX only support. I'm however not sure how it gets used at all, since the client usually sends SLP requests from a port > 1024. --Mike -------------------- Mike Richichi Assistant Director of Academic Technology, Drew University mailto:mrichich () drew edu, http://www.users.drew.edu/~mrichich/
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- Re: Omni-NFS/X Enterprise (nfsd.exe) DOS H D Moore (Oct 06)
- Re: Omni-NFS/X Enterprise (nfsd.exe) DOS Mikael Olsson (Oct 07)
- Win95/98 and Novell client DoS Bruce Dennison (Oct 08)
- Re: Win95/98 and Novell client DoS Gyorgy Camaszotisz, Novell DevNet SysOp 13 (Oct 08)
- Re: Win95/98 and Novell client DoS Mike Richichi (Oct 08)
- Re: Win95/98 and Novell client DoS Richard Reiner (Oct 08)
- Re: MicroImages MIX X Server H D Moore (Oct 06)
- Re: MicroImages MIX X Server Rich Lafferty (Oct 08)
- Re: MicroImages MIX X Server Dan Stromberg (Oct 11)
- Re: MicroImages MIX X Server Jim Frost (Oct 05)