Bugtraq mailing list archives
Re: DOS attack against HP JetDirect Printers (fwd)
From: gwen () REPTILES ORG (Gwendolynn ferch Elydyr)
Date: Thu, 20 Apr 2000 22:17:15 -0400
On Thu, 20 Apr 2000, Alfred Huger wrote:
In case anyone is interested, scanning HP printers with tools such as nmap will cause the printer to lock up hard. I discovered this while trying to diagnose a connection problem we were having with a printer. I've verified this with at least the following versions of JetDirect: Firmware Rev. : A.08.06 Firmware Rev. : G.08.03 Firmware Rev. : G.07.17 Firmware Rev. : G.07.03 I haven't been able to establish the exact communications causing the lockup; someone with more experience than I should check this out. Any network accessable printer can be put out of service with a simple nmap -sT -PT HP.printer.tcp.ip A power cycle is required for reset.
This sounds like it might be related to an older bug in the JetDirect cards - about 3 years ago, simultanious connections to a JetDirect card would cause the card to lock up, with the only recourse being a power cycle of the printer. Multiple (2+) TCP connections would trigger this, as would AppleTalk/TCP. I haven't checked it in a couple of years, but it was certainly persistant through multiple revs of the JetDirect cards. cheers! ========================================================================== "A cat spends her life conflicted between a deep, passionate and profound desire for fish and an equally deep, passionate and profound desire to avoid getting wet. This is the defining metaphor of my life right now."
Current thread:
- Re: Reappearance of an old IE security bug Elias Levy (Apr 19)
- Re: Reappearance of an old IE security bug Darren Reed (Apr 19)
- DOS attack against HP JetDirect Printers (fwd) Alfred Huger (Apr 20)
- Re: DOS attack against HP JetDirect Printers (fwd) Hobbes Gobs Llin (Apr 20)
- another WU imapd buffer overflow Michal Szymanski (Apr 20)
- Re: DOS attack against HP JetDirect Printers (fwd) Gwendolynn ferch Elydyr (Apr 20)
- Re: DOS attack against HP JetDirect Printers (fwd) Ben Woodard (Apr 21)
- local user can delete arbitrary files on SuSE-Linux Peter Münster (Apr 20)
- Re: local user can delete arbitrary files on SuSE-Linux Pavel Kankovsky (Apr 22)
- Re: DOS attack against HP JetDirect Printers (fwd) Terran Melconian (Apr 21)