Vulnerability Development mailing list archives
Re: SV: Modern hw-killing virus feasible
From: Lynn Crumbling <lynn () X HJSOFT COM>
Date: Thu, 8 Mar 2001 20:12:30 -0500
While I'm sure it's not permanently damaging, it's entirely possible to alter something, that a reboot can not fix: S registers. Yes, some apps do fully initialize the modem, setting S register values at program-load. But most of those only set dialing speed or x3/x4 (detect dial tone). To top things off, you don't need to be Administrator to write modem configurations to NVRAM and many modems I've seen have it (obviously those that don't, aren't at risk). Alas, I don't have an S register list handy, so there may not even be any that render the modem unusable. But if I remember correctly, you can do many things with them, including set CCITT or Bell, adjust dialing speed... for times = 1 to 20 $i = random number 0 to 15 $j = random number 0 to 255 ats[$i] = $j next write current config as default [at&W1?] atz [just for kicks] ....would wreak complete havok on the values... -- - Lynn Lynn Crumbling, Sr. System Analyst Analytical Design Solutions, Inc.
Current thread:
- Re: Modern hw-killing virus feasible, (continued)
- Re: Modern hw-killing virus feasible fejed (Mar 08)
- Re: Modern hw-killing virus feasible christian void (Mar 07)
- Re: Modern hw-killing virus feasible Jon O. (Mar 07)
- Re: Modern hw-killing virus feasible Ma Gores (Mar 06)
- Re: Modern hw-killing virus feasible Nick (Mar 07)
- Re: Modern hw-killing virus feasible Ben Ford (Mar 07)
- Re: Modern hw-killing virus feasible Titanas (Mar 08)
- Re: Modern hw-killing virus feasible Lucien Fransman (Mar 08)
- Re: Modern hw-killing virus feasible Ian Kayne (Mar 07)
- SV: Modern hw-killing virus feasible Christian Wettergren (privat) (Mar 08)
- Re: SV: Modern hw-killing virus feasible Lynn Crumbling (Mar 09)
- Re: SV: Modern hw-killing virus feasible Bruno Lustosa (Mar 09)
- SV: Modern hw-killing virus feasible Christian Wettergren (privat) (Mar 08)
- Re: Modern hw-killing virus feasible Ashworth, Robert C. [Contractor] (Mar 07)
- Re: Modern hw-killing virus feasible Michael Wojcik (Mar 07)
- Re: Modern hw-killing virus feasible Robert Sandilands (Mar 07)
- Re: Modern hw-killing virus feasible Peter Tonoli (Mar 08)
- Re: Modern hw-killing virus feasible Syzop (Mar 08)
- Re: Modern hw-killing virus feasible Ian Kayne (Mar 08)
- Re: Modern hw-killing virus feasible Matt Bell (Mar 08)
- FW: Modern hw-killing virus feasible Russell Munday (Mar 08)
- Re: Modern hw-killing virus feasible Jason Brvenik (Mar 08)