Date: Mon, 21 Dec 1998 11:23:57 -0800 From: Entropy Reply-To: Bugtraq List To: BUGTRAQ@netspace.org Subject: Fwd: Re: 3com The software that 3com has developed for running the NMC (network management card) for the Total Control Hubs is a bit shady. After uploading the software ( as one must do) YOU will notice a login account called "adm" with no password. Naturally no one wants the "adm" login there, so they delete it from the configuration, and go on programming the box. Once the box has been programmed and is ready to take calls, it is necessary to save all settings, and hardware reset the box, at this point the box is fully configured, and ready to take calls. The problem is this, the "adm" login requiring no password, is still there after the hardware reset!!! It cannot be deleted! I have ran a trace route on over 37 ISP's, found there HD box's, and have been able to get into 21 of them through this security hole! The admin that programmed the box has no reason to go back into the configuration after doing the hardware reset, he has already gone over and double checked his settings, they all looked good, and hardware reset has gone into action as the last step.., he has no clue that the "adm" he has deleted is still there, and active. In order to stop the "adm" login one can only dis-able the "adm" login, not delete it....this is the only way to stop the login. I have tested this on the current, and last 3 releases of software put out by 3com for the NMC card. 3Com has been notified I hope this helps. Entr0py ---------------------------------------------------------------------------- Date: Mon, 21 Dec 1998 23:06:43 -0700 From: Eric Wanner Reply-To: Bugtraq List To: BUGTRAQ@netspace.org Subject: Re: Fwd: Re: 3com NMC card? The only card you can telnet to is the NAC (Network Access Card, I believe). The bug appears to be present on this card. -- Eric Wanner Head Systems Administrator FutureOne, Inc. 602-385-3379 http://home.futureone.com EfNet: holobyte ---------------------------------------------------------------------------- Date: Mon, 21 Dec 1998 22:15:19 -0800 From: Eric Forcey Reply-To: Bugtraq List To: BUGTRAQ@netspace.org Subject: Re: 3com Actually it's not the NMC card, its the HiPer ARC card. According to USR/3com personnel it is only affected in v4.1.x revisions of the HARC code. As posted, the fix is to disable the account.