su core dumped with signal 3. BSD/OS 3.0, 3.1

From: Ivan Aleksandrov <mail(at)rayd.info>
Date: Tue Mar 11 2003 - 12:30:03 EST

('binary' encoding is not supported, stored as-is)

rayd@mtelecom:~$ id
uid=127(rayd) gid=0(wheel) groups=0(wheel) rayd@mtelecom:~$ su <------------- (I send "control symbol") Password:Quit (core dumped)
rayd@mtelecom:~$

rayd@mtelecom:~$ uname -srm
BSD/OS 3.1 i386
rayd@mtelecom:~$ ls -la `whereis su`
-r-sr-xr-x 1 root bin 2868 Jan 21 1997 /usr/bin/su*
rayd@mtelecom:~$ ls -la su.core
-rw------- 1 root wheel 184320 Mar 11 22:17 su.core

root@mtelecom:/usr/home/rayd# gdb --core=su.core GDB 4.16 (i386-unknown-bsdi3.0), Copyright 1996 Free Software Foundation, Inc.
Core was generated by `su'.
Program terminated with signal 3, Quit.
#0 0xa004cbde in ?? ()

It is a serious bug?
Possible to write exploit? or with signal 3 it's impossible?

WTF?
--

RAYD <mail@rayd.info>
RAYD-RIPN, rayd@efnet Received on Tue Mar 11 16:20:15 2003