Security Incidents mailing list archives

Re: possible DNS problem ??


From: Ryan Hilton <ravergeek () AUDIOPIMPS COM>
Date: Thu, 1 Feb 2001 22:34:45 -0800

I'm unsure of how you relate the 'clear' program to a DNS bug.  The clear
program "clears" the terminal.  Perhaps the problem resides elsewhere?  Note
that the core was dropped due to a Signal 11.  Try upgrading (or compiling
from source) the clear program and see if it keeps happening.

If you get Signal 11's often you may want to check your hardware for problems.

From the man page:
-- Snip --
clear(1)                                                 clear(1)

NAME
       clear - clear the terminal screen
-- Snip --

On Thursday 01 February 2001 05:41, you wrote:
My dns box is a redhat 6.0 with kernel 2.2.5-15,
 i run bind-8.2.2-p5,chrooted,and a few days ago i found the next problem.

[machine:/]# clear
Segmentation fault (core dumped)
[machine:/]# gdb -c core
GNU gdb 4.17.0.11 with Linux support
Copyright 1998 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
are welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-redhat-linux".
Core was generated by `clear'.
Program terminated with signal 11, Segmentation fault.
#0  0x8048524 in ?? ()
(gdb) info registers
     eax:      0x101         257
     ecx: 0x40053ce4  1074085092
     edx:  0x8049690   134518416
     ebx: 0x4013e1b4  1075044788
     esp: 0xbffffd18 -1073742568
     ebp: 0xbffffd28 -1073742552
     esi: 0xbffffd74 -1073742476
     edi:        0x1           1
     eip:  0x8048524   134513956
  eflags:    0x10246 IOPL: 0; flags: PF ZF IF RF
orig_eax: 0xffffffff          -1
      cs:       0x23          35
      ss:       0x2b          43
      ds:       0x2b          43
      es:       0x2b          43
      fs:       0x2b          43
      gs:       0x2b          43
(gdb)

does someone has any idea ?

thanks in advance.

Jonas.

--
==============================================
Ryan Hilton                                         Uber-Geeks.net
ravergeek () audiopimps com    http://www.uber-geeks.net
                 "No answer is also an answer"
==============================================


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