FW: mysql: Trivial mSQL/MySQL DoS method? (fwd)

[monty () MONTY PP SCI FI (Michael Widenius)]

Hi all,

        Just FYI, here is what was posted to the MySQL list from the MySQL
author regarding the DoS attack.

Scott


-----FW: <199803262141.XAA10491 () monty pp sci fi>-----

Date: Thu, 26 Mar 1998 23:41:43 +0200
Sender: owner-mysql () analytikerna se
From: Michael Widenius <monty () monty pp sci fi>
To: "Joel B. Stalder" <joel () uptimecomputers com>
Subject: mysql: Trivial mSQL/MySQL DoS method? (fwd)
Cc: mysql () tcx se


This never was fatal (only VERY annoying) for MySQL 3.20 !  MySQL has
a timeout of 30 seconds for each read from the client. This means
that the 'hang' only lasts 30 seconds for MySQL.
MySQL 3.21.26 and below has the same problem.

> From the changelog of 3.21.27 (I am compiling a distribution just now):

* Changed connect timeout to 3 seconds to make it somewhat harder
  for crackers to kill mysqld trough telnet + TCP/IP.

Yours,
Monty

< original fwd by Joel B. Stalder removed >