diff -uarN dropbear-0.50.orig/options.h dropbear-0.50/options.h
--- dropbear-0.50.orig/options.h        2007-08-08 17:39:37.000000000 +0200
+++ dropbear-0.50/options.h     2008-02-01 00:22:07.000000000 +0100
@@ -148,6 +148,9 @@
 * SSH_ASKPASS instead. Comment out this var to remove this functionality.*/
#define DROPBEAR_PASSWORD_ENV "DROPBEAR_PASSWORD"

+/* disable server empty password check because root has no password on EZX */
+#define DISABLE_SVR_EMPTY_PASSWD_CHECK
+
/* Define this (as well as ENABLE_CLI_PASSWORD_AUTH) to allow the use of
 * a helper program for the ssh client. The helper program should be
 * specified in the SSH_ASKPASS environment variable, and dbclient
diff -uarN dropbear-0.50.orig/svr-auth.c dropbear-0.50/svr-auth.c
--- dropbear-0.50.orig/svr-auth.c       2007-08-08 17:39:37.000000000 +0200
+++ dropbear-0.50/svr-auth.c    2008-02-01 00:22:07.000000000 +0100
@@ -236,6 +236,7 @@
               return DROPBEAR_FAILURE;
       }

+#ifndef DISABLE_SVR_EMPTY_PASSWD_CHECK
       /* check for an empty password */
       if (ses.authstate.pw->pw_passwd[0] == '\0') {
               TRACE(("leave checkusername: empty pword"))
@@ -244,6 +245,7 @@
               send_msg_userauth_failure(0, 1);
               return DROPBEAR_FAILURE;
       }
+#endif

       TRACE(("shell is %s", ses.authstate.pw->pw_shell))

diff -uarN dropbear-0.50.orig/svr-authpasswd.c dropbear-0.50/svr-authpasswd.c
--- dropbear-0.50.orig/svr-authpasswd.c 2007-08-08 17:39:37.000000000 +0200
+++ dropbear-0.50/svr-authpasswd.c      2008-02-01 00:23:00.000000000 +0100
@@ -60,6 +60,7 @@
       passwdcrypt = DEBUG_HACKCRYPT;
#endif

+#ifndef DISABLE_SVR_EMPTY_PASSWD_CHECK
       /* check for empty password - need to do this again here
        * since the shadow password may differ to that tested
        * in auth.c */
@@ -69,6 +70,7 @@
               send_msg_userauth_failure(0, 1);
               return;
       }
+#endif

       /* check if client wants to change password */
       changepw = buf_getbool(ses.payload);