This patch will upgrade CU Sudo version 1.5.4 to version 1.5.4
patchlevel 1.  To apply, run:
    cd sudo.v1.5.4
    patch -p1 < cu-sudo.v1.5.4p1.patch

diff -uN sudo.v1.5.4/CHANGES sudo.v1.5.4p1/CHANGES
--- sudo.v1.5.4/CHANGES	Tue Jan 13 08:19:19 1998
+++ sudo.v1.5.4p1/CHANGES	Sat Jun 27 14:11:06 1998
@@ -863,3 +863,8 @@
      Noted by Alex Parchkov <alexp@ind.tansu.com.au>.
 
 Sudo 1.5.4 released.
+
+283) Sudo should prompt for a password before telling the user that
+     a command could not be found.  Noted by rhodie@NAC.NET.
+
+Sudo 1.5.4p1 released.
diff -uN sudo.v1.5.4/Makefile.in sudo.v1.5.4p1/Makefile.in
--- sudo.v1.5.4/Makefile.in	Mon Jan 12 22:05:46 1998
+++ sudo.v1.5.4p1/Makefile.in	Sat Jun 27 14:08:06 1998
@@ -112,7 +112,7 @@
 HDRS = sudo.h pathnames.h options.h compat.h version.h insults.h \
        ins_2001.h ins_classic.h ins_goons.h ins_csops.h
 
-VERSION = 1.5.4
+VERSION = 1.5.4p1
 
 DISTFILES = $(SRCS) $(HDRS) BUGS CHANGES COPYING HISTORY INSTALL OPTIONS TODO \
             PORTING README RUNSON FAQ TROUBLESHOOTING Makefile.in acsite.m4 \
Common subdirectories: sudo.v1.5.4/emul and sudo.v1.5.4p1/emul
diff -uN sudo.v1.5.4/sudo.c sudo.v1.5.4p1/sudo.c
--- sudo.v1.5.4/sudo.c	Mon Jan 12 21:48:51 1998
+++ sudo.v1.5.4p1/sudo.c	Sat Jun 27 14:07:15 1998
@@ -126,7 +126,7 @@
 static void usage			__P((int));
 static void load_globals		__P((int));
 static int check_sudoers		__P((void));
-static void load_cmnd			__P((int));
+static int load_cmnd			__P((int));
 static void add_env			__P((int));
 static void clean_env			__P((char **, struct env_table *));
 extern int  user_is_exempt		__P((void));
@@ -188,7 +188,7 @@
     int argc;
     char **argv;
 {
-    int rtn;
+    int rtn, found_cmnd;
     int sudo_mode = MODE_RUN;
     extern char ** environ;
 
@@ -302,7 +302,7 @@
 #endif /* SECURE_PATH */
 
     if ((sudo_mode & MODE_RUN)) {
-	load_cmnd(sudo_mode);	/* load the cmnd global variable */
+	found_cmnd = load_cmnd(sudo_mode); /* load the cmnd global variable */
     } else if (sudo_mode == MODE_KILL) {
 	remove_timestamp();	/* remove the timestamp ticket file */
 	exit(0);
@@ -319,6 +319,14 @@
 	case VALIDATE_OK_NOPASS:
 	    if (rtn != VALIDATE_OK_NOPASS) 
 		check_user();
+
+	    /* finally tell the user if the command did not exist */
+	    if ((sudo_mode & MODE_RUN) && !found_cmnd) {
+		(void) fprintf(stderr, "%s: %s: command not found\n", Argv[0],
+			       cmnd);
+		exit(1);
+	    }
+
 	    log_error(ALL_SYSTEMS_GO);
 	    if (sudo_mode == MODE_VALIDATE)
 		exit(0);
@@ -748,9 +756,10 @@
  *  load_cmnd()
  *
  *  This function sets the cmnd global variable
+ *  Returns 1 on success, 0 on failure.
  */
 
-static void load_cmnd(sudo_mode)
+static int load_cmnd(sudo_mode)
     int sudo_mode;
 {
     if (strlen(NewArgv[0]) > MAXPATHLEN) {
@@ -764,10 +773,10 @@
      * Resolve the path
      */
     if ((cmnd = find_path(NewArgv[0])) == NULL) {
-	(void) fprintf(stderr, "%s: %s: command not found\n", Argv[0],
-		       NewArgv[0]);
-	exit(1);
-    }
+	cmnd = NewArgv[0];
+	return(0);
+    } else
+	return(1);
 }
 
 
diff -uN sudo.v1.5.4/version.h sudo.v1.5.4p1/version.h
--- sudo.v1.5.4/version.h	Mon Jan 12 21:48:57 1998
+++ sudo.v1.5.4p1/version.h	Sat Jun 27 14:07:48 1998
@@ -23,6 +23,6 @@
 #ifndef _SUDO_VERSION_H
 #define _SUDO_VERSION_H
 
-static char version[] = "1.5.4";
+static char version[] = "1.5.4p1";
 
 #endif /* _SUDO_VERSION_H */