Fixed bug #46341 (Added missing validation checks into define() for class

constants)

Zend/zend_builtin_functions.c

@@ -26,6 +26,7 @@
 #include "zend_ini.h"
 #include "zend_exceptions.h"
 #include "zend_extensions.h"
+#include <ctype.h>
 
 #undef ZEND_TEST_EXCEPTIONS
 
@@ -717,7 +718,7 @@ ZEND_FUNCTION(error_reporting)
    Define a new constant */
 ZEND_FUNCTION(define)
 {
-	char *name;
+	char *name, *p;
 	int name_len;
 	zval *val;
 	zval *val_free = NULL;
@@ -729,6 +730,40 @@ ZEND_FUNCTION(define)
 		return;
 	}
 
+	/* check if class constant */
+	if ((p = memchr(name, ':', name_len))) {
+		char *s = name;
+		zend_class_entry **ce;
+
+		if (*(p + 1) != ':') { /* invalid constant specifier */
+			RETURN_FALSE;
+		} else if ((p + 2) >= (name + name_len)) { /* constant name length < 1 */
+			zend_error(E_WARNING, "Constants name cannot be empty");
+			RETURN_FALSE;
+		} else if (zend_lookup_class(s, (p - s), &ce TSRMLS_CC) != SUCCESS) { /* invalid class name */
+			zend_error(E_WARNING, "Class does not exists");
+			RETURN_FALSE;
+		} else { /* check of constant name contains invalid chars */
+			int ok = 1;
+			p += 2; /* move beyond :: to 1st char of constant's name */
+
+			if (!isalpha(*p) && *p != '_') {
+				ok = 0;
+			}
+
+			while (ok && *++p) {
+				if (!isalnum(*p) && *p != '_') {
+					ok = 0;
+					break;
+				}
+			}
+
+			if (!ok) {
+				RETURN_FALSE;
+			}
+		}
+	}
+
 	if(non_cs) {
 		case_sensitive = 0;
 	}