Fixed bug #62082

This was a buffer overflow in internal function
get_icu_disp_value_src_php().

Author: cataphract

ext/intl/locale/locale_methods.c

@@ -527,7 +527,7 @@ static void get_icu_disp_value_src_php( char* tag_name, INTERNAL_FUNCTION_PARAME
 
     /* Get the disp_value for the given locale */
     do{
-        disp_name = erealloc( disp_name , buflen  );
+        disp_name = erealloc( disp_name , buflen * sizeof(UChar)  );
         disp_name_len = buflen;
 
 		if( strcmp(tag_name , LOC_LANG_TAG)==0 ){
@@ -542,6 +542,7 @@ static void get_icu_disp_value_src_php( char* tag_name, INTERNAL_FUNCTION_PARAME
 			buflen = uloc_getDisplayName ( mod_loc_name , disp_loc_name , disp_name , disp_name_len , &status);
 		}
 
+		/* U_STRING_NOT_TERMINATED_WARNING is admissible here; don't look for it */
 		if( U_FAILURE( status ) )
 		{
 			if( status == U_BUFFER_OVERFLOW_ERROR )
@@ -1562,11 +1563,11 @@ PHP_FUNCTION(locale_lookup)
 /* }}} */
 
 /* {{{ proto string Locale::acceptFromHttp(string $http_accept)
-* Tries to find out best available locale based on HTTP “Accept-Language” header
+* Tries to find out best available locale based on HTTP �Accept-Language� header
 */
 /* }}} */
 /* {{{ proto string locale_accept_from_http(string $http_accept)
-* Tries to find out best available locale based on HTTP “Accept-Language” header
+* Tries to find out best available locale based on HTTP �Accept-Language� header
 */
 PHP_FUNCTION(locale_accept_from_http)
 {

ext/intl/tests/bug62082.phpt

@@ -0,0 +1,15 @@
+--TEST--
+Bug #62082: Memory corruption in internal get_icu_disp_value_src_php()
+--SKIPIF--
+<?php
+if (!extension_loaded('intl'))
+	die('skip intl extension not enabled');
+--FILE--
+<?php
+var_dump(locale_get_display_name(str_repeat("a", 300), null));
+var_dump(locale_get_display_name(str_repeat("a", 512), null));
+var_dump(locale_get_display_name(str_repeat("a", 600), null));
+--EXPECT--
+string(300) "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+string(512) "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+string(600) "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"