Patch for 74603

74603.diff

commit fec9a2e1b599b870c22733047d16cb1fa18ca711
Author: Stanislav Malyshev <stas@php.net>
Date:   Tue Jun 20 00:09:01 2017 -0700

    Fix bug #74603 - use correct buffer size

diff --git a/Zend/tests/bug74603.ini b/Zend/tests/bug74603.ini
new file mode 100644
index 0000000..8d74a57
--- /dev/null
+++ b/Zend/tests/bug74603.ini
@@ -0,0 +1 @@
+0=0&~2000000000
diff --git a/Zend/tests/bug74603.phpt b/Zend/tests/bug74603.phpt
new file mode 100644
index 0000000..b3194ec
--- /dev/null
+++ b/Zend/tests/bug74603.phpt
@@ -0,0 +1,15 @@
+--TEST--
+Bug #74603 (PHP INI Parsing Stack Buffer Overflow Vulnerability)
+--SKIPIF--
+<?php
+if (PHP_INT_MAX !== 2147483647)
+        die('skip for 32-bit only');
+--FILE--
+<?php
+var_dump(parse_ini_file(__DIR__ . "/bug74603.ini", true, INI_SCANNER_NORMAL));
+?>
+--EXPECT--
+array(1) {
+  [0]=>
+  string(1) "0"
+}
diff --git a/Zend/zend_ini_parser.y b/Zend/zend_ini_parser.y
index ea4771a..ad8a84d 100644
--- a/Zend/zend_ini_parser.y
+++ b/Zend/zend_ini_parser.y
@@ -53,7 +53,7 @@ static void zend_ini_do_op(char type, zval *result, zval *op1, zval *op2)
 {
 	int i_result;
 	int i_op1, i_op2;
-	char str_result[MAX_LENGTH_OF_LONG];
+	char str_result[MAX_LENGTH_OF_LONG+1];
 
 	i_op1 = atoi(Z_STRVAL_P(op1));
 	free(Z_STRVAL_P(op1));