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alpine-pkg/testing/php5.4/d05-u005-CVE-2016-5773.patch

65 lines
2.4 KiB

Index: php5-5.4.45/ext/standard/tests/strings/bug72434.phpt
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ php5-5.4.45/ext/standard/tests/strings/bug72434.phpt 2016-08-19 14:46:18.000000000 +0200
@@ -0,0 +1,33 @@
+--TEST--
+Bug #72434: ZipArchive class Use After Free Vulnerability in PHP's GC algorithm and unserialize
+--SKIPIF--
+<?php
+if(!class_exists('zip')) die('ZipArchive');
+?>
+--FILE--
+<?php
+// The following array will be serialized and this representation will be freed later on.
+$free_me = array(new StdClass());
+// Create our payload and unserialize it.
+$serialized_payload = 'a:3:{i:1;N;i:2;O:10:"ZipArchive":1:{s:8:"filename";'.serialize($free_me).'}i:1;R:4;}';
+$unserialized_payload = unserialize($serialized_payload);
+gc_collect_cycles();
+// The reference counter for $free_me is at -1 for PHP 7 right now.
+// Increment the reference counter by 1 -> rc is 0
+$a = $unserialized_payload[1];
+// Increment the reference counter by 1 again -> rc is 1
+$b = $a;
+// Trigger free of $free_me (referenced by $m[1]).
+unset($b);
+$fill_freed_space_1 = "filler_zval_1";
+$fill_freed_space_2 = "filler_zval_2";
+$fill_freed_space_3 = "filler_zval_3";
+$fill_freed_space_4 = "filler_zval_4";
+debug_zval_dump($unserialized_payload[1]);
+?>
+--EXPECTF--
+array(1) refcount(1){
+ [0]=>
+ object(stdClass)#%d (0) refcount(3){
+ }
+}
Index: php5-5.4.45/ext/zip/php_zip.c
===================================================================
--- php5-5.4.45.orig/ext/zip/php_zip.c 2016-08-19 14:46:18.000000000 +0200
+++ php5-5.4.45/ext/zip/php_zip.c 2016-08-19 14:46:18.000000000 +0200
@@ -1015,6 +1015,14 @@
}
/* }}} */
+static HashTable *php_zip_get_gc(zval *object, zval ***gc_data, int *gc_data_count TSRMLS_DC) /* {{{ */
+{
+ *gc_data = NULL;
+ *gc_data_count = 0;
+ return zend_std_get_properties(object TSRMLS_CC);
+}
+/* }}} */
+
static HashTable *php_zip_get_properties(zval *object TSRMLS_DC)/* {{{ */
{
ze_zip_object *obj;
@@ -2777,6 +2785,7 @@
zip_object_handlers.clone_obj = NULL;
zip_object_handlers.get_property_ptr_ptr = php_zip_get_property_ptr_ptr;
+ zip_object_handlers.get_gc = php_zip_get_gc;
zip_object_handlers.get_properties = php_zip_get_properties;
zip_object_handlers.read_property = php_zip_read_property;
zip_object_handlers.has_property = php_zip_has_property;