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