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From f59b67ae50064560d7bfcdb0d6a8ab284179053c Mon Sep 17 00:00:00 2001
From: Stanislav Malyshev <stas@php.net>
Date: Tue, 14 Apr 2015 00:03:50 -0700
Subject: [PATCH] Fix bug #69441 (Buffer Overflow when parsing tar/zip/phar in
phar_set_inode)
---
ext/phar/phar_internal.h | 9 ++++++---
ext/phar/tests/bug69441.phar | Bin 0 -> 5780 bytes
ext/phar/tests/bug69441.phpt | 21 +++++++++++++++++++++
3 files changed, 27 insertions(+), 3 deletions(-)
create mode 100644 ext/phar/tests/bug69441.phar
create mode 100644 ext/phar/tests/bug69441.phpt
diff --git a/ext/phar/phar_internal.h b/ext/phar/phar_internal.h
index fcfc864..84282d2 100644
--- a/ext/phar/phar_internal.h
+++ b/ext/phar/phar_internal.h
@@ -618,10 +618,13 @@ static inline void phar_set_inode(phar_entry_info *entry TSRMLS_DC) /* {{{ */
{
char tmp[MAXPATHLEN];
int tmp_len;
+ size_t len;
- tmp_len = entry->filename_len + entry->phar->fname_len;
- memcpy(tmp, entry->phar->fname, entry->phar->fname_len);
- memcpy(tmp + entry->phar->fname_len, entry->filename, entry->filename_len);
+ tmp_len = MIN(MAXPATHLEN, entry->filename_len + entry->phar->fname_len);
+ len = MIN(entry->phar->fname_len, tmp_len);
+ memcpy(tmp, entry->phar->fname, len);
+ len = MIN(tmp_len - len, entry->filename_len);
+ memcpy(tmp + entry->phar->fname_len, entry->filename, len);
entry->inode = (unsigned short)zend_get_hash_value(tmp, tmp_len);
}
/* }}} */
diff --git a/ext/phar/tests/bug69441.phpt b/ext/phar/tests/bug69441.phpt
new file mode 100644
index 0000000..ed461cf
--- /dev/null
+++ b/ext/phar/tests/bug69441.phpt
@@ -0,0 +1,21 @@
+--TEST--
+Phar: bug #69441: Buffer Overflow when parsing tar/zip/phar in phar_set_inode
+--SKIPIF--
+<?php if (!extension_loaded("phar")) die("skip"); ?>
+--FILE--
+<?php
+$fname = dirname(__FILE__) . '/bug69441.phar';
+try {
+$r = new Phar($fname, 0);
+} catch(UnexpectedValueException $e) {
+ echo $e;
+}
+?>
+
+==DONE==
+--EXPECTF--
+exception 'UnexpectedValueException' with message 'phar error: corrupted central directory entry, no magic signature in zip-based phar "%s/bug69441.phar"' in %s/bug69441.php:%d
+Stack trace:
+#0 %s/bug69441.php(%d): Phar->__construct('%s', 0)
+#1 {main}
+==DONE==
\ No newline at end of file
--
2.1.4
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