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php: Security fix CVE-2015-7803

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CVE-2015-7803 php: NULL pointer dereference in phar_get_fp_offset()

Signed-off-by: Armin Kuster <akuster@mvista.com>
This commit is contained in:
Armin Kuster 2016-02-07 11:26:47 -08:00 committed by Martin Jansa
parent c2107a12ab
commit 40eed80072
2 changed files with 83 additions and 0 deletions
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82
meta-oe/recipes-devtools/php/php/CVE-2015-7803.patch Normal file
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@ -0,0 +1,82 @@
From d698f0ae51f67c9cce870b09c59df3d6ba959244 Mon Sep 17 00:00:00 2001
From: Stanislav Malyshev <stas@php.net>
Date: Mon, 28 Sep 2015 15:51:59 -0700
Subject: [PATCH] Fix bug #69720: Null pointer dereference in
phar_get_fp_offset()
Upsteam-Status: Backport
https://git.php.net/?p=php-src.git;a=patch;h=d698f0ae51f67c9cce870b09c59df3d6ba959244
CVE: CVE-2015-7803
Signed-off-by: Armin Kuster <akuster@mvista.com>
---
ext/phar/tests/bug69720.phar | Bin 0 -> 8192 bytes
ext/phar/tests/bug69720.phpt | 40 ++++++++++++++++++++++++++++++++++++++++
ext/phar/util.c | 6 +++++-
3 files changed, 45 insertions(+), 1 deletion(-)
create mode 100644 ext/phar/tests/bug69720.phar
create mode 100644 ext/phar/tests/bug69720.phpt
Index: php-5.5.21/ext/phar/tests/bug69720.phpt
===================================================================
--- /dev/null
+++ php-5.5.21/ext/phar/tests/bug69720.phpt
@@ -0,0 +1,40 @@
+--TEST--
+Phar - bug #69720 - Null pointer dereference in phar_get_fp_offset()
+--SKIPIF--
+<?php if (!extension_loaded("phar")) die("skip"); ?>
+--FILE--
+<?php
+try {
+ // open an existing phar
+ $p = new Phar(__DIR__."/bug69720.phar",0);
+ // Phar extends SPL's DirectoryIterator class
+ echo $p->getMetadata();
+ foreach (new RecursiveIteratorIterator($p) as $file) {
+ // $file is a PharFileInfo class, and inherits from SplFileInfo
+ $temp="";
+ $temp= $file->getFileName() . "\n";
+ $temp.=file_get_contents($file->getPathName()) . "\n"; // display contents
+ var_dump($file->getMetadata());
+ }
+}
+ catch (Exception $e) {
+ echo 'Could not open Phar: ', $e;
+}
+?>
+--EXPECTF--
+
+MY_METADATA_NULL
+
+Warning: file_get_contents(phar:///%s): failed to open stream: phar error: "test.php" is not a file in phar "%s.phar" in %s.php on line %d
+array(1) {
+ ["whatever"]=>
+ int(123)
+}
+object(DateTime)#2 (3) {
+ ["date"]=>
+ string(26) "2000-01-01 00:00:00.000000"
+ ["timezone_type"]=>
+ int(3)
+ ["timezone"]=>
+ string(3) "UTC"
+}
Index: php-5.5.21/ext/phar/util.c
===================================================================
--- php-5.5.21.orig/ext/phar/util.c
+++ php-5.5.21/ext/phar/util.c
@@ -494,7 +494,11 @@ really_get_entry:
(*ret)->is_tar = entry->is_tar;
(*ret)->fp = phar_get_efp(entry, 1 TSRMLS_CC);
if (entry->link) {
- (*ret)->zero = phar_get_fp_offset(phar_get_link_source(entry TSRMLS_CC) TSRMLS_CC);
+ phar_entry_info *link = phar_get_link_source(entry TSRMLS_CC);
+ if(!link) {
+ return FAILURE;
+ }
+ (*ret)->zero = phar_get_fp_offset(link TSRMLS_CC);
} else {
(*ret)->zero = phar_get_fp_offset(entry TSRMLS_CC);
}

1
meta-oe/recipes-devtools/php/php_5.5.21.bb
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@ -14,6 +14,7 @@ SRC_URI = "http://php.net/distributions/php-${PV}.tar.bz2 \
file://acinclude-xml2-config.patch \ file://acinclude-xml2-config.patch \
file://0001-php-don-t-use-broken-wrapper-for-mkdir.patch \ file://0001-php-don-t-use-broken-wrapper-for-mkdir.patch \
file://0001-acinclude-use-pkgconfig-for-libxml2-config.patch \ file://0001-acinclude-use-pkgconfig-for-libxml2-config.patch \
file://CVE-2015-7803.patch \
" "
SRC_URI_append_class-target += " \ SRC_URI_append_class-target += " \