2017-02-07 20:27:55 +01:00
|
|
|
<?php
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Tests for XSS
|
|
|
|
|
*
|
|
|
|
|
* @link http://www.egroupware.org
|
|
|
|
|
* @author Nathan Gray
|
|
|
|
|
* @package api
|
|
|
|
|
* @copyright (c) 2017 Nathan Gray
|
|
|
|
|
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
|
|
|
|
|
*/
|
|
|
|
|
namespace EGroupware\Api;
|
|
|
|
|
|
2017-10-23 10:14:14 +02:00
|
|
|
require_once realpath(__DIR__.'/../../src/loader/common.php'); // autoloader & check_load_extension
|
2017-02-07 20:27:55 +01:00
|
|
|
//
|
|
|
|
|
// We're testing security.php
|
2017-10-23 10:14:14 +02:00
|
|
|
require_once realpath(__DIR__.'/../../src/loader/security.php');
|
2017-02-07 20:27:55 +01:00
|
|
|
|
2017-08-18 11:45:10 +02:00
|
|
|
use PHPUnit\Framework\TestCase as TestCase;
|
2017-02-07 20:27:55 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
class SecurityTest extends TestCase {
|
|
|
|
|
|
2017-02-08 00:02:06 +01:00
|
|
|
public function setUp()
|
|
|
|
|
{
|
|
|
|
|
// _check_script_tag uses HtmLawed, which calls GLOBALS['egw']->link()
|
|
|
|
|
$GLOBALS['egw'] = $this->getMockBuilder('Egw')
|
|
|
|
|
->disableOriginalConstructor()
|
|
|
|
|
->setMethods(['link', 'setup'])
|
|
|
|
|
->getMock();
|
|
|
|
|
}
|
|
|
|
|
|
2017-02-07 20:27:55 +01:00
|
|
|
public function tearDown()
|
|
|
|
|
{
|
|
|
|
|
unset($GLOBALS['egw_inset_vars']);
|
2017-02-08 00:02:06 +01:00
|
|
|
|
|
|
|
|
// Must remember to clear this, or other tests may break
|
|
|
|
|
unset($GLOBALS['egw']);
|
2017-02-07 20:27:55 +01:00
|
|
|
}
|
2017-08-18 11:45:10 +02:00
|
|
|
|
2017-02-07 20:27:55 +01:00
|
|
|
/**
|
|
|
|
|
* Test some strings for bad stuff
|
2017-08-18 11:45:10 +02:00
|
|
|
*
|
2017-02-07 20:27:55 +01:00
|
|
|
* @param String $pattern String to check
|
|
|
|
|
* @param boolean $should_fail If we expect this string to fail
|
2017-08-18 11:45:10 +02:00
|
|
|
*
|
2017-02-07 20:27:55 +01:00
|
|
|
* @dataProvider patternProvider
|
|
|
|
|
*/
|
|
|
|
|
public function testPatterns($pattern, $should_fail)
|
|
|
|
|
{
|
|
|
|
|
$test = array($pattern);
|
|
|
|
|
unset($GLOBALS['egw_unset_vars']);
|
|
|
|
|
_check_script_tag($test,'test', false);
|
|
|
|
|
$this->assertEquals(isset($GLOBALS['egw_unset_vars']), $should_fail);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
public function patternProvider()
|
|
|
|
|
{
|
|
|
|
|
return array(
|
|
|
|
|
// pattern, true: should fail, false: should not fail
|
|
|
|
|
Array('< script >alert(1)< / script >', true),
|
|
|
|
|
Array('<span onMouseOver ="alert(1)">blah</span>', true),
|
|
|
|
|
Array('<a href= "JaVascript: alert(1)">Click Me</a>', true),
|
|
|
|
|
// from https://www.acunetix.com/websitesecurity/cross-site-scripting/
|
|
|
|
|
Array('<body onload=alert("XSS")>', true),
|
|
|
|
|
Array('<body background="javascript:alert("XSS")">', true),
|
|
|
|
|
Array('<iframe src=”http://evil.com/xss.html”>', true),
|
|
|
|
|
Array('<input type="image" src="javascript:alert(\'XSS\');">', true),
|
|
|
|
|
Array('<link rel="stylesheet" href="javascript:alert(\'XSS\');">', true),
|
|
|
|
|
Array('<table background="javascript:alert(\'XSS\')">', true),
|
|
|
|
|
Array('<td background="javascript:alert(\'XSS\')">', true),
|
|
|
|
|
Array('<div style="background-image: url(javascript:alert(\'XSS\'))">', true),
|
|
|
|
|
Array('<div style="width: expression(alert(\'XSS\'));">', true),
|
|
|
|
|
Array('<object type="text/x-scriptlet" data="http://hacker.com/xss.html">', true),
|
|
|
|
|
// false positiv tests
|
|
|
|
|
Array('If 1 < 2, what does that mean for description, if 2 > 1.', false),
|
|
|
|
|
Array('If 1 < 2, what does that mean for a script, if 2 > 1.', false),
|
|
|
|
|
Array('<div>Script and Javascript: not evil ;-)', false),
|
|
|
|
|
Array('<span>style=background-color', false),
|
|
|
|
|
Array('<font face="Script MT Bold" size="4"><span style="font-size:16pt;">Hugo Sonstwas</span></font>', false),
|
|
|
|
|
Array('<mathias@stylite.de>', false)
|
|
|
|
|
);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Test some URLs with bad stuff
|
|
|
|
|
*
|
|
|
|
|
* @param String $url
|
|
|
|
|
* @param Array $vectors
|
|
|
|
|
*
|
|
|
|
|
* @dataProvider urlProvider
|
|
|
|
|
*/
|
|
|
|
|
public function testURLs($url, $vectors = FALSE)
|
|
|
|
|
{
|
|
|
|
|
// no all xss attack vectors from http://ha.ckers.org/xssAttacks.xml are relevant here! (needs interpretation)
|
|
|
|
|
if (!$vectors)
|
|
|
|
|
{
|
2017-02-08 16:59:39 +01:00
|
|
|
$this->markTestSkipped("Could not download or parse $url with attack vectors");
|
2017-02-07 20:27:55 +01:00
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
foreach($vectors as $line => $pattern)
|
|
|
|
|
{
|
|
|
|
|
$test = array($pattern);
|
|
|
|
|
_check_script_tag($test, 'line '.(1+$line), false);
|
|
|
|
|
|
|
|
|
|
$this->assertTrue(isset($GLOBALS['egw_unset_vars']), $line . ': ' . $pattern);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
public function urlProvider()
|
|
|
|
|
{
|
|
|
|
|
$urls = array(
|
|
|
|
|
// we currently fail 76 of 666 test, thought they seem not to apply to our use case, as we check request data
|
|
|
|
|
'https://gist.github.com/JohannesHoppe/5612274' => file(
|
|
|
|
|
'https://gist.githubusercontent.com/JohannesHoppe/5612274/raw/60016bccbfe894dcd61a6be658a4469e403527de/666_lines_of_XSS_vectors.html'),
|
|
|
|
|
// we currently fail 44 of 140 tests, thought they seem not to apply to our use case, as we check request data
|
|
|
|
|
'https://html5sec.org/' => call_user_func(function() {
|
|
|
|
|
$payloads = $items = null;
|
2017-02-08 00:02:06 +01:00
|
|
|
try
|
|
|
|
|
{
|
|
|
|
|
if (!($items_js = file_get_contents('https://html5sec.org/items.js')) ||
|
|
|
|
|
!preg_match_all("|^\s+'data'\s+:\s+'(.*)',$|m", $items_js, $items, PREG_PATTERN_ORDER) ||
|
|
|
|
|
!($payload_js = file_get_contents('https://html5sec.org/payloads.js')) ||
|
|
|
|
|
!preg_match_all("|^\s+'([^']+)'\s+:\s+'(.*)',$|m", $payload_js, $payloads, PREG_PATTERN_ORDER))
|
|
|
|
|
{
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
catch (Exception $e)
|
2017-02-07 20:27:55 +01:00
|
|
|
{
|
2017-08-18 11:45:10 +02:00
|
|
|
unset($e);
|
2017-02-07 20:27:55 +01:00
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
$replace = array(
|
|
|
|
|
"\\'" => "'",
|
|
|
|
|
'\\\\'=> '\\,',
|
|
|
|
|
'\r' => "\r",
|
|
|
|
|
'\n' => "\n",
|
|
|
|
|
);
|
|
|
|
|
foreach($payloads[1] as $n => $from) {
|
|
|
|
|
$replace['%'.$from.'%'] = $payloads[2][$n];
|
|
|
|
|
}
|
|
|
|
|
return array_map(function($item) use ($replace) {
|
|
|
|
|
return strtr($item, $replace);
|
|
|
|
|
}, $items[1]);
|
|
|
|
|
}),
|
|
|
|
|
);
|
|
|
|
|
|
|
|
|
|
$test_data = array();
|
|
|
|
|
|
|
|
|
|
foreach($urls as $url => $vectors)
|
|
|
|
|
{
|
|
|
|
|
$test_data[] = array(
|
|
|
|
|
$url, $vectors
|
|
|
|
|
);
|
|
|
|
|
}
|
|
|
|
|
return $test_data;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Test safe unserialization
|
|
|
|
|
*
|
|
|
|
|
* @param String $str Serialized string to be checked
|
|
|
|
|
* @param boolean $result If we expect the string to fail or not
|
|
|
|
|
*
|
|
|
|
|
* @dataProvider unserializeProvider
|
2017-10-17 13:29:17 +02:00
|
|
|
* @requires PHP < 7
|
2017-02-07 20:27:55 +01:00
|
|
|
*/
|
2017-10-17 13:29:17 +02:00
|
|
|
public function testObjectsCannotBeUnserializedInPhp5($str, $result)
|
|
|
|
|
{
|
|
|
|
|
$r=@php_safe_unserialize($str);
|
|
|
|
|
|
2017-10-17 16:48:17 +02:00
|
|
|
$this->assertSame($result, (bool)$r, 'Save unserialize failed');
|
2017-10-17 13:29:17 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Test safe unserialization
|
|
|
|
|
*
|
|
|
|
|
* @param String $str Serialized string to be checked
|
|
|
|
|
* @param boolean $result If we expect the string to fail or not
|
|
|
|
|
*
|
|
|
|
|
* @dataProvider unserializeProvider
|
|
|
|
|
* @requires PHP 7
|
|
|
|
|
*/
|
|
|
|
|
public function testObjectsCannotBeUnserializedInPhp7($str, $result)
|
2017-02-07 20:27:55 +01:00
|
|
|
{
|
|
|
|
|
$r=@php_safe_unserialize($str);
|
|
|
|
|
|
|
|
|
|
if((bool)($r) !== $result)
|
|
|
|
|
{
|
|
|
|
|
if (!$result)
|
|
|
|
|
{
|
2017-10-17 13:29:17 +02:00
|
|
|
$matches = null;
|
|
|
|
|
if (preg_match_all('/([^ ]+) Object\(/', array2string($r), $matches))
|
2017-02-07 20:27:55 +01:00
|
|
|
{
|
2017-10-17 13:29:17 +02:00
|
|
|
foreach($matches[1] as $class)
|
2017-02-07 20:27:55 +01:00
|
|
|
{
|
2017-10-17 13:29:17 +02:00
|
|
|
if (!preg_match('/^__PHP_Incomplete_Class(#\d+)?$/', $class))
|
2017-02-07 20:27:55 +01:00
|
|
|
{
|
2017-10-17 13:29:17 +02:00
|
|
|
$this->fail($str);
|
2017-02-07 20:27:55 +01:00
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
$this->fail("false positive: $str");
|
|
|
|
|
}
|
|
|
|
|
}
|
2017-10-17 13:29:17 +02:00
|
|
|
// Avoid this test getting reported as no assertions, we do the testing
|
|
|
|
|
// in the foreach loop
|
|
|
|
|
$this->assertTrue(true);
|
2017-02-07 20:27:55 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Data set for unserialize test
|
|
|
|
|
*/
|
|
|
|
|
public function unserializeProvider()
|
|
|
|
|
{
|
2017-02-08 20:31:49 +01:00
|
|
|
$tests = array(
|
2017-02-07 20:27:55 +01:00
|
|
|
// Serialized string, expected result
|
|
|
|
|
// things unsafe to unserialize
|
|
|
|
|
Array("O:34:\"Horde_Kolab_Server_Decorator_Clean\":2:{s:43:\"\x00Horde_Kolab_Server_Decorator_Clean\x00_server\";", false),
|
|
|
|
|
Array("O:20:\"Horde_Prefs_Identity\":2:{s:9:\"\x00*\x00_prefs\";O:11:\"Horde_Prefs\":2:{s:8:\"\x00*\x00_opts\";a:1:{s:12:\"sizecallback\";", false),
|
|
|
|
|
Array("a:2:{i:0;O:12:\"Horde_Config\":1:{s:13:\"\x00*\x00_oldConfig\";s:#{php_injection.length}:\"#{php_injection}\";}i:1;s:13:\"readXMLConfig\";}}", false),
|
|
|
|
|
Array('a:6:{i:0;i:0;i:1;d:2;i:2;s:4:"ABCD";i:3;r:3;i:4;O:8:"my_Class":2:{s:1:"a";r:6;s:1:"b";N;};i:5;C:16:"SplObjectStorage":14:{x:i:0;m:a:0:{}}', false),
|
|
|
|
|
Array(serialize(new \stdClass()), false),
|
|
|
|
|
Array(serialize(array(new \stdClass(), new \SplObjectStorage())), false),
|
|
|
|
|
// string content, safe to unserialize
|
|
|
|
|
Array(serialize('O:8:"stdClass"'), true),
|
|
|
|
|
Array(serialize('C:16:"SplObjectStorage"'), true),
|
2017-02-08 20:31:49 +01:00
|
|
|
Array(serialize(array('a', 'O:8:"stdClass"', 'b', 'C:16:"SplObjectStorage"')), true)
|
2017-02-07 20:27:55 +01:00
|
|
|
);
|
2017-02-08 20:31:49 +01:00
|
|
|
if (PHP_VERSION >= 7)
|
|
|
|
|
{
|
|
|
|
|
// Fails our php<7 regular expression, because it has correct delimiter (^|;|{) in front of pattern :-(
|
|
|
|
|
$tests[] = Array(serialize('O:8:"stdClass";C:16:"SplObjectStorage"'), true);
|
|
|
|
|
}
|
|
|
|
|
return $tests;
|
2017-02-07 20:27:55 +01:00
|
|
|
}
|
|
|
|
|
}
|
