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List:       full-disclosure
Subject:    [FD] CVE-2015-5076 - Vulnerability title: Reflective XSS In X2Engine Inc. X2Engine
From:       Portcullis Advisories <advisories () portcullis-security ! com>
Date:       2015-09-25 13:02:07
Message-ID: C56B81159AD346478B2C9D1487742F0B46790CF0 () portcullis-security ! com
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Vulnerability title: Reflective XSS In X2Engine Inc. X2Engine
CVE: CVE-2015-5076
Vendor: X2Engine Inc.
Product: X2Engine
Affected version: 4.2
Fixed version: 5.2
Reported by: Simone Quatrini
Details:

It was discovered that the web application was vulnerable to reflective Cross-Site Scripting \
where user supplied data is used to generate the subsequent response. This is a normal feature \
of many applications, however, in this instance the application failed to restrict the type of \
data that was accepted and also failed to sanitise it, meaning that it could not be safely \
rendered by the browser.

A number of locations were identified as beuing vulnerable, including:

x2engine/protected/views/admin/formEditor.php:144:<a \
style="float:right;position:relative;top:10px;" href="deleteVersion?version=<?php echo \
isset($_GET['version'])?$_GET['version']:'';?>" class="x2-button">Delete Selected Version</a> \
x2engine/protected/views/admin/rollbackImport.php:99:    <?php echo Yii::t('admin','Import ID: \
'); ?><strong><?php echo $_GET['importId'];?></strong> \
x2engine/protected/views/site/listener.php:69:    if(!empty($_GET['bc'])) echo $_GET['bc']; \
x2engine/protected/views/site/listener.php:83:    <?php if (!empty($_GET['fg'])) echo 'color: \
'. $_GET['fg'] .";\n"; unset($_GET['fg']); ?> x2engine/protected/views/site/listener.php:84:    \
<?php if (!empty($_GET['bgc'])) echo 'background-color: '. $_GET['bgc'] .";\n"; \
unset($_GET['bgc']); ?> x2engine/protected/views/site/listener.php:87:        echo \
'font-family:'. FontPickerInput::getFontCss($_GET['font']) .";\n"; \
x2engine/protected/components/views/webForm.php:292: value="<?php echo \
isset($_POST['Services'][$field['fieldName']]) ? \
x2engine/protected/components/TranslationManager.php:383:<input type="hidden" name="file" \
value="<?php echo $_GET['file']; ?>"> \
x2engine/protected/tests/webscripts/x2WebTrackingTestPages/customWebLeadCaptureScriptTest.php:61:<div \
id="success">success<?php echo $_POST['x2_key']; ?></div> \
x2engine/protected/modules/contacts/controllers/ContactsController.php:577:echo $_POST['id']; \
x2engine/protected/modules/contacts/controllers/ContactsController.php:581: echo $_POST['id'];

An attacker could create a malicious link with the following URL:

http://localhost/x2engine/index.php/profile/getEvents?lastEventId=<img \
src=aonerror=alert('xss')>&lastTimestamp=1408631575&profileId=3&myProfileId=3

Further details at:

https://www.portcullis-security.com/security-research-and-downloads/security-advisories/cve-2015-5076/


Copyright:
Copyright (c) Portcullis Computer Security Limited 2015, All rights reserved worldwide. \
Permission is hereby granted for the electronic redistribution of this information. It is not \
to be edited or altered in any way without the express written consent of Portcullis Computer \
Security Limited.

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acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with \
regard to this information or its use. Any use of this information is at the user's risk. In no \
event shall the author/distributor (Portcullis Computer Security Limited) be held liable for \
any damages whatsoever arising out of or in connection with the use or spread of this \
information.

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