Vulnerability title: Arbitrary File Upload In X2Engine Inc. X2Engine CVE: CVE-2015-5074 Vendor: X2Engine Inc. Product: X2Engine Affected version: 4.2 Fixed version: 5.2 Reported by: Simone Quatrini Details:
It was discovered that authenticated users were able to upload files of any type providing that the file did not have an extension that was listed in the following blacklist:
const EXT_BLACKLIST = '/\.\s*(P<ext>html|htm|js|jsb|mhtml|mht|xhtml|xht|php|phtml|php3|php4|php5|phps|shtml|jhtml|pl|py|cgi|exe|scr|dll|msi|vbs|bat|com|pif|cmd|vxd|cpl|ini|conf|cnf|key|iv|htaccess)\b/i';
However, there is another common (not present in regexp) that allow PHP execution: .PHT. It is therefore possible to execute any PHP code on the remote system.
Further details at:
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.
Disclaimer: The information herein contained may change without notice. Use of this information constitutes 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.
This email originates from the systems of Portcullis
Computer Security Limited, a Private limited company,
registered in England in accordance with the Companies
Act under number 02763799. The registered office
address of Portcullis Computer Security Limited is:
Portcullis House, 2 Century Court, Tolpits Lane, Watford,
United Kingdom, WD18 9RS.
The information in this email is confidential and may be legally privileged. It is intended solely for the addressee. Any opinions expressed are those of the individual and do not represent the opinion of the organisation. Access to this email by persons other than the intended recipient is strictly prohibited. If you are not the intended recipient, any disclosure, copying, distribution or other action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. When addressed to our clients any opinions or advice contained in this email is subject to the terms and conditions expressed in the applicable Portcullis Computer Security Limited terms of business.
This e-mail message has been scanned for Viruses and Content and cleared by MailMarshal.