PivotX 2.3.11: Code ExecutionDate: 2016-03-15 13:48:41
|Affected Product:||PivotX 2.3.11|
|Fixed in:||not fixed|
|Fixed Version Link:||n/a|
|Vulnerability Type:||Code Execution|
|Reported to vendor:||01/20/2016|
|Disclosed to public:||03/15/2016|
|Release mode:||Full Disclosure|
|Credits||Tim Coen of curesec GmbH|
PivotX is a CMS for blogging written in PHP. In version 2.3.11, it is vulnerable to code execution by authenticated users because it does not check the extension of files when renaming them.
CVSS: High 9.0 AV:N/AC:L/Au:S/C:C/I:C/A:C
The file upload functionality checks file extensions when uploading files to prevent the uploading of malicious files such as PHP files. However, the rename function does not check the extension of the new filename, leading to code execution.
An account in the advanced users, admins, or superadmins role is required to upload files.
Proof of Concept
1. Upload an image file containing PHP code with a valid extension such as png 2. rename it so it has a PHP extension: http://localhost/pivotx_latest/pivotx/index.php?page=media&file=imageshell.png&pivotxsession=ovyyn4ob2jc5ym92&answer=shell.php
This issue was not fixed by the vendor.
5. Report Timeline
|01/20/2016||Informed Vendor about Issue|
|01/29/2016||Vendor replies, PivotX is not maintained anymore|
|03/15/2016||Disclosed to public|