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WordPress Neosense Theme 1.7 Shell Upload

WordPress Neosense Theme 1.7 Shell Upload
Posted Sep 19, 2016
Authored by Walter Hop

WordPress Neosense theme version 1.7 suffers from a remote shell upload vulnerability.

tags | advisory, remote, shell
SHA-256 | 483336d59b67f8d8d195f34a5ff3040d94a360e52713228620ce4ef924c1d190

WordPress Neosense Theme 1.7 Shell Upload

Change Mirror Download
Unrestricted Upload/RCE in Neosense theme for WordPress
https://lifeforms.nl/20160919/unrestricted-upload-neosense <https://lifeforms.nl/20160919/unrestricted-upload-neosense>

Vulnerability:

Neosense is a WordPress theme by dynamicpress. (https://themeforest.net/item/neosense-multipurpose-wordpress-theme/6363229 <https://themeforest.net/item/neosense-multipurpose-wordpress-theme/6363229>)

Neosense theme version 1.7 contains an unrestricted file upload vulnerability.

Version 1.7 (and possibly earlier) includes in its theme directory a copy of the "qquploader" ajax file uploader, which does not verify user authorization. Using this uploader, an attacker can upload any file to the site. The uploaded file is placed in the wp-content/uploads/YYYY/mm directory, which is normally writable.

The vulnerability can be used to achieve remote code execution by uploading a PHP script with extension .php or .phtml.

Fix:
The vulnerability was fixed in Neosense theme 1.8 by switching to WordPress core functions for file uploads.

Timeline:
- 12 Aug: Vulnerability submitted to dynamicpress
- 16 Aug: Response by dynamicpress
- 29 Aug: Neosense theme 1.8 released by dynamicpress
- 19 Sep: Vulnerability published

Credits:
The vulnerability was found by Walter Hop, Slik BV, The Netherlands.

--
Walter Hop | PGP key: https://lifeforms.nl/pgp



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