Vigil@nce - WordPress Advanced uploader: directory traversal via the request parameter destinations
August 2016 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An attacker can traverse directories via destinations of WordPress
Advanced uploader, in order to read a file outside the service
root path.
Impacted products: WordPress Plugins not comprehensive.
Severity: 2/4.
Creation date: 06/06/2016.
DESCRIPTION OF THE VULNERABILITY
The Advanced uploader plugin can be installed on WordPress.
However, user’s data are directly inserted in an access path.
Sequences such as "/.." can thus be used to go in the upper
directory.
An attacker can therefore traverse directories via destinations of
WordPress Advanced uploader, in order to read a file outside the
service root path.
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