AddThis <= 5.0.2 - Authenticated Stored Cross-Site Scripting

2015-06-10 00:00
James Hooker

Strategic Overview

Vulnerability Overview

The AddThis plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘at_async_loading’ AJAX action in versions up to, and including, 5.0.2 due to insufficient input sanitization and output escaping. This makes it possible for Subscriber-level attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Technical Analysis

REMEDIATION: Update to version 5.0.3, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C