drupal6-ctools: multiple vulnerabilities

Cross Site Scripting (XSS)

Ctools in Drupal 6 provides a number of APIs and extensions for Drupal, and is a dependency for many of the most popular modules, including Views, Panels and Entityreference. Many features introduced in Drupal Core once lived in ctools.

This vulnerability can be mitigated by the fact that ctools must load its javascript on the page and the user has access to submit data through a form (such as a comment or node) that allows 'a' tags.

Access bypass

This module provides a number of APIs and extensions for Drupal, and is a dependency for many of the most popular modules, including Views, Panels and Features.

The module doesn't sufficiently verify the "edit" permission for the "content type" plugins that are used on Panels and similar systems to place content and functionality on a page.

This vulnerability is mitigated by the fact that the user must have access to edit a display via a Panels display system, e.g. via Panels pages, Mini Panels, Panel Nodes, Panelizer displays, IPE, Panels Everywhere, etc. Furthermore, either a contributed module provides a CTools content type plugin, or a custom plugin must be written that inherits permissions from another plugin and must have a different permission defined; if no "edit" permission is set up for the child object CTools did not check the permissions of the parent object. One potential scenario would allow people who did not have edit access to Fieldable Panels Panes panes, which were specifically set to not be reusable, to edit them despite the person's lack of access.