Impact
Pageflow has a membership edit feature which allows users to edit the roles of user memberships associated with an account that they have the manager role to (including their own). While the Entity dropdown select field is greyed out in the UI, an attacker can use tools which allow sending arbitrary HTTP request to craft a request to the /admin/users/{user_id}/memberships/{membership_id} endpoint containing an additional membership[entity_id] parameter. This parameter is honored when the membership is updated, allowing an attacker to update the membership object associated with their own account (with manager role) to be associated with a different attacker-chosen account instead. Since account_ids are enumerable, an attacker can compromise all accounts present on the platform.
Mitigation
Upgrade to version 15.7.1 or 14.5.2 of the pageflow gem.
For more information
If you have any questions or comments about this advisory email us at info(at)codevise.de
Credits
Positive Security
Impact
Pageflow has a membership edit feature which allows users to edit the roles of user memberships associated with an account that they have the
managerrole to (including their own). While theEntitydropdown select field is greyed out in the UI, an attacker can use tools which allow sending arbitrary HTTP request to craft a request to the/admin/users/{user_id}/memberships/{membership_id}endpoint containing an additionalmembership[entity_id]parameter. This parameter is honored when the membership is updated, allowing an attacker to update the membership object associated with their own account (withmanagerrole) to be associated with a different attacker-chosen account instead. Sinceaccount_ids are enumerable, an attacker can compromise all accounts present on the platform.Mitigation
Upgrade to version 15.7.1 or 14.5.2 of the
pageflowgem.For more information
If you have any questions or comments about this advisory email us at info(at)codevise.de
Credits
Positive Security