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[Bug 598454] Re: ORM: search should return empty list when meeting a NULL many2one in the middle of the evaluation of a chained domain expression.

To: c2c-oerpscenario@xxxxxxxxxxxxxxxxxxx
From: "Olivier Dony \(OpenERP\)" <598454@xxxxxxxxxxxxxxxxxx>
Date: Tue, 23 Nov 2010 22:13:13 -0000
Reply-to: Bug 598454 <598454@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Changed in: openobject-server
   Importance: Undecided => Medium

** Changed in: openobject-server
    Milestone: 6.0 => 6.0-rc2

** Changed in: openobject-server
     Assignee: (unassigned) => OpenERP's Framework R&D (openerp-dev-framework)

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ORM: search should return empty list when meeting a NULL many2one in the middle of the evaluation of a chained domain expression.
https://bugs.launchpad.net/bugs/598454
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Status in OpenObject Server: Confirmed

Bug description:
Search should return empty list when meeting a NULL many2one in the middle of the evaluation of a chained domain expression.

Given the record rule domain:
   [('employee_id.department_id.manager_id.user_id.id', '=', user.id)]
Without the patch, the domain also matches objects whose employee is not in a department, i.e. it explicitly searches for object for which 'employee_id.department_id IS NULL'.
This behavior is a security risk (potential information leakage).

I guess there could be a better way than my patch to handle this.