CVE-2020-26212 Information

Description

GLPI stands for Gestionnaire Libre de Parc Informatique and it is a Free Asset and IT Management Software package that provides ITIL Service Desk features licenses tracking and software auditing. In GLPI before version 9.5.3 any authenticated user has read-only permissions to the planning of every other user even admin ones. Steps to reproduce the behavior: 1. Create a new planning with ’eduardo.mozart’ user (from ‘IT’ group that belongs to ‘Super-admin’) into it’s personal planning at ‘Assistance’ > ‘Planning’. 2. Copy the CalDAV url and use a CalDAV client (e.g. Thunderbird) to sync the planning with the provided URL. 3. Inform the username and password from any valid user (e.g. ‘camila’ from ‘Proativa’ group). 4. ‘Camila’ has read-only access to ’eduardo.mozart’ personal planning. The same behavior happens to any group. E.g. ‘Camila’ has access to ‘IT’ group planning even if she doesn’t belong to this group and has a ‘Self-service’ profile permission). This issue is fixed in version 9.5.3. As a workaround one can remove the caldav.php file to block access to CalDAV server.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Reference

https://github.com/glpi-project/glpi/security/advisories/GHSA-qmw3-87hr-5wgx https://github.com/glpi-project/glpi/releases/tag/9.5.3 https://github.com/glpi-project/glpi/commit/527280358ec78988ac57e9809d2eb21fcd74caf7 GLPI stands for Gestionnaire Libre de Parc Informatique and it is a Free Asset and IT Management Software package that provides ITIL Service Desk features licenses tracking and software auditing. In GLPI before version 9.5.3 any authenticated user has read-only permissions to the planning of every other user even admin ones. Steps to reproduce the behavior: 1. Create a new planning with ’eduardo.mozart’ user (from ‘IT’ group that belongs to ‘Super-admin’) into it’s personal planning at ‘Assistance’

‘Planning’. 2. Copy the CalDAV url and use a CalDAV client (e.g. Thunderbird) to sync the planning with the provided URL. 3. Inform the username and password from any valid user (e.g. ‘camila’ from ‘Proativa’ group). 4. ‘Camila’ has read-only access to ’eduardo.mozart’ personal planning. The same behavior happens to any group. E.g. ‘Camila’ has access to ‘IT’ group planning even if she doesn’t belong to this group and has a ‘Self-service’ profile permission). This issue is fixed in version 9.5.3. As a workaround one can remove the caldav.php file to block access to CalDAV server.

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

6.5