Bug 1902068 (CVE-2020-26212) - CVE-2020-26212 glpi: any CalDAV calendars is read-only for every authenticated user
Summary: CVE-2020-26212 glpi: any CalDAV calendars is read-only for every authenticate...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2020-26212
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1902069 1902070
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-11-26 17:43 UTC by Guilherme de Almeida Suckevicz
Modified: 2020-11-26 23:33 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2020-11-26 23:33:52 UTC
Embargoed:


Attachments (Terms of Use)

Description Guilherme de Almeida Suckevicz 2020-11-26 17:43:59 UTC
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.

Reference:
https://github.com/glpi-project/glpi/security/advisories/GHSA-qmw3-87hr-5wgx

Upstream patch:
https://github.com/glpi-project/glpi/commit/527280358ec78988ac57e9809d2eb21fcd74caf7

Comment 1 Guilherme de Almeida Suckevicz 2020-11-26 17:44:17 UTC
Created glpi tracking bugs for this issue:

Affects: epel-7 [bug 1902070]
Affects: fedora-all [bug 1902069]

Comment 2 Product Security DevOps Team 2020-11-26 23:33:52 UTC
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.


Note You need to log in before you can comment on or make changes to this bug.