SB2020112527 - Improper access control in GLPI

Description

This security bulletin contains information about 1 vulnerability.

1) Improper access control (CVE-ID: CVE-2020-26212)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote user to disclose sensitive information.

The vulnerability exists due to improper access control in the CalDAV calendar access control logic when handling CalDAV synchronization requests. A remote user can authenticate with valid user credentials and access other users' or groups' calendars to disclose sensitive information.

The exposed access is read-only and affects personal and group planning data, including administrator calendars.

Remediation

Install update from vendor's website.

References

• https://github.com/glpi-project/glpi/security/advisories/GHSA-qmw3-87hr-5wgx
• https://github.com/glpi-project/glpi/commit/527280358ec78988ac57e9809d2eb21fcd74caf7