CVE-2020-26212 : Vulnerability Insights and Analysis

GLPI stands for Gestionnaire Libre de Parc Informatique and is a Free Asset and IT Management Software package. In GLPI before version 9.5.3, a vulnerability allowed any authenticated user to have read-only permissions to other users' planning, including admin users.

Understanding CVE-2020-26212

This CVE describes a security issue in GLPI versions prior to 9.5.3 that granted unauthorized read-only access to CalDAV calendars.

What is CVE-2020-26212?

In GLPI versions before 9.5.3, any authenticated user could access and view other users' planning, even if they were admin users. This unauthorized access posed a significant security risk.

The Impact of CVE-2020-26212

The vulnerability had a CVSS base score of 7.7, indicating a high severity issue. It allowed for high confidentiality impact, low privileges required, and no user interaction needed for exploitation.

Technical Details of CVE-2020-26212

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability in GLPI versions prior to 9.5.3 allowed any authenticated user to have read-only access to other users' planning, including admin users.

Affected Systems and Versions

Product: GLPI
Vendor: glpi-project
Versions Affected: < 9.5.3

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Scope: Changed
Confidentiality Impact: High
Integrity Impact: None
Availability Impact: None

Mitigation and Prevention

Protecting systems from this vulnerability is crucial to maintaining security.

Immediate Steps to Take

Upgrade GLPI to version 9.5.3 or later to mitigate the vulnerability.
Remove the

caldav.php

file as a workaround to block access to the CalDAV server.

Long-Term Security Practices

Regularly update software to the latest versions to patch known vulnerabilities.
Implement proper access controls and authorization mechanisms to prevent unauthorized access.

Patching and Updates

Apply patches and updates provided by the vendor to address security issues promptly.