CVE-2021-21255 : What You Need to Know

GLPI is an open-source asset and IT management software package that provides ITIL Service Desk features, licenses tracking, and software auditing. In GLPI version 9.5.3, a vulnerability allowed the switching of entities with IDOR from a logged-in user. This issue has been addressed in version 9.5.4.

Understanding CVE-2021-21255

This section will cover what CVE-2021-21255 entails and its impact.

What is CVE-2021-21255?

CVE-2021-21255 refers to the vulnerability in GLPI version 9.5.3 that enabled unauthorized entity switching with IDOR.

The Impact of CVE-2021-21255

The vulnerability's impact was rated as MEDIUM severity with a CVSS base score of 5.8. It required low privileges but had a high impact on confidentiality.

Technical Details of CVE-2021-21255

This section will delve into the technical aspects of the CVE.

Vulnerability Description

The vulnerability allowed attackers to switch entities with IDOR, potentially compromising the integrity and confidentiality of data.

Affected Systems and Versions

GLPI version 9.5.3 was affected by this vulnerability, while the issue is fixed in version 9.5.4.

Exploitation Mechanism

The vulnerability could be exploited by an attacker with low privileges, requiring network access and user interaction.

Mitigation and Prevention

Here, we will discuss measures to mitigate and prevent exploitation of this vulnerability.

Immediate Steps to Take

Users should upgrade to GLPI version 9.5.4 to address this vulnerability and prevent unauthorized entity switching.

Long-Term Security Practices

Implementing proper authentication and authorization mechanisms can help prevent such vulnerabilities in the future.

Patching and Updates

Regularly updating software and applying security patches is crucial to maintaining a secure IT environment.