CVE-2021-27676 Explained : Impact and Mitigation

Centreon version 20.10.2 is impacted by a cross-site scripting (XSS) vulnerability, specifically affecting the dep_description and dep_name parameters, making them vulnerable to stored XSS attacks. To exploit this vulnerability, a user needs to log in and navigate to the Configuration > Notifications > Hosts page.

Understanding CVE-2021-27676

This section provides insights into the nature and impact of the CVE-2021-27676 vulnerability.

What is CVE-2021-27676?

CVE-2021-27676 refers to a stored cross-site scripting (XSS) vulnerability present in Centreon version 20.10.2. It allows threat actors to execute malicious scripts in the context of an authenticated user.

The Impact of CVE-2021-27676

The vulnerability poses a significant risk as it enables attackers to inject malicious scripts, leading to unauthorized access, data theft, and potential compromise of the affected system.

Technical Details of CVE-2021-27676

In this section, we delve into the specifics of the vulnerability and its implications.

Vulnerability Description

The vulnerability arises due to inadequate input validation in the dep_description and dep_name parameters, allowing attackers to store and execute malicious scripts.

Affected Systems and Versions

Centreon version 20.10.2 is the specific version impacted by this vulnerability.

Exploitation Mechanism

To exploit the vulnerability, attackers need to be authenticated users and access the Configuration > Notifications > Hosts page.

Mitigation and Prevention

Here, we explore the steps to mitigate the CVE-2021-27676 vulnerability and prevent potential exploitation.

Immediate Steps to Take

Users are advised to update Centreon to a patched version that addresses the XSS vulnerability. Additionally, implementing strong access controls can help mitigate the risk.

Long-Term Security Practices

Regular security audits, continuous monitoring, and security awareness training can enhance the overall security posture and prevent future vulnerabilities.

Patching and Updates

It is crucial to stay updated with security patches released by Centreon to protect the system from known vulnerabilities and security risks.