CVE-2021-36884 : Exploit Details and Defense Strategies

A detailed analysis of the Authenticated Persistent Cross-Site Scripting (XSS) vulnerability found in the WordPress Backup Migration plugin version <= 1.1.5.

Understanding CVE-2021-36884

This section delves into the nature of the vulnerability and its impact.

What is CVE-2021-36884?

The CVE-2021-36884 is an Authenticated Persistent Cross-Site Scripting (XSS) vulnerability detected in the WordPress Backup Migration plugin versions equal to or less than 1.1.5. This flaw could allow an attacker to inject malicious scripts into web pages viewed by other users.

The Impact of CVE-2021-36884

With a CVSS v3.1 base score of 4.8 and a severity level of MEDIUM, this vulnerability could be exploited by a threat actor with high privileges, requiring user interaction. The impact includes low confidentiality and integrity, with no availability impact.

Technical Details of CVE-2021-36884

This section provides specific technical details of the vulnerability.

Vulnerability Description

The vulnerability involves an Authenticated Persistent Cross-Site Scripting (XSS) issue in the WordPress Backup Migration plugin version <= 1.1.5.

Affected Systems and Versions

The vulnerability affects Backup Migration (WordPress plugin) version <= 1.1.5.

Exploitation Mechanism

An attacker with high privileges can exploit this vulnerability by injecting malicious scripts through the WordPress Backup Migration plugin.

Mitigation and Prevention

Protective measures and solutions to address the CVE-2021-36884 vulnerability.

Immediate Steps to Take

Users are advised to update the WordPress Backup Migration plugin to version 1.1.6 or higher to mitigate this vulnerability.

Long-Term Security Practices

Regularly update plugins and maintain good security practices to prevent XSS vulnerabilities.

Patching and Updates

Stay informed about security patches and updates from relevant vendors to ensure protection against known vulnerabilities.