CVE-2023-27621 Explained : Impact and Mitigation

This CVE, assigned by Patchstack, highlights a vulnerability in the WordPress Livestream Notice plugin version 1.2.0 and below. The vulnerability is related to Cross-Site Scripting (XSS) and has been identified as CVE-2023-27621.

Understanding CVE-2023-27621

This section delves into the details of the CVE-2023-27621 vulnerability, its impacts, technical description, affected systems, and mitigation measures.

What is CVE-2023-27621?

The CVE-2023-27621 vulnerability involves an Authenticated (admin+) Stored Cross-Site Scripting (XSS) issue found in the MrDemonWolf Livestream Notice plugin version 1.2.0 and earlier versions. This vulnerability could allow attackers to execute malicious scripts in the context of an admin user.

The Impact of CVE-2023-27621

The impact of CVE-2023-27621 is categorized under CAPEC-592 Stored XSS, with a CVSS v3.1 base score of 5.9 (Medium severity). The vulnerability requires high privileges to exploit, with user interaction being a necessary component for successful attacks.

Technical Details of CVE-2023-27621

This section provides insights into the technical aspects of CVE-2023-27621, including the vulnerability description, affected systems, versions, and exploitation mechanisms.

Vulnerability Description

The vulnerability stems from improper neutralization of input during webpage generation, leading to Cross-Site Scripting (XSS) threats. Attackers can exploit this flaw to inject and execute malicious scripts within the plugin.

Affected Systems and Versions

The MrDemonWolf Livestream Notice plugin version 1.2.0 and prior versions are vulnerable to this XSS flaw. Users utilizing versions equal to or below 1.2.0 are at risk of exploitation.

Exploitation Mechanism

The vulnerability can be exploited by authenticated attackers (admin+) to store and execute malicious scripts within the context of an admin user, potentially causing harm to the website and its visitors.

Mitigation and Prevention

To safeguard systems from the CVE-2023-27621 vulnerability, immediate actions should be taken to address the risk and prevent possible exploitation. Here are some key steps for mitigation:

Immediate Steps to Take

Users are advised to update the MrDemonWolf Livestream Notice plugin to version 1.3.0 or a higher version to mitigate the XSS vulnerability.

Long-Term Security Practices

Implement secure coding practices to prevent Cross-Site Scripting vulnerabilities in plugins and regularly monitor for security updates and patches.

Patching and Updates

Regularly apply software updates, security patches, and actively monitor for vulnerability disclosures to proactively safeguard against potential threats like CVE-2023-27621.