CVE-2024-22213 : Security Advisory and Response

This CVE involves a Cross-site Scripting vulnerability in the Nextcloud Deck app, impacting certain versions.

Understanding CVE-2024-22213

This vulnerability, assigned by GitHub_M, allows malicious actors to execute code in users' browsers by sending HTML code as a comment in the Nextcloud Deck app.

What is CVE-2024-22213?

The vulnerability allows for the execution of malicious code in users' browsers by leveraging HTML code within comments in the Nextcloud Deck app.

The Impact of CVE-2024-22213

If exploited, this vulnerability could lead to unauthorized code execution in users' browsers through HTML comments, potentially compromising user data and system integrity.

Technical Details of CVE-2024-22213

The following technical details outline the vulnerability in the Nextcloud Deck app:

Vulnerability Description

The vulnerability arises from improper neutralization of input during web page generation, specifically through Cross-site Scripting within HTML comments.

Affected Systems and Versions

The affected versions of the Nextcloud Deck app include versions 1.9.0 to 1.9.5, and versions 1.10.0 to 1.11.2. Users using these versions are susceptible to the Cross-site Scripting vulnerability.

Exploitation Mechanism

Exploitation of this vulnerability involves sending HTML as a comment within the Nextcloud Deck app, allowing attackers to execute malicious code in users' browsers.

Mitigation and Prevention

To mitigate the risks associated with CVE-2024-22213, the following steps are recommended:

Immediate Steps to Take

Users are advised to upgrade the Nextcloud Deck app to version 1.9.5 or 1.11.2 to patch the vulnerability and prevent malicious code execution through HTML comments.

Long-Term Security Practices

Practicing secure coding, input validation, and regular security audits can help prevent Cross-site Scripting vulnerabilities like CVE-2024-22213 in web applications.

Patching and Updates

Staying updated with security advisories and promptly applying patches released by software providers can effectively protect against known vulnerabilities like the one identified in the Nextcloud Deck app.