CVE-2021-46875 : What You Need to Know

This CVE refers to an XSS vulnerability found in eZ Platform Ibexa Kernel before version 1.3.1.1, allowing the upload of malicious JavaScript code in .html or .js files.

Understanding CVE-2021-46875

An in-depth look at the impact and technical details of the vulnerability.

What is CVE-2021-46875?

CVE-2021-46875 is a security flaw in eZ Platform Ibexa Kernel, enabling a potential cross-site scripting (XSS) attack through the uploading of JavaScript code in specific file types.

The Impact of CVE-2021-46875

Allows attackers to inject malicious JavaScript code into .html or .js files
Can lead to unauthorized access, data theft, and other forms of cyber attacks

Technical Details of CVE-2021-46875

A closer examination of the vulnerability specifics.

Vulnerability Description

The issue arises from a lack of input validation in eZ Platform Ibexa Kernel, permitting the upload and execution of JavaScript code.

Affected Systems and Versions

Vendor: Not applicable
Product: Not applicable
Version: Not applicable (all versions affected)

Exploitation Mechanism

Attackers exploit the vulnerability by uploading JavaScript code in files with the .html or .js extension, which is then executed when accessed by unsuspecting users.

Mitigation and Prevention

Best practices to address and mitigate the CVE-2021-46875 vulnerability.

Immediate Steps to Take

Update to the latest version (1.3.1.1) of eZ Platform Ibexa Kernel
Avoid uploading untrusted .html or .js files
Implement Content Security Policy (CSP) to restrict code execution

Long-Term Security Practices

Regularly scan and monitor for malicious file uploads
Conduct security training for developers on secure coding practices

Patching and Updates

Stay informed about security advisories and patches from eZ Systems
Apply all security updates promptly to prevent exploitation of known vulnerabilities.