CVE-2023-46857 : Vulnerability Insights and Analysis

Squidex before 7.9.0 allows XSS via an SVG document to the Upload Assets feature. This occurs because there is an incomplete blacklist in the SVG inspection, allowing JavaScript in the SRC attribute of an IFRAME element. An authenticated attack with assets.create permission is required for exploitation.

Understanding CVE-2023-46857

A vulnerability in Squidex before 7.9.0 that enables XSS attacks through an SVG document upload feature.

What is CVE-2023-46857?

CVE-2023-46857 is a cross-site scripting (XSS) vulnerability in Squidex versions prior to 7.9.0, allowing malicious actors to inject and execute arbitrary scripts through SVG documents in the Upload Assets feature.

The Impact of CVE-2023-46857

The vulnerability can be exploited by authenticated users with assets.create permission, leading to potential unauthorized access, data theft, and other security risks within affected systems.

Technical Details of CVE-2023-46857

Details on the vulnerability, affected systems, and exploitation mechanisms.

Vulnerability Description

Squidex before 7.9.0 lacks proper SVG inspection, enabling the insertion of JavaScript code within the SRC attribute of an IFRAME element, leading to XSS attacks.

Affected Systems and Versions

All versions of Squidex prior to 7.9.0 are affected by CVE-2023-46857.

Exploitation Mechanism

An attacker needs to be authenticated with assets.create permission to exploit the vulnerability.

Mitigation and Prevention

Measures to mitigate the impact of CVE-2023-46857 and prevent exploitation.

Immediate Steps to Take

Ensure Squidex is updated to version 7.9.0 or newer to patch the vulnerability. Review user permissions to restrict access where necessary.

Long-Term Security Practices

Regularly update software and implement secure coding practices to prevent XSS and other vulnerabilities.

Patching and Updates

Stay informed about security patches and updates for Squidex to address known vulnerabilities promptly.