CVE-2023-35783 : Security Advisory and Response

This article provides an overview of CVE-2023-35783, a vulnerability in the ke_search extension for TYPO3 that allows XSS attacks via indexed data.

Understanding CVE-2023-35783

In this section, we will explore the details of the CVE-2023-35783 vulnerability.

What is CVE-2023-35783?

The ke_search extension before versions 4.0.3, 4.1.x through 4.6.x before 4.6.6, and 5.x before 5.0.2 for TYPO3 are affected by this vulnerability, allowing for XSS attacks through indexed data.

The Impact of CVE-2023-35783

As a result of this vulnerability, attackers can exploit the XSS issue to execute malicious scripts in the context of a victim's browser, potentially leading to unauthorized access or data theft.

Technical Details of CVE-2023-35783

This section delves into the technical specifics of CVE-2023-35783.

Vulnerability Description

The issue arises from improper input validation in the ke_search extension, enabling attackers to inject and execute malicious scripts through indexed data.

Affected Systems and Versions

All versions of ke_search extension before 4.0.3, 4.1.x through 4.6.x before 4.6.6, and 5.x before 5.0.2 for TYPO3 are susceptible to this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious scripts and injecting them into the indexed data of the affected ke_search extension, thereby initiating XSS attacks.

Mitigation and Prevention

In this section, we discuss mitigation strategies and preventive measures for CVE-2023-35783.

Immediate Steps to Take

Update the ke_search extension to versions 4.0.3, 4.1.x through 4.6.x to 4.6.6, or 5.x to 5.0.2, which contain fixes for the XSS vulnerability.
Regularly monitor and review indexed data to detect any malicious payloads.

Long-Term Security Practices

Implement strict input validation and sanitization practices to prevent XSS attacks.
Educate developers and administrators about secure coding practices and the risks associated with improper data handling.

Patching and Updates

Stay informed about security advisories and updates released by TYPO3 and promptly apply patches to address known vulnerabilities.