CVE-2021-36790 : What You Need to Know

This CVE-2021-36790 involves the dated_news (aka Dated News) extension through version 5.1.1 for TYPO3, which allows for XSS attacks.

Understanding CVE-2021-36790

This section will provide insights into the details and impact of CVE-2021-36790.

What is CVE-2021-36790?

The dated_news extension in TYPO3 up to version 5.1.1 is vulnerable to cross-site scripting (XSS) attacks, posing a security risk to users.

The Impact of CVE-2021-36790

The presence of this vulnerability allows attackers to execute malicious scripts in the context of a victim's web session, potentially leading to sensitive data theft or unauthorized actions.

Technical Details of CVE-2021-36790

Let's dive deeper into the technical aspects of CVE-2021-36790.

Vulnerability Description

The XSS vulnerability in the dated_news extension (Dated News) up to version 5.1.1 of TYPO3 enables threat actors to inject and execute arbitrary scripts on targeted web pages.

Affected Systems and Versions

All systems running TYPO3 with dated_news extension versions up to 5.1.1 are affected by this security flaw.

Exploitation Mechanism

Hackers can exploit this vulnerability by injecting malicious scripts through crafted URLs, forms, or any user input fields, thereby compromising the integrity of the web application.

Mitigation and Prevention

Discover the essential steps to address and prevent the CVE-2021-36790 vulnerability.

Immediate Steps to Take

It is recommended to update the dated_news extension to the latest patched version to mitigate the XSS risk. Additionally, web administrators should sanitize user input and implement Content Security Policy (CSP) headers to reduce the attack surface.

Long-Term Security Practices

In the long term, regular security audits, code reviews, and user input validation can help maintain a robust security posture against XSS vulnerabilities.

Patching and Updates

Stay informed about security advisories and updates from TYPO3 to swiftly apply patches and keep the system secure.