CVE-2021-33570 : What You Need to Know

Postbird 0.8.4 is affected by a stored Cross-Site Scripting (XSS) vulnerability that allows malicious actors to execute scripts in users' web browsers. This vulnerability can be exploited via the onerror attribute of an IMG element in any PostgreSQL database table. The impact includes reading local files and discovering PostgreSQL passwords through different vectors.

Understanding CVE-2021-33570

This section delves into the details of the CVE-2021-33570 vulnerability in Postbird 0.8.4.

What is CVE-2021-33570?

Postbird 0.8.4 vulnerability allows stored XSS through the onerror attribute of an IMG element in PostgreSQL tables, enabling attackers to execute scripts in a user's browser.

The Impact of CVE-2021-33570

The impact includes the ability to read local files and access PostgreSQL passwords via specific vectors like XMLHttpRequest and Window.localStorage.

Technical Details of CVE-2021-33570

Explore the technical aspects of the CVE-2021-33570 vulnerability in Postbird 0.8.4.

Vulnerability Description

Postbird 0.8.4 is susceptible to stored XSS, allowing threat actors to inject malicious scripts via the onerror attribute of an IMG element.

Affected Systems and Versions

All versions of Postbird 0.8.4 are impacted by this vulnerability.

Exploitation Mechanism

The vulnerability can be exploited by leveraging vectors involving XMLHttpRequest, Window.localStorage, and savedConnections.

Mitigation and Prevention

Discover the steps to mitigate the risks associated with CVE-2021-33570 in Postbird 0.8.4.

Immediate Steps to Take

Users are advised to update Postbird to the latest version and avoid interacting with untrusted PostgreSQL database tables.

Long-Term Security Practices

Implement secure coding practices and conduct regular security audits to prevent XSS vulnerabilities.

Patching and Updates

Stay vigilant for security advisories and promptly apply patches to secure your systems from potential exploits.