CVE-2020-24553 : Security Advisory and Response

Go before 1.14.8 and 1.15.x before 1.15.1 allows XSS due to default text/html for CGI/FCGI handlers without a Content-Type header.

Understanding CVE-2020-24553

This CVE involves a cross-site scripting (XSS) vulnerability in Go versions prior to 1.14.8 and 1.15.x before 1.15.1.

What is CVE-2020-24553?

This vulnerability arises from the default behavior of CGI/FCGI handlers in Go that lack a Content-Type header, enabling XSS attacks.

The Impact of CVE-2020-24553

The XSS vulnerability in affected Go versions can be exploited by attackers to execute malicious scripts on the client-side, potentially compromising user data and system integrity.

Technical Details of CVE-2020-24553

Go through the technical aspects of this vulnerability.

Vulnerability Description

The issue in Go versions allows XSS attacks as text/html is set as the default for CGI/FCGI handlers without a Content-Type header.

Affected Systems and Versions

Go versions before 1.14.8
Go 1.15.x versions before 1.15.1

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into web applications that utilize CGI/FCGI handlers without specifying a Content-Type header.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2020-24553.

Immediate Steps to Take

Update Go to version 1.14.8 or 1.15.1 to patch the vulnerability.
Ensure all CGI/FCGI handlers specify a Content-Type header to prevent XSS attacks.

Long-Term Security Practices

Regularly monitor and update software dependencies to address security vulnerabilities promptly.
Implement secure coding practices to mitigate XSS and other common web application vulnerabilities.

Patching and Updates

Stay informed about security advisories and updates from Go to apply patches promptly.