CVE-2021-3646 Explained : Impact and Mitigation

A detailed overview of CVE-2021-3646, a vulnerability in btcpayserver/btcpayserver leading to Cross-site Scripting (XSS).

Understanding CVE-2021-3646

This section delves into the nature and implications of the CVE-2021-3646 vulnerability.

What is CVE-2021-3646?

The vulnerability in btcpayserver/btcpayserver allows for 'Cross-site Scripting' due to improper neutralization of input during web page generation.

The Impact of CVE-2021-3646

The impact of this vulnerability is rated as MEDIUM with a CVSS base score of 4.9. It has low confidentiality, integrity, and availability impacts.

Technical Details of CVE-2021-3646

Explore the technical aspects of the CVE-2021-3646 vulnerability.

Vulnerability Description

btcpayserver/btcpayserver is vulnerable to 'Cross-site Scripting' due to improper handling of input during web page generation leading to XSS attacks.

Affected Systems and Versions

The vulnerability affects versions of btcpayserver/btcpayserver prior to version 1.2.3.

Exploitation Mechanism

The vulnerability can be exploited by an attacker to inject malicious scripts into web pages viewed by other users, leading to potential data theft or unauthorized actions.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2021-3646 and prevent potential exploitation.

Immediate Steps to Take

Users are advised to update btcpayserver/btcpayserver to version 1.2.3 or newer to mitigate the vulnerability. Additionally, input validation and output encoding can help prevent XSS attacks.

Long-Term Security Practices

Implementing regular security audits, ensuring secure coding practices, and educating developers on XSS vulnerabilities are essential for long-term security.

Patching and Updates

Stay informed about security updates and patches released by btcpayserver to address vulnerabilities and improve system security.