CVE-2021-4020 : What You Need to Know
Learn about CVE-2021-4020, a Cross-site Scripting vulnerability in janus-gateway that allows attackers to execute malicious scripts. Understand the impact, affected systems, and mitigation steps.
This article provides details about CVE-2021-4020, a vulnerability in janus-gateway that allows for Cross-site Scripting (XSS) attacks.
Understanding CVE-2021-4020
This section will cover what CVE-2021-4020 entails and its impact.
What is CVE-2021-4020?
CVE-2021-4020 refers to a Cross-site Scripting vulnerability in janus-gateway, allowing attackers to execute malicious scripts on web pages.
The Impact of CVE-2021-4020
The impact of this vulnerability is rated as HIGH due to its potential to compromise the confidentiality, integrity, and availability of affected systems.
Technical Details of CVE-2021-4020
In this section, we will delve into the technical aspects of CVE-2021-4020.
Vulnerability Description
The vulnerability in janus-gateway results from improper neutralization of input during web page generation, enabling stored Cross-site Scripting attacks.
Affected Systems and Versions
The vulnerability affects meetecho/janus-gateway versions less than 0.11.6, with a custom version type being unspecified.
Exploitation Mechanism
Exploiting this vulnerability requires low attack complexity and network access, with high impacts on confidentiality, integrity, and availability, as per CVSS v3.0 metrics.
Mitigation and Prevention
This section outlines steps to mitigate and prevent exploitation of CVE-2021-4020.
Immediate Steps to Take
Users are advised to update janus-gateway to version 0.11.6 or above to eliminate the Cross-site Scripting vulnerability.
Long-Term Security Practices
Implementing secure coding practices and regular security assessments can enhance overall application security.
Patching and Updates
Regularly monitoring for software updates and promptly applying patches is crucial to addressing known vulnerabilities.