CVE-2021-30071 Explained : Impact and Mitigation

A cross-site scripting (XSS) vulnerability in HestiaCP before v1.3.5 allows attackers to execute arbitrary web scripts or HTML via a crafted payload.

Understanding CVE-2021-30071

This CVE details a security vulnerability in HestiaCP that can lead to cross-site scripting attacks.

What is CVE-2021-30071?

CVE-2021-30071 is a cross-site scripting (XSS) vulnerability found in /admin/list_key.html of HestiaCP before v1.3.5. It permits malicious actors to execute arbitrary web scripts or HTML by injecting a carefully crafted payload.

The Impact of CVE-2021-30071

Exploitation of this vulnerability can result in unauthorized execution of scripts or HTML code within the context of the affected browser, potentially leading to account hijacking, data theft, or other malicious activities.

Technical Details of CVE-2021-30071

This section will cover the specific technical aspects of the CVE.

Vulnerability Description

The vulnerability allows attackers to insert malicious scripts or HTML code through the affected /admin/list_key.html endpoint, which is not adequately sanitized by the application.

Affected Systems and Versions

HestiaCP versions prior to v1.3.5 are impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a specially crafted payload to the vulnerable /admin/list_key.html endpoint, triggering the execution of unauthorized scripts or HTML.

Mitigation and Prevention

To safeguard systems from the risks associated with CVE-2021-30071, proactive security measures need to be implemented.

Immediate Steps to Take

Users are advised to update their HestiaCP installations to version 1.3.5 or newer to mitigate the risk of exploitation.

Long-Term Security Practices

Regular security assessments, code reviews, and security awareness training can help prevent similar vulnerabilities in the future.

Patching and Updates

Stay vigilant for security updates and patches released by HestiaCP to address vulnerabilities and enhance the security posture of your systems.