CVE-2021-34207 : Vulnerability Insights and Analysis

CVE-2021-34207 is a vulnerability found in TOTOLINK A3002R version V1.1.1-B20200824, which allows attackers to execute arbitrary JavaScript through Cross-site scripting (XSS) by modifying specific fields. This vulnerability has potential security implications and requires immediate attention and mitigation.

Understanding CVE-2021-34207

This section provides insights into the nature of the CVE-2021-34207 vulnerability and its impact.

What is CVE-2021-34207?

CVE-2021-34207 is a Cross-site scripting (XSS) vulnerability identified in ddns.htm within TOTOLINK A3002R version V1.1.1-B20200824. It enables attackers to run malicious JavaScript code by altering certain input fields.

The Impact of CVE-2021-34207

The impact of this vulnerability is significant as it allows threat actors to execute arbitrary JavaScript within the context of the affected web application, potentially leading to sensitive data theft, account hijacking, or other malicious activities.

Technical Details of CVE-2021-34207

This section delves into the technical aspects and specifics of CVE-2021-34207.

Vulnerability Description

The vulnerability arises from inadequate input validation on the "Domain Name", "Server Address", "User Name/Email", and "Password/Key" fields in ddns.htm of TOTOLINK A3002R version V1.1.1-B20200824, facilitating XSS attacks.

Affected Systems and Versions

TOTOLINK A3002R version V1.1.1-B20200824 is specifically impacted by this vulnerability, potentially affecting users of this particular device version.

Exploitation Mechanism

Threat actors exploit CVE-2021-34207 by tampering with the mentioned fields in ddns.htm, injecting malicious JavaScript code that gets executed in users' browsers, enabling various attacks.

Mitigation and Prevention

This section outlines essential steps to mitigate the risks associated with CVE-2021-34207 and prevent potential exploitation.

Immediate Steps to Take

Users and administrators are advised to update to a patched version, if available, and refrain from inputting untrusted data into the vulnerable fields to mitigate the risk of XSS attacks.

Long-Term Security Practices

Incorporating robust input validation mechanisms, security testing, and staying informed about security patches and updates are crucial for long-term security resilience.

Patching and Updates

Regularly check for security updates and patches released by TOTOLINK for A3002R devices to address and remediate the CVE-2021-34207 vulnerability.