CVE-2021-34220 : What You Need to Know

A detailed overview of CVE-2021-34220 highlighting the impact, technical details, and mitigation strategies.

Understanding CVE-2021-34220

CVE-2021-34220 is a vulnerability found in TOTOLINK A3002R version V1.1.1-B20200824, allowing attackers to execute arbitrary JavaScript through Cross-site scripting in tr069config.htm.

What is CVE-2021-34220?

The CVE-2021-34220 vulnerability in TOTOLINK A3002R version V1.1.1-B20200824 enables threat actors to run malicious JavaScript by tampering with the "User Name" or "Password" fields.

The Impact of CVE-2021-34220

This vulnerability poses a serious security risk as it allows attackers to execute arbitrary code on affected systems, potentially leading to unauthorized access or data theft.

Technical Details of CVE-2021-34220

The following section delves into the specifics of the vulnerability, including its description, affected systems, versions, and exploitation mechanisms.

Vulnerability Description

Cross-site scripting in tr069config.htm in TOTOLINK A3002R version V1.1.1-B20200824 permits threat actors to launch arbitrary JavaScript by manipulating user input fields.

Affected Systems and Versions

The vulnerability impacts TOTOLINK A3002R version V1.1.1-B20200824.

Exploitation Mechanism

Attackers can exploit this vulnerability by altering the content of the "User Name" or "Password" fields to inject and execute malicious JavaScript code.

Mitigation and Prevention

In this section, we discuss immediate steps to take, long-term security practices, and the significance of timely patching and updates for CVE-2021-34220.

Immediate Steps to Take

Users and organizations are advised to restrict access to the vulnerable tr069config.htm page, validate user inputs, and sanitize data to prevent malicious script execution.

Long-Term Security Practices

Implement strict input validation mechanisms, conduct regular security assessments, and educate users about safe browsing habits to mitigate the risk of XSS vulnerabilities.

Patching and Updates

Vendor-supplied patches and software updates should be promptly applied to address the CVE-2021-34220 vulnerability and enhance overall system security.