CVE-2021-34228 : Security Advisory and Response

Cross-site scripting vulnerability in TOTOLINK A3002R version V1.1.1-B20200824 allows attackers to run arbitrary JavaScript by manipulating specific fields.

Understanding CVE-2021-34228

This CVE pertains to a cross-site scripting flaw in the TOTOLINK A3002R router, enabling attackers to execute malicious scripts.

What is CVE-2021-34228?

The CVE-2021-34228 vulnerability involves an issue in the parent_control.htm page of TOTOLINK A3002R V1.1.1-B20200824, permitting cybercriminals to inject and run arbitrary JavaScript code by altering certain fields within the router interface.

The Impact of CVE-2021-34228

Exploitation of this vulnerability could lead to unauthorized execution of JavaScript code, potentially compromising the security and privacy of users' network devices and data.

Technical Details of CVE-2021-34228

This section provides further insight into the vulnerability affecting TOTOLINK A3002R.

Vulnerability Description

The vulnerability arises due to improper input validation in the parent_control.htm page, allowing threat actors to insert malicious JavaScript via the "Description" and "Service Name" fields.

Affected Systems and Versions

TOTOLINK A3002R routers running version V1.1.1-B20200824 are impacted by this vulnerability, exposing them to the risk of cross-site scripting attacks.

Exploitation Mechanism

Attackers can exploit CVE-2021-34228 by modifying the contents of the "Description" and "Service Name" fields on the parent_control.htm webpage, thereby executing arbitrary JavaScript code.

Mitigation and Prevention

To safeguard systems against CVE-2021-34228, immediate actions and long-term security measures are crucial.

Immediate Steps to Take

Users should avoid accessing untrusted websites and ensure that router firmware is up to date. Implementing strong, unique passwords can also mitigate risks.

Long-Term Security Practices

Regularly monitor for security updates from TOTOLINK and apply patches promptly. Employ network security tools and practices to enhance overall system security.

Patching and Updates

It is essential to apply security patches and updates released by TOTOLINK to address CVE-2021-34228 and other potential vulnerabilities, ensuring the robustness of network defenses.