CVE-2021-28150 : What You Need to Know

This article provides an overview of CVE-2021-28150, detailing the vulnerability found in Hongdian H8922 3.0.5 devices that allows unprivileged users to access sensitive data.

Understanding CVE-2021-28150

In this section, we will explore the impact, technical details, and mitigation strategies related to CVE-2021-28150.

What is CVE-2021-28150?

CVE-2021-28150 pertains to Hongdian H8922 3.0.5 devices, enabling unprivileged guest users to view cli.conf containing critical information like the administrator password via /backup2.cgi.

The Impact of CVE-2021-28150

The vulnerability poses a significant security risk as unauthorized users can access sensitive data, potentially leading to unauthorized system access and misuse of confidential information.

Technical Details of CVE-2021-28150

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

Vulnerability Description

Hongdian H8922 3.0.5 devices are susceptible to unauthorized access by unprivileged guest users, compromising the security of critical data stored in cli.conf.

Affected Systems and Versions

The vulnerability affects Hongdian H8922 devices running version 3.0.5, exposing them to the risk of unauthorized data exposure and potential exploitation.

Exploitation Mechanism

By leveraging the /backup2.cgi endpoint, unprivileged users can read the cli.conf file, which contains the administrator password and other sensitive data, leading to a breach of confidentiality.

Mitigation and Prevention

This section outlines immediate steps to mitigate the impact of CVE-2021-28150 and best practices for enhancing long-term security.

Immediate Steps to Take

Users are advised to restrict access to the vulnerable endpoint, monitor for unauthorized activity, and promptly apply security patches or updates to remediate the vulnerability.

Long-Term Security Practices

Implementing robust access controls, conducting regular security audits, and educating users on cybersecurity best practices can help prevent similar vulnerabilities in the future.

Patching and Updates

Stay informed about security advisories from the vendor, apply patches promptly, and ensure that systems are up-to-date to minimize the risk of exploitation.