CVE-2021-27149 : Exploit Details and Defense Strategies

An issue was discovered on FiberHome HG6245D devices through RP2613 where the web daemon contains hardcoded credentials for an ISP. This vulnerability is identified with CVE-2021-27149.

Understanding CVE-2021-27149

This section will delve into the details of the CVE-2021-27149 vulnerability.

What is CVE-2021-27149?

The CVE-2021-27149 vulnerability pertains to FiberHome HG6245D devices running RP2613. It involves the presence of hardcoded credentials (adminpldt / z6dUABtl270qRxt7a2uGTiw) within the web daemon, potentially posing a security risk.

The Impact of CVE-2021-27149

The presence of hardcoded credentials in FiberHome HG6245D devices can allow unauthorized access to sensitive information or system control, potentially leading to unauthorized configuration changes or data breaches.

Technical Details of CVE-2021-27149

In this section, we will discuss the technical aspects of the CVE-2021-27149 vulnerability.

Vulnerability Description

The vulnerability arises due to hardcoded credentials (adminpldt / z6dUABtl270qRxt7a2uGTiw) embedded in the web daemon of FiberHome HG6245D devices running RP2613, making it susceptible to unauthorized access.

Affected Systems and Versions

FiberHome HG6245D devices through RP2613 are affected by this vulnerability due to the hardcoded credentials present in the web daemon.

Exploitation Mechanism

Attackers can exploit this vulnerability by leveraging the hardcoded credentials to gain unauthorized access to the web interface of the affected FiberHome HG6245D devices.

Mitigation and Prevention

This section focuses on the steps to mitigate and prevent the exploitation of CVE-2021-27149.

Immediate Steps to Take

Users and administrators should change the default credentials immediately to unique, strong passwords to prevent unauthorized access. It is also advised to restrict access to the affected devices.

Long-Term Security Practices

Regularly updating firmware, implementing access controls, and conducting security audits can help enhance the overall security posture and prevent similar vulnerabilities.

Patching and Updates

Vendors should release patches addressing the hardcoded credentials issue in FiberHome HG6245D devices to eliminate this security risk and enhance device security.