CVE-2021-27159 : Exploit Details and Defense Strategies

An issue was discovered on FiberHome HG6245D devices through RP2613 where the web daemon contains hardcoded useradmin / 888888 credentials for an ISP.

Understanding CVE-2021-27159

This CVE identifies a vulnerability in FiberHome HG6245D devices that exposes hardcoded credentials for the useradmin account.

What is CVE-2021-27159?

CVE-2021-27159 reveals a security flaw in FiberHome HG6245D routers, allowing unauthorized access via preset login credentials.

The Impact of CVE-2021-27159

The presence of hardcoded credentials poses a serious security risk, enabling malicious actors to gain unauthorized access to the devices and potentially compromise the network.

Technical Details of CVE-2021-27159

This section outlines the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The issue involves the web daemon of FiberHome HG6245D devices exposing the hardcoded credentials 'useradmin / 888888' for an ISP account.

Affected Systems and Versions

All FiberHome HG6245D devices through RP2613 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by using the hardcoded credentials to gain unauthorized access to the web interface of the affected routers.

Mitigation and Prevention

Learn how to address and prevent the CVE-2021-27159 vulnerability through immediate steps and long-term security practices.

Immediate Steps to Take

Users are advised to change the default useradmin credentials to unique, secure passwords to mitigate the risk of unauthorized access.

Long-Term Security Practices

Implement robust password management policies, regularly update firmware, and monitor network activity to enhance overall cybersecurity.

Patching and Updates

Ensure timely installation of security patches released by FiberHome to fix the hardcoded credentials issue and enhance device security.