3COM NJ2000 Default Login Scanner

3COM NJ2000 is a network jack device utilized by IT professionals and organizations primarily for Ethernet connectivity solutions. It is employed in offices, schools, and various institutions to convert standard electrical outlets into Ethernet jacks, facilitating seamless network connections. This device simplifies network architecture by integrating switching technology directly into wall outlets. The NJ2000 is advantageous for settings requiring numerous devices to connect to a central network infrastructure without extensive wiring. By eliminating the need for additional network switches, it offers cost and space efficiency. Its application can be found in both new constructions and retrofitting older buildings with modern networking capabilities.

The default login vulnerability in systems like 3COM NJ2000 arises when manufacturers implement pre-set credentials that are not changed post-installation. This vulnerability allows unauthorized individuals to gain administrative access with ease, typically using credentials like 'admin' and 'password.' As seen in 3COM NJ2000, access privileges may permit attackers to view sensitive data, manipulate configurations, or disrupt network operations. Default credentials are often documented and easily discoverable, posing substantial security risks. Despite warnings, many devices remain exposed until these credentials are modified by administrators. Addressing this vulnerability is crucial to maintaining secure network environments.

Technically, this vulnerability makes use of publicly available credentials to gain unauthorized access to the system. The vulnerable endpoint here is the login.html interface which accepts POST requests containing login data. If the request contains the default login password 'password,' the server grants administrative access without any additional verification. The actual parameters involved are typical login parameters including 'username' and 'password' embedded in a POST request. Successfully exploiting this allows attackers to gain full control over the device's configuration settings. Indicators of such exploitation can be found in logs showcasing default parameter usage.

If exploited, malicious entities gaining unauthorized access can lead to exposure of sensitive organizational information and crucial configuration settings. Intruders could potentially institute a denial of service by disrupting or rerouting network traffic. This access also translates to a higher risk of local network threats, including malware infiltration or data exfiltration. Unchecked configuration changes can result in incompatibility and network inefficiencies affecting the organization’s day-to-day operations. In severe cases, this can lead to reputational damage and significant data loss. Hence, it emphasizes the critical need to secure networked devices against unauthorized access.

REFERENCES

• https://www.manualslib.com/manual/204158/3com-Intellijack-Nj2000.html?page=12