CVE-2018-13317 Scanner

The TOTOLINK A3002RU is a Wi-Fi router commonly used in homes and small offices to provide internet connectivity. It is designed to offer high-speed internet access and reliable network performance for various devices, including computers, smartphones, and smart home gadgets. Network administrators and individuals seeking a robust and cost-effective internet solution frequently utilize this product. The router supports multiple operational modes, enabling it to serve as a gateway, access point, or repeater. It is typically managed via a web interface, allowing users to configure network settings, monitor usage, and secure the network. Its popularity is underscored by its ease of installation and management, catering to a diverse user base with varying technical expertise.

Information disclosure is a vulnerability that involves the exposure of sensitive data to unauthorized entities. In the context of the TOTOLINK A3002RU router, this vulnerability allows remote attackers to gain access to confidential information, such as the plaintext admin password, without authentication. This weakness is particularly critical as it can lead to unauthorized administrative access to the router. Such access can be exploited to alter network configurations, intercept user data, or launch further attacks on the connected network. Information disclosure vulnerabilities are prevalent in systems with inadequate access control or faulty configuration settings. Measures to mitigate this vulnerability usually involve strengthening authentication mechanisms and revising network policies to limit unauthorized access.

The vulnerability in TOTOLINK A3002RU firmware version 1.0.8 resides in the exposure of sensitive data via a specific HTTP endpoint. By sending a GET request to `/password.htm`, an unauthenticated attacker can retrieve the admin password in plaintext. The flaw is in the configuration of this endpoint, which inadequately restricts access to authorized users. Attackers can exploit this vulnerability remotely without needing to provide credentials, granting them administrative privileges over the device. This technical oversight is due to improper access control measures, underscoring the necessity for rigorous parameter validation and restricted interface exposure. It illustrates the critical need for manufacturers to routinely audit and update firmware to close these security gaps.

Exploiting this vulnerability can have several detrimental effects on the affected networks. Attackers gaining administrative access can change network settings, leading to network disruptions or denial of service. Sensitive user data transmitted over the network may be intercepted or manipulated, compromising the confidentiality and integrity of user communications. Additionally, the compromised device can serve as a foothold for attackers to launch further attacks on the internal network, expanding their illicit access and potential for data breaches. Organizations and individuals on such a compromised network can face financial losses, reputational damage, and legal liabilities.

REFERENCES

• https://blog.securityevaluators.com/new-vulnerabilities-in-totolink-a3002ru-d6f42a081154
• https://nvd.nist.gov/vuln/detail/CVE-2018-13317