Dlink Dir-850L Information Disclosure Scanner

The Dlink Dir-850L is a wireless router commonly used in both home and small office environments to provide internet connectivity and network management. Manufactured by D-Link, this device features dual-band wireless capabilities, multiple input and output antennas, and advanced security protocols, offering enhanced performance for reliable internet access. It's typically used by consumers and businesses that require dependable Wi-Fi connectivity for various devices such as computers, smartphones, and tablets. The router is designed to be user-friendly, allowing individuals with minimal technical expertise to set up and secure their network. Many users opt for the Dlink Dir-850L due to its balance of performance, affordability, and security features. It supports remote management and cloud functionality, enabling users to manage their networks from various locations.

The Information Disclosure vulnerability allows unauthorized access to configuration files or sensitive information in the device. Such vulnerabilities can result from improper handling of files or incorrect settings in the system that exposes sensitive data. Attackers can exploit this flaw to gain access to administration credentials and other confidential information. Disclosing sensitive data can lead to further exploitation if malicious entities use it to penetrate deeper into the network. Typically, this vulnerability is part of a broader class of security misconfigurations that can compromise the confidentiality of network settings. Efficient detection and mitigation of such vulnerabilities are critical in ensuring the overall security of affected devices.

The technical details of the vulnerability involve an insecure endpoint that processes XML requests. The vulnerable point is the "hedwig.cgi" path, where crafted XML data can retrieve sensitive information from configuration files. Specifically, the parameters in the XML body target the service that manages device account settings. The vulnerability is confirmed through the presence of user IDs and passwords in the response, indicating that configuration data is exposed. Proper validation of the POST requests and securing access to configuration files can prevent unauthorized data disclosures. The vulnerability emphasizes the need for stringent data handling in IoT devices like routers.

When this information disclosure vulnerability is exploited, it can lead to unauthorized control over network configurations. Attackers gaining access to administrative credentials could modify network settings, compromising the integrity and availability of network services. Moreover, exposed user credentials might lead to further intrusions into connected devices, risking data theft or loss of privacy. Organizations or individuals relying on secure network communication can experience service disruptions and potential financial or reputational damages. Addressing such vulnerabilities helps in maintaining trust in internet-connected devices and protects sensitive information from malicious actors.

REFERENCES

• https://xz.aliyun.com/t/2941