Tendat Router Credential Disclosure Scanner

Tendat routers are widely used by individuals and small to medium businesses for establishing and managing internet connectivity. They provide functionalities such as wireless access, firewall protection, and network management. These routers are often preferred due to their affordability and easy-to-use interface, making them suitable for non-technical users. Network administrators use Tendat routers to handle typical networking tasks like user authentication, bandwidth management, and device monitoring. They are installed in various settings, from homes to small offices, to ensure reliable internet access. The routers support remote management, allowing administrators to configure settings and update firmware from different locations.

Credential Disclosure is a security flaw that allows unauthorized users to access sensitive data, such as usernames and passwords, stored within a system. This vulnerability occurs when credentials are stored or transmitted in an unsecured manner, making them susceptible to interception. Exploiting this vulnerability can lead to unauthorized access to confidential resources, allowing attackers to perform malicious activities. It is critical to address such vulnerabilities to prevent potential data breaches and maintain the integrity of the system. Network devices like routers are common targets for these attacks as they often store sensitive login information required for network operation. The exposure of credentials can have far-reaching consequences, potentially compromising the entire network's security.

The technical basis of the credential disclosure vulnerability within Tendat Router pertains to improper handling of configuration data. An attacker can send specific requests to the '/cgi-bin/DownloadCfg/RouterCfm.jpg' endpoint, which inadvertently discloses sensitive configuration details. The response from this endpoint may contain critical information such as 'http_username' and 'device_remark'. Additionally, the HTTP headers might include paths referencing 'config/conf', indicating exposure of configuration files. The presence of the 'status_code == 200' further suggests successful retrieval of sensitive data, which should normally be secured. This flaw underscores a lack of adequate protective measures in place to secure sensitive information from unauthorized requests.

When credential disclosure vulnerabilities are exploited, potential consequences include unauthorized access to the affected network devices and data. Attackers can leverage exposed credentials to manipulate settings, extract sensitive data, or even install malicious software. This could lead to a breach where attackers establish persistent access to the network, intercept communications, and compromise additional connected devices. The impact can extend to unauthorized data modification or destruction, significantly affecting business operations. Moreover, affected organizations may face legal repercussions and loss of reputation. Ensuring strong security measures can help prevent the occurrence and exploitation of such vulnerabilities.

REFERENCES

• https://github.com/wy876/POC/blob/main/Tenda%E8%B7%AF%E7%94%B1%E5%99%A8%E8%B4%A6%E5%8F%B7%E5%AF%86%E7%A0%81%E6%B3%84%E9%9C%B2.md