Shenzhen Tenda Technology Co., Ltd. Tenda AC7 vulnerabilities

Shenzhen Tenda AC7 firmware version V03.03.03.01_cn and prior expose account credentials in plaintext within HTTP responses, allowing an on-path attacker to obtain sensitive authentication material.

Shenzhen Tenda AC7 firmware version V03.03.03.01_cn and prior does not implement CSRF protections for administrative functions in the web management interface. The interface does not enforce anti-CSRF tokens or robust origin validation, which can allow an attacker to induce a logged-in administrator to perform unintended state-changing requests and modify router settings.

Shenzhen Tenda AC7 firmware version V03.03.03.01_cn and prior expose sensitive information in web management responses. Administrative credentials, including the router and/or admin panel password, are included in plaintext within configuration response bodies. In addition, responses lack appropriate Cache-Control directives, which may permit web browsers to cache pages containing these credentials and enable subsequent disclosure to an attacker with access to the client system or browser profile.

Shenzhen Tenda AC7 firmware version V03.03.03.01_cn and prior contain an improper output encoding vulnerability in the web management interface. User-supplied input is reflected in HTTP responses without adequate escaping, allowing injection of arbitrary HTML or JavaScript in a victim’s browser context.