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 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 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.
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.
A vulnerability, which was classified as critical, was found in Tenda AC7 up to 15.03.06.44. This affects the function formSetFirewallCfg of the file /goform/SetFirewallCfg. The manipulation of the argument firewallEn leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.
Tenda F1202 V1.0BR_V1.2.0.20(408), FH1202_V1.2.0.19_EN were discovered to contain a stack overflow in the page parameter in the function fromRouteStatic.
Tenda F1202 V1.0BR_V1.2.0.20(408) and FH1202_V1.2.0.19_EN, AC10 V1.0, AC1206 V1.0, AC7 V1.0, AC5 V1.0, and AC9 V3.0 were discovered to contain a stack overflow in the page parameter in the function fromNatStaticSetting.
Tenda F1202 V1.0BR_V1.2.0.20(408) and FH1202_V1.2.0.19_EN, AC10 V1.0, AC1206 V1.0, AC7 V1.0, AC5 V1.0, and AC9 V3.0 were discovered to contain a stack overflow in the page parameter in the function fromDhcpListClient.
An issue was discovered on Tenda AC7 devices with firmware through V15.03.06.44_CN(AC7), AC9 devices with firmware through V15.03.05.19(6318)_CN(AC9), and AC10 devices with firmware through V15.03.06.23_CN(AC10). A buffer overflow vulnerability exists in the router's web server (httpd). When processing the page parameters for a post request, the value is directly written with sprintf to a local variable placed on the stack, which overrides the return address of the function, a causing buffer overflow.
An issue was discovered on Tenda AC7 devices with firmware through V15.03.06.44_CN(AC7), AC9 devices with firmware through V15.03.05.19(6318)_CN(AC9), and AC10 devices with firmware through V15.03.06.23_CN(AC10). A buffer overflow vulnerability exists in the router's web server (httpd). When processing the list parameters for a post request, the value is directly written with sprintf to a local variable placed on the stack, which overrides the return address of the function, causing a buffer overflow.