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CVE-2017-8329

Status: ModifiedMedium (6.4)—

An issue was discovered on Securifi Almond, Almond+, and Almond 2015 devices with firmware AL-R096. The device provides a user with the capability of setting a name for the wireless network. These values are stored by the device in NVRAM (Non-volatile RAM). It seems that the POST parameters passed in this request to set up names on the device do not have a string length check on them. This allows an attacker to send a large payload in the "mssid_1" POST parameter. The device also allows a user to view the name of the Wifi Network set by the user.

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While processing this request, the device calls a function at address 0x00412CE4 (routerSummary) in the binary "webServer" located in Almond folder, which retrieves the value set earlier by "mssid_1" parameter as SSID2 and this value then results in overflowing the stack set up for this function and allows an attacker to control $ra register value on the stack which allows an attacker to control the device by executing a payload of an attacker's choice. If the firmware version AL-R096 is dissected using binwalk tool, we obtain a cpio-root archive which contains the filesystem set up on the device that contains all the binaries. The binary "goahead" is the one that has the vulnerable function that receives the values sent by the POST request. If we open this binary in IDA-pro we will notice that this follows a MIPS little endian format. The function sub_00420F38 in IDA pro is identified to be receiving the values sent in the POST parameter "mssid_1" at address 0x0042BA00 and then sets in the NVRAM at address 0x0042C314. The value is later retrieved in the function at address 0x00412EAC and this results in overflowing the buffer as the function copies the value directly on the stack.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (3)

Securifi — Almond+firmwareSecurifi — Almond 2015 FirmwareSecurifi — Almond Firmware

CWEs

References

Raw JSON (NVD)

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      "value": "An issue was discovered on Securifi Almond, Almond+, and Almond 2015 devices with firmware AL-R096. The device provides a user with the capability of setting a name for the wireless network. These values are stored by the device in NVRAM (Non-volatile RAM). It seems that the POST parameters passed in this request to set up names on the device do not have a string length check on them. This allows an attacker to send a large payload in the \"mssid_1\" POST parameter. The device also allows a user to view the name of the Wifi Network set by the user. While processing this request, the device calls a function at address 0x00412CE4 (routerSummary) in the binary \"webServer\" located in Almond folder, which retrieves the value set earlier by \"mssid_1\" parameter as SSID2 and this value then results in overflowing the stack set up for this function and allows an attacker to control $ra register value on the stack which allows an attacker to control the device by executing a payload of an attacker's choice. If the firmware version AL-R096 is dissected using binwalk tool, we obtain a cpio-root archive which contains the filesystem set up on the device that contains all the binaries. The binary \"goahead\" is the one that has the vulnerable function that receives the values sent by the POST request. If we open this binary in IDA-pro we will notice that this follows a MIPS little endian format. The function sub_00420F38 in IDA pro is identified to be receiving the values sent in the POST parameter \"mssid_1\" at address 0x0042BA00 and then sets in the NVRAM at address 0x0042C314. The value is later retrieved in the function at address 0x00412EAC and this results in overflowing the buffer as the function copies the value directly on the stack."
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      "value": "Se descubrió un problema en los dispositivos Securifi Almond, Almond + y Almond 2015 con firmware AL-R096. El dispositivo proporciona a un usuario la capacidad de establecer un nombre para la red inalámbrica. Estos valores son almacenados por el dispositivo en NVRAM (RAM no volátil). Parece que los parámetros POST pasados en esta solicitud para configurar nombres en el dispositivo no tienen una verificación de longitud de cadena en ellos. Esto permite que un atacante envíe una gran carga útil en el parámetro POST \"mssid_1\". El dispositivo también permite que un usuario vea el nombre de la red Wifi configurada por el usuario. Mientras procesa esta solicitud, el dispositivo llama a una función en la dirección 0x00412CE4 (routerSummary) en el \"servidor web\" binario ubicado en la carpeta Almond, que recupera el valor establecido anteriormente por el parámetro \"mssid_1\" como SSID2 y este valor produce un desbordamiento del conjunto de pilas para esta función y permite que un atacante controle el valor de registro de $ra en la pila, lo que le permite controlar el dispositivo ejecutando una carga útil a elección del atacante. Si la versión de firmware AL-R096 se disecciona con la herramienta binwalk, obtenemos un archivo cpio-root que contiene el sistema de archivos configurado en el dispositivo que contiene todos los archivos binarios. El binario \"goahead\" es el que tiene la función vulnerable que recibe los valores enviados por la solicitud POST. Si abrimos este binario en IDA-pro, notaremos que esto sigue un formato MIPS little endian. La función sub_00420F38 en IDA pro está identificada para recibir los valores enviados en el parámetro POST \"mssid_1\" en la dirección 0x0042BA00 y luego se establece en la NVRAM en la dirección 0x0042C314. El valor se recupera posteriormente en la función en la dirección 0x00412EAC y esto provoca el desbordamiento del búfer a medida que la función copia el valor directamente en la pila."
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  "lastModified": "2026-06-17T01:26:11.240",
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