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CVE-2021-35393

Description

Realtek Jungle SDK version v2.x up to v3.4.14B provides a 'WiFi Simple Config' server that implements both UPnP and SSDP protocols. The binary is usually named wscd or mini_upnpd and is the successor to miniigd. The server is vulnerable to a stack buffer overflow vulnerability that is present due to unsafe parsing of the UPnP SUBSCRIBE/UNSUBSCRIBE Callback header. Successful exploitation of this vulnerability allows remote unauthenticated attackers to gain arbitrary code execution on the affected device.

POC

Reference

- https://www.iot-inspector.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain

Github

- https://github.com/20142995/nuclei-templates

- https://github.com/cyb3r-w0lf/nuclei-template-collection