CVE-2025-43472 macOS本地提权漏洞：应用获取root权限

// CVE-2025-43472 PoC - macOS Local Privilege Escalation // Note: This is a conceptual PoC for educational purposes only // Actual exploitation requires specific vulnerable conditions #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <sys/stat.h> // Simulated vulnerable function - input validation bypass int vulnerable_input_check(const char* user_input) { // VULNERABLE: Insufficient input sanitization // Missing: boundary checks, privilege verification, path canonicalization if (user_input == NULL) { return -1; } // Simple check without proper validation if (strlen(user_input) < 1024) { return 0; // Passes check without proper validation } return -1; } // Simulated privilege escalation trigger int trigger_privilege_escalation(const char* input) { int result = vulnerable_input_check(input); if (result == 0) { // VULNERABLE: Should verify caller privileges before granting elevated access // Missing: setuid check, capability verification, sandbox inspection printf("[*] Attempting privileged operation...\n"); // Simulate gaining root privileges through validation bypass if (geteuid() != 0) { printf("[+] Privilege escalation condition met\n"); // In real exploit: system call to gain root return 1; } } return 0; } int main(int argc, char* argv[]) { printf("CVE-2025-43472 PoC - macOS Input Validation Privilege Escalation\n"); printf("Current UID: %d, EUID: %d\n", getuid(), geteuid()); if (argc > 1) { printf("[*] Triggering vulnerable code path...\n"); int result = trigger_privilege_escalation(argv[1]); if (result == 1) { printf("[+] Exploitation conditions satisfied\n"); printf("[!] In real scenario: root shell would be obtained\n"); } } else { printf("Usage: %s <malicious_input>\n", argv[0]); } return 0; } // Mitigation: // 1. Apply macOS security updates (Sequoia 15.7.2, Sonoma 14.8.2, Tahoe 26.1) // 2. Implement proper input sanitization and validation // 3. Use setuid() verification before privileged operations // 4. Enable System Integrity Protection (SIP)