CVE-2025-9612: PCIe IDE规范TLP排序与标签唯一性不足导致数据完整性绕过

// CVE-2025-9612 PoC - PCIe IDE TLP Replay Attack Simulation // Note: This is a conceptual PoC for educational purposes only // Actual exploitation requires physical access to PCIe bus #include <stdio.h> #include <stdlib.h> #include <string.h> // Simulated PCIe TLP structure typedef struct { unsigned int tag; // TLP Tag field unsigned int seq_num; // Sequence number (if present) unsigned char data[64]; // TLP payload unsigned int length; // Data length unsigned int encrypted; // Encryption flag } PCIe_TLP; // Simulated IDE encryption context typedef struct { unsigned int session_key; unsigned int iv_counter; } IDE_Context; // Capture encrypted TLP (requires PCIe bus access) void capture_encrypted_tlp(PCIe_TLP *tlp, IDE_Context *ctx) { // In real attack: Use PCIe analyzer or malicious endpoint device // to intercept encrypted TLPs from the bus printf("[ATTACK] Capturing encrypted TLP with tag: %d\n", tlp->tag); printf("[ATTACK] Current IV counter: %d\n", ctx->iv_counter); } // Replay captured TLP without proper validation int replay_tlp(PCIe_TLP *original, IDE_Context *ctx) { // Vulnerability: Tag uniqueness not enforced, IV replay not detected if (original->tag == 0) { // Simulated check - fails in vulnerable impl printf("[VULN] Replay detected! Tag reuse: %d\n", original->tag); return 0; // Attack blocked } // Vulnerable implementation allows replay printf("[VULN] TLP replayed successfully (tag: %d)\n", original->tag); printf("[VULN] Data integrity violated - no detection!\n"); return 1; // Attack succeeded } // Reorder attack simulation int reorder_tlp_attack(PCIe_TLP *tlp1, PCIe_TLP *tlp2) { printf("[ATTACK] Reordering TLPs...\n"); printf("[ATTACK] Original order: TLP%d -> TLP%d\n", tlp1->tag, tlp2->tag); printf("[ATTACK] Reordered to: TLP%d -> TLP%d\n", tlp2->tag, tlp1->tag); // Vulnerability: No sequence number validation printf("[VULN] Reordering not detected - integrity check bypassed!\n"); return 1; } int main() { IDE_Context ctx = {.session_key = 0xDEADBEEF, .iv_counter = 100}; PCIe_TLP tlp1 = {.tag = 5, .seq_num = 1, .length = 64, .encrypted = 1}; PCIe_TLP tlp2 = {.tag = 6, .seq_num = 2, .length = 64, .encrypted = 1}; printf("=== CVE-2025-9612 PoC ===\n"); printf("PCIe IDE TLP Ordering and Tag Uniqueness Issue\n\n"); // Step 1: Capture encrypted TLP capture_encrypted_tlp(&tlp1, &ctx); // Step 2: Replay attack replay_tlp(&tlp1, &ctx); // Step 3: Reorder attack reorder_tlp_attack(&tlp1, &tlp2); printf("\n[CONCLUSION] System vulnerable to CVE-2025-9612\n"); return 0; }