ASP.NET Core Development Environment - Exposure Detection
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""The ASP."""
from kittysploit import *
from lib.protocols.http.http_client import Http_client
class Module(Scanner, Http_client):
__info__ = {
'name': 'ASP.NET Core Development Environment - Exposure Detection',
'description': "The ASP.NET Core application is running in Development mode, which could exposes detailed error messages and stack traces on the '/Error' page.",
'author': ['KittySploit Team'],
'severity': 'info',
'tags': ['web', 'scanner', 'misconfiguration', 'misconfig', 'aspnetcore', 'exposure', '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': ['auxiliary/scanner/http/login_page_detector'],
},
},
'references': ['https://docs.microsoft.com/en-us/aspnet/core/fundamentals/environments'],
}
def run(self):
r = self.http_request(method="GET", path='/Error', allow_redirects=False)
if not r or r.status_code != 200:
return False
body = r.text or ""
body_any = ('<strong>ASPNETCORE_ENVIRONMENT</strong> environment variable to <strong>Development</strong>',)
body_all = ('ASPNETCORE_ENVIRONMENT', '<environment include="Development">',)
if (any(m in body for m in body_any)) and (all(m in body for m in body_all)):
self.set_info(
severity='info',
reason="ASP.NET Core Development Environment - Exposure detected",
path='/Error',
)
return True
return False
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28 Jul 2026 11:27Current
5.9Medium risk
Vulners AI Score5.9