cmseasy 最新版20140718 SQL注入一枚(无视360webscan)

2014-07-22T00:00:00
ID SSV:94005
Type seebug
Reporter Root
Modified 2014-07-22T00:00:00

Description

简要描述:

20140718,无视360webscan,无需登录。

详细说明:

/lib/table/stats.php 13行getbot函数:

public static function getbot() { $ServerName = $_SERVER["SERVER_NAME"]; $ServerPort = $_SERVER["SERVER_PORT"]; $ScriptName = $_SERVER["SCRIPT_NAME"]; $QueryString = $_SERVER["QUERY_STRING"]; $serverip = $_SERVER["REMOTE_ADDR"]; $GetLocationURL=self::geturl(); $agent1 = $_SERVER["HTTP_USER_AGENT"]; $agent=strtolower($agent1); $Bot=""; if(strpos($agent,"googlebot")>-1) { $Bot = "Google"; } if(strpos($agent,"mediapartners-google")>-1) { $Bot = "Google Adsense"; } if(strpos($agent,"baiduspider")>-1) { $Bot = "Baidu"; } if(strpos($agent,"sogou")>-1) { $Bot = "Sogou"; } if(strpos($agent,"yahoo")>-1) { $Bot = "Yahoo!"; } if(strpos($agent,"msn")>-1) { $Bot = "MSN"; } if(strpos($agent,"soso")>-1) { $Bot = "Soso"; } if(strpos($agent,"iaarchiver")>-1) { $Bot = "Alexa"; } if(strpos($agent,"sohu")>-1) { $Bot = "Sohu"; } if(strpos($agent,"sqworm")>-1) { $Bot = "AOL"; } if(strpos($agent,"yodaobot")>-1) { $Bot = "Yodao"; } if(strpos($agent,"iaskspider")>-1) { $Bot = "Iask"; } if(strlen($Bot)>0 &&!front::get('admin_dir')) { $stats = self::getInstance(); $insert = $stats->rec_insert(array('bot'=>$Bot,'url'=>$GetLocationURL,'ip'=>$serverip,'time'=>date('Y-m-d H:i:s'))); } }

其中判断了user-agent,如果是robot的话,就将其信息插入数据库。 我们看到,插入了这四项: array('bot'=>$Bot,'url'=>$GetLocationURL,'ip'=>$serverip,'time'=>date('Y-m-d H:i:s')) 其中$GetLocationURL来自self::geturl()函数,看看这个函数:

public static function geturl() { if(!empty($_SERVER["REQUEST_URI"])) { $scrtName = $_SERVER["REQUEST_URI"]; $nowurl = $scrtName; }else { $scrtName = $_SERVER["PHP_SELF"]; if(empty($_SERVER["QUERY_STRING"])) { $nowurl = $scrtName; }else { $nowurl = $scrtName."?".$_SERVER["QUERY_STRING"]; } } return (isset($_SERVER["HTTPS"])&&$_SERVER["HTTPS"] == "on")?'https://':'http://'.$_SERVER['HTTP_HOST'].$nowurl; }

直接取的$_SERVER['PHP_SELF']和$_SERVER['QUERY_STRING'],而$_SERVER并没有转义,造成了注入。 因为360webscanz只检测了$_GET、$_POST等变量,所以这里的注入无视360webscan。

漏洞证明:

向index.php发送如下数据包注入即可:

<img src="https://images.seebug.org/upload/201407/22195931ce818a8f90b53f37e1ac5578ba3f160e.jpg" alt="05.jpg" width="600" onerror="javascript:errimg(this);">

首先得把user-agent设置成百度蜘蛛,然后注入部分放在url中即可。 记录下的执行的sql语句如下:

<img src="https://images.seebug.org/upload/201407/22200916b5a9f84338f19f577dab4c328f083b4b.jpg" alt="04.jpg" width="600" onerror="javascript:errimg(this);">

我似乎没有在前台找到输出点,所以只能盲注了。具体代码我就不给了,盲注代码如下:

',(select/**/if((select/**/ord(substr(user(),1,1)))=114,sleep(3),0)),1)#