Description
Ozeki NG SMS Gateway 4.17.1 through 4.17.6 does not check the file type when bulk importing new contacts ("Import Contacts" functionality) from a file. It is possible to upload an executable or .bat file that can be executed with the help of a functionality (E.g. the "Application Starter" module) within the application.
References
- https://www.ozeki.hu/index.php?owpn=231
- https://www.ozeki.hu/index.php?ow_page_number=1017&downloadaction=email&download_product_id=1&os=windows&dpath=%2Fattachments%2F702%2Finstallwindows_1590575794_OzekiNG-SMS-Gateway_4.17.6.zip&dname=Ozeki+NG+SMS+Gateway+v4.17.6&dsize=+%2817.8+MB%29&platform=Windows
- https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2020-14022-Dangerous%20File%20Upload-Ozeki%20SMS%20Gateway