Entreprise française de cybersécurité depuis 2004
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☎ 03 60 47 09 81 - info@securiteinfo.com
The client (aka GalaxyClientService.exe) in GOG GALAXY through 2.0.41 (as of 12:58 AM Eastern, 9/26/21) allows local privilege escalation from any authenticated user to SYSTEM by instructing the Windows service to execute arbitrary commands. This occurs because the attacker can inject a DLL into GalaxyClient.exe, defeating the TCP-based "trusted client" protection mechanism.
- https://github.com/jtesta/gog_galaxy_client_service_poc
- https://github.com/jtesta/gog_galaxy_client_service_poc/issues/1#issuecomment-926932218
- https://www.gog.com/galaxy
- https://www.positronsecurity.com/blog/2020-08-13-gog-galaxy_client-local-privilege-escalation_deuce/
- https://github.com/anvilsecure/gog-galaxy-app-research
- https://github.com/jtesta/gog_galaxy_client_service_poc