In GOG Galaxy 1.2.67, there is a service that is vulnerable to weak file/service permissions: GalaxyClientService.exe. An attacker can put malicious code in a Trojan horse GalaxyClientService.exe. After that, the attacker can re-start this service as an unprivileged user to escalate his/her privileges and run commands on the machine with SYSTEM rights.
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.
Link | Tags |
---|---|
https://www.gog.com/galaxy | product vendor advisory |
https://fatihhcelik.blogspot.com/2020/04/gog-galaxy-desktop-app-local-privilege.html | third party advisory |