Vendor: https://www.gog.com/galaxy
Versions Affected: Prior to 1.2.67
Vulnerability: Local Privilege Escalation
Discoverer: Fatih Çelik
CVE: CVE-2020-11827
CVSS 3.x Base Score: 7.8 HIGH
Description:
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 service as a 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.