CVE-2020-24574

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.8 HIGH
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 19%
VendorProductVersion
goggalaxy
2.0.13 ≤
𝑥
≤ 2.0.41
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
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/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/