GOG Galaxy GalaxyClientService Privilege Escalation
CVE-2020-7352

8.4HIGH

Key Information:

Vendor

Gog

Status
Gog Galaxyclientservice
Vendor
CVE Published:
6 August 2020

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 11%

What is CVE-2020-7352?

The GalaxyClientService component of GOG Galaxy runs with elevated SYSTEM privileges in a Windows environment. Due to the software shipping with embedded, static RSA private key, an attacker with this key material and local user permissions can effectively send any operating system command to the service for execution in this elevated context. The service listens for such commands on a locally-bound network port, localhost:9978. A Metasploit module has been published which exploits this vulnerability. This issue affects the 2.0.x branch of the software (2.0.12 and earlier) as well as the 1.2.x branch (1.2.64 and earlier). A fix was issued for the 2.0.x branch of the affected software.

Affected Version(s)

GOG GalaxyClientService 2.0.12

GOG GalaxyClientService 1.2.64

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

PS-CVE-2020-7352
Created by szerszen199

References

https://github.com/rapid7/metasploit-framework/pull/13444
x_refsource_MISC
https://www.positronsecurity.com/blog/2020-04-28-gog-gala...
x_refsource_MISC

EPSS Score

11% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

This issue was discovered and reported to Rapid7 by Joe Testa via the Metasploit Framework.
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