SYSTEM privilege escalation via unchecked IPC path
Published Apr 30, 2024 · Updated Aug 2, 2024
Privilege escalation in GOG GALAXY 2.0.67.2 through 2.0.71.2 allows local users to obtain SYSTEM access through a crafted IPC request. The privileged GalaxyClientService.exe accepts a caller-controlled directory in the signed FixDirectoryPrivileges instruction and grants Everyone full control without validating the path. An authenticated desktop session and a trusted GalaxyClient.exe process are required; the altered permissions enable DLL planting and SYSTEM command execution when the service loads the planted code.
Summary
What happened
Privilege escalation in GOG GALAXY 2.0.67.2 through 2.0.71.2 allows local users to obtain SYSTEM access through a crafted IPC request. The privileged GalaxyClientService.exe accepts a caller-controlled directory in the signed FixDirectoryPrivileges instruction and grants Everyone full control without validating the path. An authenticated desktop session and a trusted GalaxyClient.exe process are required; the altered permissions enable DLL planting and SYSTEM command execution when the service loads the planted code.
The record
- CVE
- CVE-2023-50914
- Published
- Apr 30, 2024
- Updated
- Aug 2, 2024
- Vendor
- GOG
- Product
- GOG GALAXY
- Classifications
- CWE-279, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 30, 2024CVE publishedPublication date reported by the CVE source.
- Aug 2, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.0.67.2 <=v2.071.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GOG Galaxy Local Privilege Escalation PoCproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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