CVE-2018-4048 Privilege escalation in GOG Galaxy

Critical 9.3 Published Updated

Local attackers can overwrite updater executables in the Temp directory to execute arbitrary code with SYSTEM privileges on GOG Galaxy.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Local or same network only
Victim action needed
Not needed
Fix
None listed

What is CVE-2018-4048?

CVE-2018-4048 is a critical vulnerability in Talos GOG Galaxy, published on 30 May 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An exploitable local privilege elevation vulnerability exists in the file system permissions of the `Temp` directory in GOG Galaxy 1.2.48.36 (Windows 64-bit Installer). An attacker can overwrite executables of the Desktop Galaxy Updater to exploit this vulnerability and execute arbitrary code with SYSTEM privileges.

Weakness: CWE-668

Which versions are affected by CVE-2018-4048?

It affects 1 product.

Products include Gog Galaxy.

How do I fix CVE-2018-4048?

No fix has been published for CVE-2018-4048 yet. Limit exposure of the affected software until one is available.

Is CVE-2018-4048 being exploited?

There is no known exploitation of CVE-2018-4048 in the wild and no public exploit code.

Sources

Also known as GHSA-cxcg-fx4q-4w62.

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