CVE-2019-17180 Path traversal in n/a

High 7.8 Published 4 Oct 2019 Updated 5 Aug 2024

Attackers can manipulate filesystem content to achieve privilege escalation or denial of service in the Steam Client.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2019-17180?

CVE-2019-17180 is a high-severity path traversal vulnerability in n/a, published on 4 Oct 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Valve Steam Client before 2019-09-12 allows placing or appending partially controlled filesystem content, as demonstrated by file modifications on Windows in the context of NT AUTHORITY\SYSTEM. This could lead to denial of service, elevation of privilege, or unspecified other impact.

Weakness: CWE-22

Which versions are affected by CVE-2019-17180?

It affects 1 product.

Products include Valvesoftware Steam Client.

How do I fix CVE-2019-17180?

No fix has been published for CVE-2019-17180 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2019-17180 being exploited?

There is no known exploitation of CVE-2019-17180 in the wild and no public exploit code.

Sources

Also known as GHSA-mwv8-pr5j-j6w9.