CVE-2018-0817 Use after free in Windows

High 7.0 Published 14 Mar 2018 Updated 17 Sep 2024

An attacker can exploit a memory handling flaw in Windows GDI to elevate privileges on affected Windows systems.

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-2018-0817?

CVE-2018-0817 is a high-severity use after free vulnerability in Microsoft Windows 10, published on 14 Mar 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The Windows Graphics Device Interface (GDI) in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1 and RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and 1709, Windows Server 2016 and Windows Server, version 1709 allows an elevation of privilege vulnerability due to the way objects are handled in memory, aka "Windows GDI Elevation of Privilege Vulnerability". This CVE is unique from CVE-2018-0815 and CVE-2018-0816.

Which versions are affected by CVE-2018-0817?

It affects 7 products.

Products include Microsoft Windows 10, Microsoft Windows 7, Microsoft Windows 8.1, Microsoft Windows Rt 8.1, Microsoft Windows Server 2008, Microsoft Windows Server 2012 and 1 more.

How do I fix CVE-2018-0817?

No fix has been published for CVE-2018-0817 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2018-0817 being exploited?

There is no known exploitation of CVE-2018-0817 in the wild and no public exploit code.

All Microsoft Windows 10 vulnerabilities

Sources

Also known as GHSA-fwp6-2rf9-9gvm.