CVE-2017-8591 Memory corruption in Windows Shell

High 7.8 Published Updated

Remote attackers can execute arbitrary code by exploiting a memory handling flaw in the Windows Input Method Editor.

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-2017-8591?

CVE-2017-8591 is a high-severity memory corruption vulnerability in Microsoft Windows 10, published on 8 Aug 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Windows Input Method Editor (IME) in Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allows an remote code execution vulnerability when it fails to properly handle objects in memory, aka "Windows IME Remote Code Execution Vulnerability".

Which versions are affected by CVE-2017-8591?

It affects 5 products.

Products include Microsoft Windows 10, Microsoft Windows 8.1, Microsoft Windows Rt 8.1, Microsoft Windows Server 2012, Microsoft Windows Server 2016.

How do I fix CVE-2017-8591?

No fix has been published for CVE-2017-8591 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2017-8591 being exploited?

There is no known exploitation of CVE-2017-8591 in the wild and no public exploit code.

All Microsoft Windows 10 vulnerabilities

Sources

Also known as GHSA-phgj-7rc6-g54r.

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