CVE-2019-1317 Denial of service in Windows

High 7.3 Published Updated

Attackers can cause a denial of service in Microsoft Windows by exploiting improper handling of hard links.

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-2019-1317?

CVE-2019-1317 is a high-severity denial of service vulnerability in Microsoft Windows 10, published on 10 Oct 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A denial of service vulnerability exists when Windows improperly handles hard links, aka 'Microsoft Windows Denial of Service Vulnerability'.

Weakness: CWE-59

Which versions are affected by CVE-2019-1317?

It affects 3 products.

Products include Microsoft Windows 10, Microsoft Windows Server 2016, Microsoft Windows Server 2019.

How do I fix CVE-2019-1317?

No fix has been published for CVE-2019-1317 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2019-1317 being exploited?

There is no known exploitation of CVE-2019-1317 in the wild and no public exploit code.

All Microsoft Windows 10 vulnerabilities

Sources

Also known as GHSA-49wq-r246-v593.

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