CVE-2017-0185 Denial of service in Hyper-V

Medium 5.8 Published Updated

A privileged guest user can cause a denial of service in the Hyper-V Network Switch on Windows hosts by sending improperly validated input.

Exploited in the wild
Not known
Login needed
An administrator
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2017-0185?

CVE-2017-0185 is a medium-severity denial of service vulnerability in Microsoft Windows 10, published on 12 Apr 2017. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

A denial of service vulnerability exists when Microsoft Hyper-V Network Switch running on a Windows 10, Windows 8.1, Windows Server 2012, Windows Server 2012 R2, or Windows Server 2016 host server fails to properly validate input from a privileged user on a guest operating system, aka "Hyper-V Denial of Service Vulnerability." This CVE ID is unique from CVE-2017-0178, CVE-2017-0179, CVE-2017-0182, CVE-2017-0183, CVE-2017-0184, and CVE-2017-0186.

Weakness: CWE-20

Which versions are affected by CVE-2017-0185?

It affects 4 products.

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

How do I fix CVE-2017-0185?

No fix has been published for CVE-2017-0185 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-2017-0185 being exploited?

There is no known exploitation of CVE-2017-0185 in the wild and no public exploit code.

All Microsoft Windows 10 vulnerabilities

Sources

Also known as GHSA-4849-x279-v4q2.

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