CVE-2017-11771 Code injection in Windows Search

Critical 9.8 Published 13 Oct 2017 Updated 16 Sep 2024

Remote attackers can execute arbitrary code on Windows systems by exploiting improper handling of DNS responses in the Windows Search component.

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

What is CVE-2017-11771?

CVE-2017-11771 is a critical code injection vulnerability in Microsoft Windows 10, published on 13 Oct 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Microsoft Windows Search component on Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, 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 a remote code execution vulnerability when it fails to properly handle DNS responses, aka "Windows Search Remote Code Execution Vulnerability".

Weakness: CWE-20

Which versions are affected by CVE-2017-11771?

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-2017-11771?

No fix has been published for CVE-2017-11771 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2017-11771 being exploited?

There is no known exploitation of CVE-2017-11771 in the wild and no public exploit code.

All Microsoft Windows 10 vulnerabilities

Sources

Also known as GHSA-9vvc-6v43-39qc.