CVE-2017-0277 Memory corruption in Microsoft Server Message Block 1.0

High 7.0 Published Updated

An attacker can execute remote code on Windows systems by exploiting improper handling of requests in the SMBv1 server.

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-2017-0277?

CVE-2017-0277 is a high-severity memory corruption vulnerability in Microsoft Windows 10, published on 12 May 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Microsoft Server Message Block 1.0 (SMBv1) server 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 an attacker to execute remote code by the way it handles certain requests, aka "Windows SMB Remote Code Execution Vulnerability". This CVE ID is unique from CVE-2017-0272, CVE-2017-0278, and CVE-2017-0279.

Which versions are affected by CVE-2017-0277?

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-2017-0277?

No fix has been published for CVE-2017-0277 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-2017-0277 being exploited?

There is no known exploitation of CVE-2017-0277 in the wild and no public exploit code.

All Microsoft Windows 10 vulnerabilities

Sources

Also known as GHSA-fgwg-p5ff-2987.

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