CVE-2017-0269 Denial of service in Server Block Message 1.0

Medium 5.9 Published Updated

Attackers can cause a denial of service on Windows systems by sending specially crafted requests to 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-2017-0269?

CVE-2017-0269 is a medium-severity denial of service 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) allows denial of service when an attacker sends specially crafted requests to the server, aka "Windows SMB Denial of Service Vulnerability". This CVE ID is unique from CVE-2017-0273 and CVE-2017-0280.

Weakness: CWE-20

Which versions are affected by CVE-2017-0269?

It affects 6 products.

Products include Microsoft Windows 10, Microsoft Windows 7, Microsoft Windows 8.1, Microsoft Windows Server 2008, Microsoft Windows Server 2012, Microsoft Windows Server 2016.

How do I fix CVE-2017-0269?

No fix has been published for CVE-2017-0269 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-2017-0269 being exploited?

There is no known exploitation of CVE-2017-0269 in the wild and no public exploit code.

All Microsoft Windows 10 vulnerabilities

Sources

Also known as GHSA-g5w5-8h24-v8qp.

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