CVE-2011-1871 Denial of service in n/a

High 7.8 Published Updated

Remote attackers can cause a system reboot by sending crafted ICMP messages to the Windows TCP/IP stack.

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-2011-1871?

CVE-2011-1871 is a high-severity denial of service vulnerability in Microsoft Windows 7, published on 10 Aug 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Tcpip.sys in the TCP/IP stack in Microsoft Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows remote attackers to cause a denial of service (reboot) via a series of crafted ICMP messages, aka "ICMP Denial of Service Vulnerability."

Weakness: CWE-399

Which versions are affected by CVE-2011-1871?

It affects 3 products.

Products include Microsoft Windows 7, Microsoft Windows Server 2008, Microsoft Windows Vista.

How do I fix CVE-2011-1871?

No fix has been published for CVE-2011-1871 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-2011-1871 being exploited?

There is no known exploitation of CVE-2011-1871 in the wild and no public exploit code.

All Microsoft Windows 7 vulnerabilities

Sources

Also known as GHSA-99xj-9xhx-pcp4.

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