CVE-2017-11856 Memory corruption in Internet Explorer

High 7.5 Published Updated

Memory corruption in Internet Explorer allows attackers to execute arbitrary code with current user privileges.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2017-11856?

CVE-2017-11856 is a high-severity memory corruption vulnerability in Microsoft Internet Explorer, published on 15 Nov 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Internet Explorer in Microsoft Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 R2, Windows 10 Gold, 1511, 1607, 1703, 1709, Windows Server 2016 and Windows Server, version 1709 allows an attacker to gain the same user rights as the current user, due to how Internet Explorer handles objects in memory, aka "Internet Explorer Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-11855.

Weakness: CWE-119

Which versions are affected by CVE-2017-11856?

It affects 1 product.

Products include Microsoft Internet Explorer.

How do I fix CVE-2017-11856?

No fix has been published for CVE-2017-11856 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-2017-11856 being exploited?

There is no known exploitation of CVE-2017-11856 in the wild and no public exploit code.

All Microsoft Internet Explorer vulnerabilities

Sources

Also known as GHSA-m96c-6wph-7qmm.

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