CVE-2017-11866 Memory corruption in ChakraCore, Microsoft Edge

High 7.5 Published Updated

An attacker can execute arbitrary code with current user rights via memory corruption in the ChakraCore scripting engine.

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-2017-11866?

CVE-2017-11866 is a high-severity memory corruption vulnerability in Microsoft Chakracore, 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

ChakraCore and Microsoft Edge in 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 the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-11836, CVE-2017-11837, CVE-2017-11838, CVE-2017-11839, CVE-2017-11840, CVE-2017-11841, CVE-2017-11843, CVE-2017-11846, CVE-2017-11858, CVE-2017-11859, CVE-2017-11861, CVE-2017-11862, CVE-2017-11869, CVE-2017-11870, CVE-2017-11871, and CVE-2017-11873.

Weakness: CWE-119

Which versions are affected by CVE-2017-11866?

It affects 2 products.

Products include Microsoft Chakracore, Microsoft Edge.

How do I fix CVE-2017-11866?

No fix has been published for CVE-2017-11866 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-2017-11866 being exploited?

There is no known exploitation of CVE-2017-11866 in the wild and no public exploit code.

All Microsoft Chakracore vulnerabilities

Sources

Also known as GHSA-743w-9rfh-p727.

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