CVE-2017-8636 Memory corruption in Microsoft Scripting Engine

High 7.5 Published Updated

Attackers can execute arbitrary code via memory corruption in Microsoft browser JavaScript engines, affecting Windows users.

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-2017-8636?

CVE-2017-8636 is a high-severity memory corruption vulnerability in Microsoft Edge, published on 8 Aug 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

Microsoft browsers in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allow an attacker to execute arbitrary code in the context of the current user due to the way that Microsoft browser JavaScript engines render content when handling objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-8634, CVE-2017-8635, CVE-2017-8638, CVE-2017-8639, CVE-2017-8640, CVE-2017-8641, CVE-2017-8645, CVE-2017-8646, CVE-2017-8647, CVE-2017-8655, CVE-2017-8656, CVE-2017-8657, CVE-2017-8670, CVE-2017-8671, CVE-2017-8672, and CVE-2017-8674.

Weakness: CWE-119

Which versions are affected by CVE-2017-8636?

It affects 2 products.

Products include Microsoft Edge, Microsoft Internet Explorer.

How do I fix CVE-2017-8636?

No fix has been published for CVE-2017-8636 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-2017-8636 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-8636 exists.

Public exploit code: 4 Exploit-DB entries.

All Microsoft Edge vulnerabilities

Sources

Also known as GHSA-xvj3-97mf-29q5.

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