CVE-2017-11858 Memory corruption in ChakraCore, Microsoft Edge, Internet Explorer

High 7.5 Published 15 Nov 2017 Updated 17 Sep 2024

An attacker can execute arbitrary code with current user rights via memory corruption in Microsoft browsers.

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-2017-11858?

CVE-2017-11858 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 Internet Explorer in Microsoft Windows 7 SP1, Windows Server 2008 and R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, and Microsoft Edge and Internet Explorer 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 Microsoft browsers handle 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-2017-11859, CVE-2017-11861, CVE-2017-11862, CVE-2017-11866, CVE-2017-11869, CVE-2017-11870, CVE-2017-11871, and CVE-2017-11873.

Weakness: CWE-119

Which versions are affected by CVE-2017-11858?

It affects 3 products.

Products include Microsoft Chakracore, Microsoft Edge, Microsoft Internet Explorer.

How do I fix CVE-2017-11858?

No fix has been published for CVE-2017-11858 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-2017-11858 being exploited?

There is no known exploitation of CVE-2017-11858 in the wild and no public exploit code.

All Microsoft Chakracore vulnerabilities

Sources

Also known as GHSA-w6f6-8p4j-54vr.