CVE-2017-11909 ChakraCore vulnerable to remote code execution

High 7.5 Published 12 Dec 2017 Updated 16 Sep 2024

An attacker can execute arbitrary code in the context of the current user via a memory corruption flaw in the ChakraCore scripting engine used by Microsoft Edge.

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: Available

What is CVE-2017-11909?

CVE-2017-11909 is a high-severity memory corruption vulnerability in Microsoft Chakracore, published on 12 Dec 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 Windows 10 1511, 1607, 1703, 1709, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of 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-2017-11886, CVE-2017-11889, CVE-2017-11890, CVE-2017-11893, CVE-2017-11894, CVE-2017-11895, CVE-2017-11901, CVE-2017-11903, CVE-2017-11905, CVE-2017-11905, CVE-2017-11907, CVE-2017-11908, CVE-2017-11910, CVE-2017-11911, CVE-2017-11912, CVE-2017-11913, CVE-2017-11914, CVE-2017-11916, CVE-2017-11918, and CVE-2017-11930.

Weakness: CWE-119

Which versions are affected by CVE-2017-11909?

2 open source packages ship an affected version, including Microsoft.ChakraCore. It affects 2 products.

Package	Affected	Fixed in
`Microsoft.ChakraCore` NuGet	All versions	`1.7.5`
`Microsoft.ChakraCore` NuGet	All versions	`1.7.5`

Products include Microsoft Chakracore, Microsoft Edge.

How do I fix CVE-2017-11909?

Upgrade Microsoft.ChakraCore to 1.7.5 or later.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2017-11909 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-11909 exists.

Public exploit code: 1 Exploit-DB entry.

All Microsoft Chakracore vulnerabilities

Sources

Also known as GHSA-9qpf-v72j-j9qh.