CVE-2018-8371 ChakraCore RCE Vulnerability

What is CVE-2018-8371?

CVE-2018-8371 is a high-severity memory corruption vulnerability in Microsoft Internet Explorer, published on 15 Aug 2018. 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

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka "Scripting Engine Memory Corruption Vulnerability." This affects Internet Explorer 9, Internet Explorer 11, Internet Explorer 10. This CVE ID is unique from CVE-2018-8353, CVE-2018-8355, CVE-2018-8359, CVE-2018-8372, CVE-2018-8373, CVE-2018-8385, CVE-2018-8389, CVE-2018-8390.

Weakness: CWE-787

Which versions are affected by CVE-2018-8371?

2 open source packages ship an affected version, including Microsoft.ChakraCore. It affects 1 product.

Products include Microsoft Internet Explorer.

How do I fix CVE-2018-8371?

Upgrade Microsoft.ChakraCore to 1.10.1 or later.

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

Is CVE-2018-8371 being exploited?

There is no known exploitation of CVE-2018-8371 in the wild and no public exploit code.

Other vulnerabilities in Microsoft Internet Explorer

• CVE-2014-1776 Microsoft Internet Explorer Memory Corruption Exploited Critical 9.8
• CVE-2021-27085 Microsoft Internet Explorer Remote Code Execution Exploited High 8.8
• CVE-2017-0222 Microsoft Internet Explorer Remote Code Execution Exploited High 8.8
• CVE-2017-0210 Microsoft Internet Explorer Privilege Escalation Exploited High 8.8
• CVE-2017-0149 Microsoft Internet Explorer Memory Corruption Exploited High 8.8

All Microsoft Internet Explorer vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-85j8-g29g-m326.