CVE-2018-8243 ChakraCore RCE Vulnerability
Remote attackers can execute arbitrary code 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
- Available
What is CVE-2018-8243?
CVE-2018-8243 is a high-severity memory corruption vulnerability in Microsoft Chakracore, published on 14 Jun 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 ChakraCore scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore. This CVE ID is unique from CVE-2018-8267.
Weakness: CWE-787
Which versions are affected by CVE-2018-8243?
2 open source packages ship an affected version, including Microsoft.ChakraCore. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
Microsoft.ChakraCore NuGet | All versions | 1.8.5 |
Microsoft.ChakraCore NuGet | All versions | 1.8.5 |
Products include Microsoft Chakracore.
How do I fix CVE-2018-8243?
Upgrade Microsoft.ChakraCore to 1.8.5 or later.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2018-8243 being exploited?
There is no known exploitation of CVE-2018-8243 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Chakracore
Sources
Also known as GHSA-w4qx-vw2w-q566.