CVE-2018-0856 ChakraCore RCE Vulnerability
Remote attackers can execute arbitrary code by exploiting a memory corruption flaw in the Microsoft Edge 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-2018-0856?
CVE-2018-0856 is a high-severity memory corruption vulnerability in Microsoft Chakracore, published on 15 Feb 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
Microsoft Edge and ChakraCore in Microsoft Windows 10 1703 and 1709 allows remote code execution, due to how the scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability". This CVE ID is unique from CVE-2018-0834, CVE-2018-0835, CVE-2018-0836, CVE-2018-0837, CVE-2018-0838, CVE-2018-0840, CVE-2018-0857, CVE-2018-0858, CVE-2018-0859, CVE-2018-0860, CVE-2018-0861, and CVE-2018-0866.
Weakness: CWE-787
Which versions are affected by CVE-2018-0856?
2 open source packages ship an affected version, including Microsoft.ChakraCore. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
Microsoft.ChakraCore NuGet | All versions | 1.8.1 |
Microsoft.ChakraCore NuGet | All versions | 1.8.1 |
Products include Microsoft Chakracore, Microsoft Edge.
How do I fix CVE-2018-0856?
Upgrade Microsoft.ChakraCore to 1.8.1 or later.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2018-0856 being exploited?
There is no known exploitation of CVE-2018-0856 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Chakracore
Sources
Also known as GHSA-399v-jg88-3gx6.