Vulnerability · Published Nov 10, 2021 · Assigned by microsoft
CVE-2021-42279Chakra Scripting Engine Memory Corruption Vulnerability
Medium 4.2
In plain English
A medium-severity security flaw in ChakraCore from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.3% (higher than 84% of all known vulnerabilities).
Severity (CVSS 3.1)4.2Medium
Exploit odds (30 days)2.3%top 16.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Chakra Scripting Engine Memory Corruption Vulnerability
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| NuGet | microsoft.chakracore | no fix listed | GHSA-jgrp-6qqq-3284 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | ChakraCore | - |
| Microsoft | Windows 10 Version 1507 | 10.0.10240.0 – before 10.0.10240.19119 |
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 – before 10.0.14393.4770 |
| Microsoft | Windows 10 Version 1809 | 10.0.0 – before 10.0.17763.2300 |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – before 10.0.17763.2300 |
| Microsoft | Windows 10 Version 1909 | 10.0.0 – before 10.0.18363.1916 |
| Microsoft | Windows 10 Version 2004 | 10.0.0 – before 10.0.19041.1348 |
| Microsoft | Windows 10 Version 20H2 | 10.0.0 – before 10.0.19042.1348 |
| Microsoft | Windows 10 Version 21H1 | 10.0.0 – before 10.0.19043.1348 |
| Microsoft | Windows 11 version 21H2 | 10.0.22000.0 – before 10.0.22000.318 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 – before 10.0.14393.4770 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – before 10.0.17763.2300 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – before 10.0.20348.350 |
| Microsoft | Windows Server version 2004 | 10.0.0 – before 10.0.19041.1348 |
| Microsoft | Windows Server version 20H2 | 10.0.0 – before 10.0.19042.1348 |
References
- Chakra Scripting Engine Memory Corruption Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42279 x_refsource_MISC, x_transferred