CVE-2021-42279: Chakra Scripting Engine Memory Corruption Vulnerability

Overview

Severity

Medium (CVSS 4.2)

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C

Category

Remote Code Execution

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2021-Nov

Released

2021-11-09

Last Updated

2022-08-03

EPSS Score

2.95% (percentile: 86.5%)

Affected Products (26)

Browser

• ChakraCore

Windows

• Windows 10 Version 21H1 for x64-based Systems
• Windows 11 version 21H2 for ARM64-based Systems
• Windows 11 version 21H2 for x64-based Systems
• Windows Server 2022
• Windows 10 Version 21H1 for 32-bit Systems
• Windows 10 Version 21H1 for ARM64-based Systems
• Windows Server, version 20H2 (Server Core Installation)
• Windows 10 Version 1909 for ARM64-based Systems
• Windows 10 Version 1909 for 32-bit Systems
• Windows 10 Version 20H2 for ARM64-based Systems
• Windows 10 Version 2004 for ARM64-based Systems
• Windows 10 Version 20H2 for 32-bit Systems
• Windows 10 for 32-bit Systems
• Windows 10 Version 1909 for x64-based Systems
• Windows 10 Version 2004 for 32-bit Systems
• Windows Server, version 2004 (Server Core installation)
• Windows 10 Version 1607 for 32-bit Systems
• Windows 10 Version 2004 for x64-based Systems
• Windows Server 2019
• Windows 10 Version 1809 for ARM64-based Systems
• Windows 10 Version 1809 for 32-bit Systems
• Windows 10 Version 1809 for x64-based Systems
• Windows 10 Version 1607 for x64-based Systems
• Windows 10 for x64-based Systems
• Windows Server 2016

Security Updates (7)

• 5007186
• 5007215
• 5007205
• 5007189
• 5007207
• 5007192
• 5007206

Acknowledgments

$NULL with ICT

Revision History

• 2021-11-09: Information published.
• 2022-08-03: Revised the Affected Products table to include ChakraCore for this vulnerability.