CVE-2020-17131: 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

2020-Dec

Released

2020-12-08

EPSS Score

1.17% (percentile: 78.6%)

Affected Products (16)

Browser

• ChakraCore
• Microsoft Edge (EdgeHTML-based) on Windows 10 Version 20H2 for 32-bit Systems
• Microsoft Edge (EdgeHTML-based) on Windows 10 Version 20H2 for ARM64-based Systems
• Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for 32-bit Systems
• Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for x64-based Systems
• Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for ARM64-based Systems
• Microsoft Edge (EdgeHTML-based) on Windows Server 2019
• Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for 32-bit Systems
• Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for x64-based Systems
• Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for ARM64-based Systems
• Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for 32-bit Systems
• Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for x64-based Systems
• Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for ARM64-based Systems
• Microsoft Edge (EdgeHTML-based) on Windows 10 Version 2004 for 32-bit Systems
• Microsoft Edge (EdgeHTML-based) on Windows 10 Version 2004 for ARM64-based Systems
• Microsoft Edge (EdgeHTML-based) on Windows 10 Version 2004 for x64-based Systems

Security Updates (4)

• Release Notes
• 4592438
• 4592440
• 4592449

Acknowledgments

Bruno Keith (@bkth_) working with Trend Micro Zero Day Initiative

Revision History

• 2020-12-08: Information published.