CVE-2020-0711: Scripting Engine Memory Corruption Vulnerability

Overview

Severity

Medium (CVSS 4.2)

CVSS Vector

CVSS:3.0/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

Patch Tuesday

2020-Feb

Released

2020-02-11

EPSS Score

5.21% (percentile: 89.9%)

Description

A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. The security update addresses the vulnerability by modifying how the ChakraCore scripting engine handles objects in memory.

Affected Products (14)

Browser

• ChakraCore
• Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems
• Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems
• Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 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 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 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

Security Updates (4)

• Release Notes
• 4537762
• 4532691
• 4532693

Acknowledgments

MoonLiang of <a href="https://xlab.tencent.com/">Tencent Security Xuanwu Lab</a>, Looben Yang

Revision History

• 2020-02-11: Information published.