CVE-2021-43228— SymCrypt Denial of Service Vulnerability
Quick assessment
Affected
Microsoft Windows 10 Version 1809
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Microsoft Windows SymCrypt是美国微软（Microsoft）公司的SymCrypt 是 Windows 当前使用的核心加密函数库。 Microsoft Windows SymCrypt存在资源管理错误漏洞。以下产品和版本受到影响：Windows 10 Version 1809 for 32-bit Systems,Windows 10 Version 1809 for x64-based Systems,Windows 10 Version 1809 for ARM64-based
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-43228
Vulnerability Information
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Vulnerability Title
SymCrypt Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
SymCrypt Denial of Service Vulnerability
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows SymCrypt 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows SymCrypt是美国微软（Microsoft）公司的SymCrypt 是 Windows 当前使用的核心加密函数库。 Microsoft Windows SymCrypt存在资源管理错误漏洞。以下产品和版本受到影响：Windows 10 Version 1809 for 32-bit Systems,Windows 10 Version 1809 for x64-based Systems,Windows 10 Version 1809 for ARM64-based
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Microsoft | Windows 10 Version 1809 | 10.0.0 ~ 10.0.17763.2366 |
cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.2366:*:*:*:*:*:x86:*
|
|
| Microsoft | Windows Server 2019 | 10.0.0 ~ 10.0.17763.2366 |
cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.2366:*:*:*:*:*:*:*
|
|
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.0 ~ 10.0.17763.2366 |
cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.2366:*:*:*:*:*:*:*
|
|
| Microsoft | Windows 10 Version 1909 | 10.0.0 ~ 10.0.18363.1977 |
cpe:2.3:o:microsoft:windows_10_1909:10.0.18363.1977:*:*:*:*:*:x86:*
|
|
| Microsoft | Windows 10 Version 21H1 | 10.0.0 ~ 10.0.19043.1415 |
cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1415:*:*:*:*:*:x64:*
|
|
| Microsoft | Windows Server 2022 | 10.0.0 ~ 10.0.20348.405 |
cpe:2.3:o:microsoft:windows_server_2022:10.0.20348.405:*:*:*:*:*:*:*
|
|
| Microsoft | Windows 10 Version 2004 | 10.0.0 ~ 10.0.19041.1415 |
cpe:2.3:o:microsoft:windows_10_1809:10.0.19041.1415:*:*:*:*:*:x64:*
|
|
| Microsoft | Windows Server version 2004 | 10.0.0 ~ 10.0.19041.1415 |
cpe:2.3:o:microsoft:windows_server_2004:10.0.19041.1415:*:*:*:*:*:*:*
|
|
| Microsoft | Windows 10 Version 20H2 | 10.0.0 ~ 10.0.19042.1415 |
cpe:2.3:o:microsoft:windows_10_20H2:10.0.19042.1415:*:*:*:*:*:x86:*
|
|
| Microsoft | Windows Server version 20H2 | 10.0.0 ~ 10.0.19042.1415 |
cpe:2.3:o:microsoft:windows_server_20H2:10.0.19042.1415:*:*:*:*:*:*:*
|
|
| Microsoft | Windows 11 version 21H2 | 10.0.0 ~ 10.0.22000.376 |
cpe:2.3:o:microsoft:windows_11_21H2:10.0.22000.376:*:*:*:*:*:x64:*
|
|
| Microsoft | Windows 10 Version 21H2 | 10.0.0 ~ 10.0.19044.1415 |
cpe:2.3:o:microsoft:windows_10_21H2:10.0.19044.1415:*:*:*:*:*:x86:*
|
|
II. Public POCs for CVE-2021-43228
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2021-43228 (1)
Same Patch Batch · Microsoft · 2021-12-15 · 67 CVEs total
| CVE-2021-42313 | 10.0 CRITICAL | Microsoft Defender for IoT Remote Code Execution Vulnerability |
| CVE-2021-42311 | 10.0 CRITICAL | Microsoft Defender for IoT Remote Code Execution Vulnerability |
| CVE-2021-43215 | 9.8 CRITICAL | iSNS Server Memory Corruption Vulnerability Can Lead to Remote Code Execution |
| CVE-2021-43907 | 9.8 CRITICAL | Visual Studio Code WSL Extension Remote Code Execution Vulnerability |
| CVE-2021-43899 | 9.8 CRITICAL | Microsoft 4K Wireless Display Adapter Remote Code Execution Vulnerability |
| CVE-2021-43905 | 9.6 CRITICAL | Microsoft Office app Remote Code Execution Vulnerability |
| CVE-2021-43882 | 9.0 CRITICAL | Microsoft Defender for IoT Remote Code Execution Vulnerability |
| CVE-2021-42315 | 8.8 HIGH | Microsoft Defender for IoT Remote Code Execution Vulnerability |
| CVE-2021-42314 | 8.8 HIGH | Microsoft Defender for IoT Remote Code Execution Vulnerability |
| CVE-2021-41365 | 8.8 HIGH | Microsoft Defender for IoT Remote Code Execution Vulnerability |
| CVE-2021-42309 | 8.8 HIGH | Microsoft SharePoint Server Remote Code Execution Vulnerability |
| CVE-2021-43877 | 8.8 HIGH | ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability |
| CVE-2021-43217 | 8.1 HIGH | Windows Encrypting File System (EFS) Remote Code Execution Vulnerability |
| CVE-2021-42310 | 8.1 HIGH | Microsoft Defender for IoT Remote Code Execution Vulnerability |
| CVE-2021-42320 | 8.0 HIGH | Microsoft SharePoint Server Spoofing Vulnerability |
| CVE-2021-43231 | 7.8 HIGH | Windows NTFS Elevation of Privilege Vulnerability |
| CVE-2021-43226 | 7.8 HIGH | Windows Common Log File System Driver Elevation of Privilege Vulnerability |
| CVE-2021-43232 | 7.8 HIGH | Windows Event Tracing Remote Code Execution Vulnerability |
| CVE-2021-43223 | 7.8 HIGH | Windows Remote Access Connection Manager Elevation of Privilege Vulnerability |
| CVE-2021-43230 | 7.8 HIGH | Windows NTFS Elevation of Privilege Vulnerability |
Showing top 20 of 67 CVEs. View all on vendor page → →
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V. Comments for CVE-2021-43228
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