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CVE-2023-21687— HTTP.sys Information Disclosure Vulnerability

Quick assessment

Affected
Microsoft Windows 11 version 21H2
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是美国微软（Microsoft）公司的一套个人设备使用的操作系统。 Microsoft Windows HTTP.sys存在安全漏洞。以下产品和版本受到影响：Windows Server 2022,Windows Server 2022 (Server Core installation),Windows 11 version 21H2 for x64-based Systems,Windows 11 version 21H2 for ARM64-based System

CVSS 5.5 · Medium EPSS 0.46% · P38

Possible ATT&CK Techniques 1 AI

T1115 · Clipboard Data

Affected Version Matrix 3

VendorProduct Version RangeStatus
Microsoft Windows 11 version 21H2 10.0.0< 10.0.22621.1574 affected
Microsoft Windows 11 version 22H2 10.0.22621.0< 10.0.22621.1265 affected
Microsoft Windows Server 2022 10.0.20348.0< 10.0.20348.1547 affected
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I. Basic Information for CVE-2023-21687

Vulnerability Information
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Vulnerability Title
HTTP.sys Information Disclosure Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
HTTP.sys Information Disclosure Vulnerability
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows HTTP.sys 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows是美国微软（Microsoft）公司的一套个人设备使用的操作系统。 Microsoft Windows HTTP.sys存在安全漏洞。以下产品和版本受到影响：Windows Server 2022,Windows Server 2022 (Server Core installation),Windows 11 version 21H2 for x64-based Systems,Windows 11 version 21H2 for ARM64-based System
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 11 version 21H2 10.0.0 ~ 10.0.22621.1574 -
Microsoft Windows 11 version 22H2 10.0.22621.0 ~ 10.0.22621.1265 -
Microsoft Windows Server 2022 10.0.20348.0 ~ 10.0.20348.1547 -

II. Public POCs for CVE-2023-21687

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III. Intelligence Information for CVE-2023-21687

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Vendor Advisories for CVE-2023-21687 (1)

Same Patch Batch · Microsoft · 2023-02-14 · 78 CVEs total

CVE-2023-21689 9.8 CRITICAL Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulner
CVE-2023-21690 9.8 CRITICAL Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulner
CVE-2023-21692 9.8 CRITICAL Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulner
CVE-2023-21803 9.8 CRITICAL Windows iSCSI Discovery Service Remote Code Execution Vulnerability
CVE-2023-21716 9.8 CRITICAL Microsoft Word Remote Code Execution Vulnerability
CVE-2023-21685 8.8 HIGH Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability
CVE-2023-21707 8.8 HIGH Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2023-21706 8.8 HIGH Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2023-21684 8.8 HIGH Microsoft PostScript and PCL6 Class Printer Driver Remote Code Execution Vulnerability
CVE-2023-21705 8.8 HIGH Microsoft SQL Server Remote Code Execution Vulnerability
CVE-2023-21717 8.8 HIGH Microsoft SharePoint Server Elevation of Privilege Vulnerability
CVE-2023-21529 8.8 HIGH Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2023-21797 8.8 HIGH Microsoft ODBC Driver Remote Code Execution Vulnerability
CVE-2023-21798 8.8 HIGH Microsoft ODBC Driver Remote Code Execution Vulnerability
CVE-2023-21799 8.8 HIGH Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability
CVE-2023-21686 8.8 HIGH Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability
CVE-2023-21713 8.8 HIGH Microsoft SQL Server Remote Code Execution Vulnerability
CVE-2023-21777 8.7 HIGH Azure App Service on Azure Stack Hub Elevation of Privilege Vulnerability
CVE-2023-23374 8.3 HIGH Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2023-21806 8.2 HIGH Power BI Report Server Spoofing Vulnerability

Showing top 20 of 78 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Windows 11 version 21H2
Same vendor: Microsoft
Same weakness: CWE-125

V. Comments for CVE-2023-21687

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