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CVE-2021-38635— Windows Redirected Drive Buffering SubSystem Driver Information Disclosure Vulnerability

Quick assessment

Affected
Microsoft Windows 10 Version 1507
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 Redirected Drive Buffering是美国微软（Microsoft）公司的重定向驱动器缓冲子系统 (RDBSS) 作为内核模式文件系统驱动程序rdbss.sys 提供，它包含在操作系统中，作为静态库rdbsslib.lib 提供，它包含在 Windows 驱动程序工具包 (WDK) 中）。 Microsoft Windows Redirected Drive Buffering存在信息泄露漏洞。以下产品和版本受到影响：Windows 10 Version

CVSS 5.5 · Medium EPSS 0.87% · P56

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System

Affected Version Matrix 26

VendorProduct Version RangeStatus
Microsoft Windows 10 Version 1507 10.0.10240.0< 10.0.10240.19060 affected
Microsoft Windows 10 Version 1607 10.0.14393.0< 10.0.14393.4651 affected
Microsoft Windows 10 Version 1809 10.0.17763.0< 10.0.17763.2183 affected
10.0.0< 10.0.17763.2183 affected
Microsoft Windows 10 Version 1909 10.0.0< 10.0.18363.1801 affected
Microsoft Windows 10 Version 2004 10.0.0< 10.0.19041.1237 affected
Microsoft Windows 10 Version 20H2 10.0.0< 10.0.19042.1237 affected
Microsoft Windows 10 Version 21H1 10.0.0< 10.0.19043.1237 affected
Microsoft Windows 7 6.1.0< 6.1.7601.25712 affected
Microsoft Windows 7 Service Pack 1 6.1.0< 6.1.7601.25712 affected
Microsoft Windows 8.1 6.3.0< 6.3.9600.20120 affected
Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.0< 6.1.7601.25712 affected
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0< 6.1.7601.25712 affected
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0< 6.0.6003.21218 affected
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0< 6.0.6003.21218 affected
Microsoft Windows Server 2012 6.2.9200.0< 6.2.9200.23462 affected
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0< 6.2.9200.23462 affected
Microsoft Windows Server 2012 R2 6.3.9600.0< 6.3.9600.20120 affected
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0< 6.3.9600.20120 affected
Microsoft Windows Server 2016 10.0.14393.0< 10.0.14393.4651 affected
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0< 10.0.14393.4651 affected
Microsoft Windows Server 2019 10.0.17763.0< 10.0.17763.2183 affected
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0< 10.0.17763.2183 affected
Microsoft Windows Server 2022 10.0.20348.0< 10.0.20348.230 affected
Microsoft Windows Server version 2004 10.0.0< 10.0.19041.1237 affected
Microsoft Windows Server version 20H2 10.0.0< 10.0.19042.1237 affected
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I. Basic Information for CVE-2021-38635

Vulnerability Information
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Vulnerability Title
Windows Redirected Drive Buffering SubSystem Driver Information Disclosure Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Windows Redirected Drive Buffering SubSystem Driver 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
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows Redirected Drive Buffering 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows Redirected Drive Buffering是美国微软（Microsoft）公司的重定向驱动器缓冲子系统 (RDBSS) 作为内核模式文件系统驱动程序rdbss.sys 提供，它包含在操作系统中，作为静态库rdbsslib.lib 提供，它包含在 Windows 驱动程序工具包 (WDK) 中）。 Microsoft Windows Redirected Drive Buffering存在信息泄露漏洞。以下产品和版本受到影响：Windows 10 Version
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 1507 10.0.10240.0 ~ 10.0.10240.19060 -
Microsoft Windows 10 Version 1607 10.0.14393.0 ~ 10.0.14393.4651 -
Microsoft Windows 10 Version 1809 10.0.17763.0 ~ 10.0.17763.2183 -
Microsoft Windows 10 Version 1809 10.0.0 ~ 10.0.17763.2183 -
Microsoft Windows 10 Version 1909 10.0.0 ~ 10.0.18363.1801 -
Microsoft Windows 10 Version 2004 10.0.0 ~ 10.0.19041.1237 -
Microsoft Windows 10 Version 20H2 10.0.0 ~ 10.0.19042.1237 -
Microsoft Windows 10 Version 21H1 10.0.0 ~ 10.0.19043.1237 -
Microsoft Windows 7 6.1.0 ~ 6.1.7601.25712 -
Microsoft Windows 7 Service Pack 1 6.1.0 ~ 6.1.7601.25712 -
Microsoft Windows 8.1 6.3.0 ~ 6.3.9600.20120 -
Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.0 ~ 6.1.7601.25712 -
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0 ~ 6.1.7601.25712 -
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 ~ 6.0.6003.21218 -
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0 ~ 6.0.6003.21218 -
Microsoft Windows Server 2012 6.2.9200.0 ~ 6.2.9200.23462 -
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 ~ 6.2.9200.23462 -
Microsoft Windows Server 2012 R2 6.3.9600.0 ~ 6.3.9600.20120 -
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 ~ 6.3.9600.20120 -
Microsoft Windows Server 2016 10.0.14393.0 ~ 10.0.14393.4651 -
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 ~ 10.0.14393.4651 -
Microsoft Windows Server 2019 10.0.17763.0 ~ 10.0.17763.2183 -
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 ~ 10.0.17763.2183 -
Microsoft Windows Server 2022 10.0.20348.0 ~ 10.0.20348.230 -
Microsoft Windows Server version 2004 10.0.0 ~ 10.0.19041.1237 -
Microsoft Windows Server version 20H2 10.0.0 ~ 10.0.19042.1237 -

II. Public POCs for CVE-2021-38635

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III. Intelligence Information for CVE-2021-38635

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Vendor Advisories for CVE-2021-38635 (2)

Same Patch Batch · Microsoft · 2021-09-15 · 61 CVEs total

CVE-2021-38647 9.8 CRITICAL Open Management Infrastructure (OMI) Remote Code Execution Vulnerability
CVE-2021-36954 8.8 HIGH Windows Bind Filter Driver Elevation of Privilege Vulnerability
CVE-2021-40444 8.8 HIGH Microsoft MSHTML Remote Code Execution Vulnerability
CVE-2021-36965 8.8 HIGH Windows WLAN AutoConfig Service Remote Code Execution Vulnerability
CVE-2021-26435 8.1 HIGH Windows Scripting Engine Memory Corruption Vulnerability
CVE-2021-36967 8.0 HIGH Windows WLAN AutoConfig Service Elevation of Privilege Vulnerability
CVE-2021-38653 7.8 HIGH Microsoft Office Visio Remote Code Execution Vulnerability
CVE-2021-38625 7.8 HIGH Windows Kernel Elevation of Privilege Vulnerability
CVE-2021-38644 7.8 HIGH Microsoft MPEG-2 Video Extension Remote Code Execution Vulnerability
CVE-2021-38645 7.8 HIGH Open Management Infrastructure Elevation of Privilege Vulnerability
CVE-2021-38646 7.8 HIGH Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability
CVE-2021-38648 7.8 HIGH Open Management Infrastructure Elevation of Privilege Vulnerability
CVE-2021-38639 7.8 HIGH Win32k Elevation of Privilege Vulnerability
CVE-2021-38633 7.8 HIGH Windows Common Log File System Driver Elevation of Privilege Vulnerability
CVE-2021-38655 7.8 HIGH Microsoft Excel Remote Code Execution Vulnerability
CVE-2021-38630 7.8 HIGH Windows Event Tracing Elevation of Privilege Vulnerability
CVE-2021-38656 7.8 HIGH Microsoft Word Remote Code Execution Vulnerability
CVE-2021-38628 7.8 HIGH Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
CVE-2021-38626 7.8 HIGH Windows Kernel Elevation of Privilege Vulnerability
CVE-2021-36975 7.8 HIGH Win32k Elevation of Privilege Vulnerability

Showing top 20 of 61 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Windows 10 Version 1507
Same vendor: Microsoft

V. Comments for CVE-2021-38635

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