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

Published Sep 14, 2021
·
Updated

Windows Redirected Drive Buffering SubSystem Driver Information Disclosure Vulnerability

Affected Software

60 affected componentsFixes available
Microsoft Windows 10
Microsoft Windows 10=20h2
Microsoft Windows 10=21h1
Microsoft Windows 10=1607
Microsoft Windows 10=1809
Microsoft Windows 10=1909
Microsoft Windows 10=2004
Microsoft Windows 7=sp1
Microsoft Windows 8.1
Microsoft Windows RT 8.1
Microsoft Windows Server 2008=sp2
Microsoft Windows Server 2008=r2-sp1
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Windows Server 2016
Microsoft Windows Server 2016=20h2
Microsoft Windows Server 2016=2004
Microsoft Windows Server 2019
Microsoft Windows Server 2022
Microsoft Windows Server 2012<6.2.9200.23462
6.2.9200.23462
Microsoft Windows Server 2012 R2<6.3.9600.20120
6.3.9600.20120
Microsoft Windows Server 2008<6.0.6003.21218
6.0.6003.21218
Microsoft Windows Server 2008<6.0.6003.21218
6.0.6003.21218
Microsoft Windows Server 2008 R2<6.1.7601.25712
6.1.7601.25712
Microsoft Windows Server 2012 R2<6.3.9600.20120
6.3.9600.20120
Microsoft Windows Server 2008 R2<6.1.7601.25712
6.1.7601.25712
Microsoft Windows RT 8.1<6.3.9600.20120
6.3.9600.20120
Microsoft Windows Server 2008<6.0.6003.21218
6.0.6003.21218
Microsoft Windows Server 2012<6.2.9200.23462
6.2.9200.23462
Microsoft Windows Server 2008<6.0.6003.21218
6.0.6003.21218
Microsoft Windows 7<6.1.7601.25712
6.1.7601.25712
Microsoft Windows 7<6.1.7601.25712
6.1.7601.25712
Microsoft Windows 8.1 for 32-bit systems<6.3.9600.20120
6.3.9600.20120
Microsoft Windows Server 2016<10.0.14393.4651
10.0.14393.4651
Microsoft Windows 10=1607
10.0.14393.4651
Microsoft Windows Server 2016<10.0.14393.4651
10.0.14393.4651
Microsoft Windows 10=1607
10.0.14393.4651
Microsoft Windows 8.1 for x64-based systems<6.3.9600.20120
6.3.9600.20120
Microsoft Windows Server=20H2
10.0.19042.1237
Microsoft Windows 10<10.0.10240.19060
10.0.10240.19060
Microsoft Windows 10<10.0.10240.19060
10.0.10240.19060
Microsoft Windows 10=20H2
10.0.19042.1237
Microsoft Windows 10=2004
10.0.19041.1237
Microsoft Windows Server=2004
10.0.19041.1237
Microsoft Windows 10=20H2
10.0.19042.1237
Microsoft Windows 10=2004
10.0.19041.1237
Microsoft Windows Server 2022<10.0.20348.230
10.0.20348.230
Microsoft Windows 10=2004
10.0.19041.1237
Microsoft Windows 10=21H1
10.0.19043.1237
Microsoft Windows Server 2022<10.0.20348.230
10.0.20348.230
Microsoft Windows 10=21H1
10.0.19043.1237
Microsoft Windows Server 2019<10.0.17763.2183
10.0.17763.2183
Microsoft Windows 10=1909
10.0.18363.1801
Microsoft Windows 10=1909
10.0.18363.1801
Microsoft Windows 10=1909
10.0.18363.1801
Microsoft Windows 10=21H1
10.0.19043.1237
Microsoft Windows Server 2019<10.0.17763.2183
10.0.17763.2183
Microsoft Windows 10=1809
10.0.17763.2183
Microsoft Windows 10=1809
10.0.17763.2183
Microsoft Windows 10=1809
10.0.17763.2183

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.2.9200.23462Patch KB5005607
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.0.6003.21218Patch KB5005618
  3. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.3.9600.20120Patch KB5005627
  4. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.1.7601.25712Patch KB5005615
  5. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.3.9600.20120Patch KB5005613
  6. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.14393.4651Patch KB5005573
  7. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.19042.1237Patch KB5005565
  8. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.10240.19060Patch KB5005569
  9. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.19041.1237Patch KB5005565
  10. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.20348.230Patch KB5005575
  11. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.19043.1237Patch KB5005565
  12. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.17763.2183Patch KB5005568
  13. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.18363.1801Patch KB5005566

Event History

Sep 14, 2021
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Description
Sep 15, 2021
CVE Published
via MITRE·11:23 AM
Data Sourced
via MITRE·11:23 AM
DescriptionSeverity
Data Sourced
via NVD·12:15 PM
RemedyDescriptionSeverityAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2021-38635?

CVE-2021-38635 has a severity rating of Important, indicating a significant risk of information disclosure.

2

How do I fix CVE-2021-38635?

To fix CVE-2021-38635, apply the latest security updates provided by Microsoft for the affected Windows versions.

3

What systems are affected by CVE-2021-38635?

CVE-2021-38635 affects multiple versions of Windows, including Windows 10, Windows 7, Windows 8.1, and various Windows Server editions.

4

Can CVE-2021-38635 lead to data breaches?

Yes, CVE-2021-38635 may lead to unauthorized access to sensitive information, potentially resulting in data breaches.

5

Is CVE-2021-38635 being actively exploited?

There have been indications that CVE-2021-38635 could be exploited in the wild, urging users to apply patches promptly.

Contact

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