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High MSRC-CVE-2021-38629 1 CVE

Windows Ancillary Function Driver for WinSock Information Disclosure Vulnerability

Published Sep 14, 2021 · Updated Sep 23, 2021 · Revision 2

Vendor: Microsoft

Summary

Impact: Information Disclosure. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.

Details

What type of information could be disclosed by this vulnerability?
The type of information that could be disclosed if an attacker successfully exploited this vulnerability is uninitialized memory and kernel memory - unintentional read access to memory contents in kernel space from a user mode process.

Security updates
10.0.17763.2183 — https://support.microsoft.com/help/5005568
10.0.18363.1801 — https://support.microsoft.com/help/5005566
10.0.19043.1237 — https://support.microsoft.com/help/5005565
10.0.20348.230 — https://support.microsoft.com/help/5005575
10.0.10240.19060 — https://support.microsoft.com/help/5005569
10.0.14393.4651 — https://support.microsoft.com/help/5005573
6.1.7601.25712 — https://support.microsoft.com/help/5005633
6.1.7601.25712 — https://support.microsoft.com/help/5005615
6.3.9600.20120 — https://support.microsoft.com/help/5005613
6.3.9600.20120 — https://support.microsoft.com/help/5005627
6.0.6003.21218 — https://support.microsoft.com/help/5005606
6.0.6003.21218 — https://support.microsoft.com/help/5005618
6.2.9200.23462 — https://support.microsoft.com/help/5005623
6.2.9200.23462 — https://support.microsoft.com/help/5005607

Vulnerabilities 1

Revision history

  1. #2

    For all CVEs affecting Windows that were released on September 14, 2021: 1) In the Security Updates table, the Build Numbers for KB KB5005565 have been corrected for all affected editions of the following versions of Windows 10: Windows 10, version 2004, all editions; Windows Server, version 2004 (Server Core installation); Windows 10, version 20H2; Windows Server, version 20H2 (Server Core Installation); Windows 10, version 21H1. 2) For CVEs where Windows Server 2022 is affected the links have been updated to point to information related to [5005575](https://support.microsoft.com/en-us/help/5005575). Customers whose Windows devices are configured to receive automatic updates do not need to take any further action.

  2. #1

    Information published.

References