CVE-2021-33785
vulnerability analysis and mitigation

Overview

CVE-2021-33785 is a Windows AF_UNIX Socket Provider Denial of Service vulnerability that was discovered and reported in 2021. The vulnerability was initially recorded on May 28, 2021, and Microsoft released security updates to address this issue in July 2021 (CVE Details).

Technical details

The vulnerability has been assigned a CVSS severity rating of 5.0, indicating a moderate severity level. The attack vector is network-based (AV:N) with low attack complexity (AC:L), requiring no authentication (Au:N), and primarily impacts system availability (A:P) without affecting confidentiality or integrity (Rapid7).

Impact

This vulnerability specifically affects the availability of the system through the Windows AF_UNIX Socket Provider component. When successfully exploited, it can result in a denial of service condition, potentially disrupting system operations (CVE Details).

Mitigation and workarounds

Microsoft has released several security updates to address this vulnerability. The fixes are available through various KB updates including KB5004244 for Windows 10 version 1809 and Windows Server 2019, KB5004245 for version 1909, and KB5004237 for versions 2004, 20H2, and 21H1 (Rapid7).

Additional resources


SourceThis report was generated using AI

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