Summary
Impact: Denial of Service. Microsoft rating: Important. Not known to be exploited — Exploitation More Likely. Customer action: Required.
Details
Where can I find more information?
Please see the GitHub Advisory relating to this vulnerability here: https://github.com/microsoft/msquic/security/advisories/GHSA-xh5m-8qqp-c5x7#event-111621
Security updates
17.2.21 — https://docs.microsoft.com/en-us/visualstudio/releases/2022/release-notes
17.4.13 — https://learn.microsoft.com/en-us/visualstudio/releases/2022/release-notes
10.0.20348.2031 — https://support.microsoft.com/help/5031364
10.0.22000.2538 — https://support.microsoft.com/help/5031358
10.0.22621.2428 — https://support.microsoft.com/help/5031354
7.0.13 — https://support.microsoft.com/help/5032875
7.3.9 — https://github.com/PowerShell/Announcements/issues/53
Vulnerabilities 1
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High 7.5CVE-2023-38171 EPSS 71%
Microsoft QUIC Denial of Service Vulnerability
Microsoft QUIC Denial of Service Vulnerability
Revision history
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#3
To comprehensively address CVE-2023-38171, Microsoft released security updates on October 24, 2023 for all affected versions of .NET and Microsoft Visual Studio. Microsoft recommends that customers running any of these products install the updates to be fully protected from the vulnerability. Customers whose systems are configured to receive automatic updates do not need to take any further action.
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#2
Revised the Security Updates table to include PowerShell 7.3 because this version of PowerShell 7 is affected by this vulnerability. See [https://github.com/PowerShell/Announcements/issues/53](https://github.com/PowerShell/Announcements/issues/53) for more information.
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#1
Information published.
References
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CVE-2023-38171 Microsoft QUIC Denial of Service Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-38171
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss