What is CVE-2023-35298?

CVE-2023-35298 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. HTTP.sys Denial of Service Vulnerability

Which CVE IDs does CVE-2023-35298 cover?

CVE-2023-35298 covers the following CVE IDs: CVE-2023-35298. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2023-35298?

CVE-2023-35298 has a CVSS v3 base score of 7.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2023-35298?

CVE-2023-35298 affects 6 products, including: Windows 11 Version 22H2 for ARM64-based Systems; Windows 11 Version 22H2 for x64-based Systems; Windows 11 version 21H2 for ARM64-based Systems; Windows 11 version 21H2 for x64-based Systems; Windows Server 2022; and others — see the full list on the advisory page.

CVE-2023-35298HighCVSS 7.5

HTTP.sys Denial of Service Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

July 11, 2023

Last Modified

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🔗 CVE IDs covered (1)

CVE-2023-35298 →

📋 Description

How could an attacker exploit this vulnerability? In most situations, an unauthenticated attacker could send a specially crafted packet to a targeted server utilizing the Server Name Indication (SNI) over HTTP Protocol Stack (http.sys) to process packets, causing a denial of service (DOS).

🎯 Affected products6

Windows 11 Version 22H2 for ARM64-based Systems
Windows 11 Version 22H2 for x64-based Systems
Windows 11 version 21H2 for ARM64-based Systems
Windows 11 version 21H2 for x64-based Systems
Windows Server 2022
Windows Server 2022 (Server Core installation)

✅ Remediation

KB5028171 (Security Update) — fixed build 10.0.20348.1850 KB5028182 (Security Update) — fixed build 10.0.22000.2176 KB5028185 (Security Update) — fixed build 10.0.22621.1992

🔗 References (7)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35298
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5028171
referencehttps://support.microsoft.com/help/5028171
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5028182
referencehttps://support.microsoft.com/help/5028182
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5028185
referencehttps://support.microsoft.com/help/5028185