Summary
Impact: Remote Code Execution. Microsoft rating: Important. Not known to be exploited, publicly disclosed before the fix — Exploitation Less Likely. Customer action: Required.
Details
According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
Successful exploitation of this vulnerability requires an attacker to win a race condition.
How could an attacker exploit this vulnerability?
An attacker could exploit this by closing an http/3 stream while the request body is being processed leading to a race condition. This could result in remote code execution.
.NET 6.0 was added to the Security Updates table on October 31, 2024 because it is also affected by this vulnerability. Why are the Download and Article links missing for .NET 6.0?
HTTP/3 support was only experimental in .NET 6.0. If you are using .NET 6 you must update your application to .NET 8 to be protected. Experimental features will not be patched if a later runtime includes the feature as non-experimental.
Security updates
8.0.7 — https://support.microsoft.com/help/5041081
17.4.21 — https://learn.microsoft.com/en-us/visualstudio/releases/2022/release-notes
Vulnerabilities 1
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High 8.1
.NET and Visual Studio Remote Code Execution Vulnerability
.NET and Visual Studio Remote Code Execution Vulnerability
Revision history
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#1
Information published.
References
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CVE-2024-35264 .NET and Visual Studio Remote Code Execution Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-35264
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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