Summary
Impact: Security Feature Bypass. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
What kind of security feature could be bypassed by successfully exploiting this vulnerability?
An unauthenticated attacker could bypass validations on Blazor Server forms.
How could an attacker exploit this vulnerability?
To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then trigger an event that could exploit the vulnerability to save an invalid state to a database or trigger other unintended actions, depending on what functionality the form provides.
Security updates
6.0.25 — https://support.microsoft.com/help/5032883
6.0.25 — https://github.com/dotnet/announcements/issues/288
7.0.14 — https://support.microsoft.com/help/5032884
17.2.22 — https://docs.microsoft.com/en-us/visualstudio/releases/2022/release-notes
17.4.14 — https://learn.microsoft.com/en-us/visualstudio/releases/2022/release-notes
8.0.0 — https://github.com/dotnet/announcements/issues/TBD
Vulnerabilities 1
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Medium 6.2
ASP.NET Core Security Feature Bypass Vulnerability
ASP.NET Core Security Feature Bypass Vulnerability
Revision history
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#3
Corrected Article links in the Security Updates table. This is an informational change only.
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#2
Updated acknowledgment. This is an informational change only.
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#1
Information published.
References
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CVE-2023-36558 ASP.NET Core Security Feature Bypass Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36558
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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