Sep 2020: Microsoft ASP.NET Core Security Feature Bypass Vulnerability
CVE-2020-1045 Published on September 11, 2020
Microsoft ASP.NET Core Security Feature Bypass Vulnerability
<p>A security feature bypass vulnerability exists in the way Microsoft ASP.NET Core parses encoded cookie names.</p>
<p>The ASP.NET Core cookie parser decodes entire cookie strings which could allow a malicious attacker to set a second cookie with the name being percent encoded.</p>
<p>The security update addresses the vulnerability by fixing the way the ASP.NET Core cookie parser handles encoded names.</p>
Products Associated with CVE-2020-1045
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Affected Versions
Microsoft ASP.NET Core 2.1:- Version 2.0 and below publication is affected.
- Version 3.0 and below publication is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.