CVE-2020-1045high

CVE-2020-1045: high-severity vulnerability in Microsoft ASP.NET Core 2.1

Microsoft ASP.NET Core Security Feature Bypass Vulnerability

Published · Updated

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.5epss 5.9%
<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>
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:P/RL:O/RC:C
Affected products
Microsoft · ASP.NET Core 2.1Microsoft · ASP.NET Core 3.1
Related CVEs — Microsoft ASP.NET Core 2.1

In the same product, most dangerous first.

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