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CVE-2020-1045

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CVE-2020-1045

Published: Sep 11, 2020

Modified: Nov 18, 2024

PUBLISHED

CVSS v3.1

7.5

HIGH

Description

<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>

VendorProductVersions

Microsoft

ASP.NET Core 2.1

affected
2.0 - < publication

Microsoft

ASP.NET Core 3.1

affected
3.0 - < publication

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

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