CVE-2020-1045
Microsoft ASP.NET Core Security Feature Bypass Vulnerability
- State
- Published
- Severity
- 7.5 High
- Published
- Sep 11, 2020
- Updated
- Nov 18, 2024
- Reserved
- Nov 4, 2019
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>
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | 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 | microsoft |
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
ASP.NET Core 2.1Microsoft |
|
ASP.NET Core 3.1Microsoft |
|
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1045
- FEDORA-2020-e2deb72e0fvendor-advisory
- FEDORA-2020-48fa1ad65cvendor-advisory
- https://github.com/dotnet/core/blob/main/release-notes/3.1/3.1.8/3.1.8.md#changes-in-318
- https://security.snyk.io/vuln/SNYK-RHEL8-DOTNET-1439600
- https://access.redhat.com/errata/RHSA-2020:3699
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