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CVE-2020-1045— Microsoft ASP.NET Core Security Feature Bypass Vulnerability

Quick assessment

Affected
Microsoft ASP.NET Core 2.1
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft .NET Core和Microsoft ASP.NET Core都是美国微软（Microsoft）公司的产品。.NET Core是一套免费的开源开发平台。该平台具有多语言支持和跨平台等特点。Microsoft ASP.NET Core是一框跨平台开源框架。该框架用于构建Web应用、物联网应用和移动后端等基于云的应用程序。 Microsoft .NET Core和Microsoft ASP.NET Core 中存在安全漏洞。该漏洞源于ASP.NET Core cookie 解析器对整个

CVSS 7.5 · High EPSS 5.97% · P93

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2020-1045

Vulnerability Information
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Vulnerability Title
Microsoft ASP.NET Core Security Feature Bypass Vulnerability
Source: CVE Program / CVE List V5
Vulnerability 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>
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft .NET Core和Microsoft ASP.NET Core 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft .NET Core和Microsoft ASP.NET Core都是美国微软（Microsoft）公司的产品。.NET Core是一套免费的开源开发平台。该平台具有多语言支持和跨平台等特点。Microsoft ASP.NET Core是一框跨平台开源框架。该框架用于构建Web应用、物联网应用和移动后端等基于云的应用程序。 Microsoft .NET Core和Microsoft ASP.NET Core 中存在安全漏洞。该漏洞源于ASP.NET Core cookie 解析器对整个
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft ASP.NET Core 2.1 2.0 ~ publication cpe:2.3:a:microsoft:asp.net_core:2.1*:*:*:*:*:*:*:*
Microsoft ASP.NET Core 3.1 3.0 ~ publication cpe:2.3:a:microsoft:asp.net_core:3.1:*:*:*:*:*:*:*

II. Public POCs for CVE-2020-1045

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III. Intelligence Information for CVE-2020-1045

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Vendor Advisories for CVE-2020-1045 (3)

Mailing List Discussions for CVE-2020-1045 (2)

Other References for CVE-2020-1045 (1)

Same Patch Batch · Microsoft · 2020-09-11 · 129 CVEs total

CVE-2020-1595 9.9 CRITICAL Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2020-1210 9.9 CRITICAL Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2020-1523 8.9 HIGH Microsoft SharePoint Server Tampering Vulnerability
CVE-2020-0761 8.8 HIGH Active Directory Remote Code Execution Vulnerability
CVE-2020-1129 8.8 HIGH Microsoft Windows Codecs Library Remote Code Execution Vulnerability
CVE-2020-1012 8.8 HIGH WinINet API Elevation of Privilege Vulnerability
CVE-2020-0718 8.8 HIGH Active Directory Remote Code Execution Vulnerability
CVE-2020-0922 8.8 HIGH Microsoft COM for Windows Remote Code Execution Vulnerability
CVE-2020-1453 8.6 HIGH Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2020-1200 8.6 HIGH Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2020-1452 8.6 HIGH Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2020-1460 8.6 HIGH Microsoft SharePoint Server Remote Code Execution Vulnerability
CVE-2020-1576 8.5 HIGH Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2020-16875 8.4 HIGH Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2020-1285 8.4 HIGH GDI+ Remote Code Execution Vulnerability
CVE-2020-1507 7.9 HIGH Microsoft COM for Windows Elevation of Privilege Vulnerability
CVE-2020-1098 7.8 HIGH Windows Shell Infrastructure Component Elevation of Privilege Vulnerability
CVE-2020-1053 7.8 HIGH DirectX Elevation of Privilege Vulnerability
CVE-2020-1074 7.8 HIGH Jet Database Engine Remote Code Execution Vulnerability
CVE-2020-1052 7.8 HIGH Windows Elevation of Privilege Vulnerability

Showing top 20 of 129 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: ASP.NET Core 2.1
Same vendor: Microsoft

V. Comments for CVE-2020-1045

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