cnvd - cnvd-2020-72702

CNVD-2020-72702

Vulnerability from cnvd - Published: 2020-12-18

Title

Microsoft .NET Core和ASP.NET Core安全功能绕过漏洞

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cookie字符串进行解码，攻击者可利用该漏洞设置第二个cookie。

Severity

中

Patch Name

Microsoft .NET Core和ASP.NET Core安全功能绕过漏洞的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，详情请关注厂商主页： https://portal.msrc.microsoft.com/en-us/security-guidance

Reference

https://portal.msrc.microsoft.com/zh-CN/security-guidance/advisory/CVE-2020-1045

Impacted products

Name
['Microsoft ASP.NET Core 2.1', 'Microsoft ASP.NET Core 3.1']

Show details on source website

JSON

To clipboard

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    "cve": {
      "cveNumber": "CVE-2020-1045"
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CVE-2020-1045 (GCVE-0-2020-1045)

Vulnerability from cvelistv5 – Published: 2020-09-11 00:00 – Updated: 2024-11-18 16:25

Summary

A security feature bypass vulnerability exists in the way Microsoft ASP.NET Core parses encoded cookie names. 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. The security update addresses the vulnerability by fixing the way the ASP.NET Core cookie parser handles encoded names.

Severity ?

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

CWE

Security Feature Bypass

Assigner

microsoft

References

URL

Tags

	https://portal.msrc.microsoft.com/en-US/security-…
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
	https://github.com/dotnet/core/blob/main/release-…
	https://security.snyk.io/vuln/SNYK-RHEL8-DOTNET-1439600
	https://access.redhat.com/errata/RHSA-2020:3699

Impacted products

Vendor

Product

Version

Microsoft

ASP.NET Core 2.1

Affected: 2.0 , < publication (custom)
cpe:2.3:a:microsoft:asp.net_core:2.1*:*:*:*:*:*:*:*

Microsoft

ASP.NET Core 3.1

Affected: 3.0 , < publication (custom)
cpe:2.3:a:microsoft:asp.net_core:3.1:*:*:*:*:*:*:*

Show details on NVD website

JSON

To clipboard

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        "providerMetadata": {
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      {
        "metrics": [
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CNVD-2020-72702

CVE-2020-1045 (GCVE-0-2020-1045)

Tags

Sightings

Nomenclature