Vulnerability-Lookup

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

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    "cve": {
      "cveNumber": "CVE-2020-1045"
    }
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  "number": "CNVD-2020-72702",
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  "patchDescription": "Microsoft .NET Core\u548cMicrosoft ASP.NET Core\u90fd\u662f\u7f8e\u56fd\u5fae\u8f6f\uff08Microsoft\uff09\u516c\u53f8\u7684\u4ea7\u54c1\u3002.NET Core\u662f\u4e00\u5957\u514d\u8d39\u7684\u5f00\u6e90\u5f00\u53d1\u5e73\u53f0\u3002\u8be5\u5e73\u53f0\u5177\u6709\u591a\u8bed\u8a00\u652f\u6301\u548c\u8de8\u5e73\u53f0\u7b49\u7279\u70b9\u3002Microsoft ASP.NET Core\u662f\u4e00\u6846\u8de8\u5e73\u53f0\u5f00\u6e90\u6846\u67b6\u3002\u8be5\u6846\u67b6\u7528\u4e8e\u6784\u5efaWeb\u5e94\u7528\u3001\u7269\u8054\u7f51\u5e94\u7528\u548c\u79fb\u52a8\u540e\u7aef\u7b49\u57fa\u4e8e\u4e91\u7684\u5e94\u7528\u7a0b\u5e8f\u3002\r\n\r\nMicrosoft .NET Core\u548cMicrosoft ASP.NET Core\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8eASP.NET Core cookie\u89e3\u6790\u5668\u5bf9\u6574\u4e2acookie\u5b57\u7b26\u4e32\u8fdb\u884c\u89e3\u7801\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8bbe\u7f6e\u7b2c\u4e8c\u4e2acookie\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
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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

Title

Microsoft ASP.NET Core Security Feature Bypass Vulnerability

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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-01-10 18:21 UTC

CWE

Security Feature Bypass

Assigner

microsoft CNA under the mitre root

CNA scorecard B 82/100 over 3948 records in the last 180 days details

References

6 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

2 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:::::::*

Date Public

2020-09-08 07:00

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2024-08-04T06:25:01.041Z",
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            "url": "https://security.snyk.io/vuln/SNYK-RHEL8-DOTNET-1439600"
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        "metrics": [
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Sightings

Author	Source	Type	Date	Other

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.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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