cnvd - cnvd-2020-72702

cnvd-2020-72702

Vulnerability from cnvd

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:

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。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

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

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-1045"
    }
  },
  "description": "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\n\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",
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-72702",
  "openTime": "2020-12-18",
  "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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  "serverity": "\u4e2d",
  "submitTime": "2020-09-10",
  "title": "Microsoft .NET Core\u548cASP.NET Core\u5b89\u5168\u529f\u80fd\u7ed5\u8fc7\u6f0f\u6d1e"
}

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

Vulnerability from cvelistv5

Published

2020-09-11 00:00

Modified

2024-11-18 16:25

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

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.

References

▼	URL	Tags
	https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1045
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5LN2FUVBSVPGK7AU3NMLO3YR6CGONQPB/	vendor-advisory
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ASICXQXS4M7MTAF6SGQMCLCA63DLCUT3/	vendor-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

Impacted products

Vendor

Product

Version

▼

Microsoft

ASP.NET Core 2.1

Version: 2.0 < publication
cpe:2.3:a:microsoft:asp.net_core:2.1*:*:*:*:*:*:*:*

Microsoft

ASP.NET Core 3.1

Version: 3.0 < publication
cpe:2.3:a:microsoft:asp.net_core:3.1:*:*:*:*:*:*:*

Show details on NVD website

JSON

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        "metrics": [
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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