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MicrosoftCVE-2021-26423

HistoryAug 12, 2021 - 6:15 p.m.

CVE-2021-26423

2021-08-1218:15:08

microsoft

web.nvd.nist.gov

151

.net core

visual studio

dos

vulnerability

cve-2021-26423

nvd

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

7.2

Confidence

High

EPSS

0.002

Percentile

57.1%

JSON

.NET Core and Visual Studio Denial of Service Vulnerability

Affected configurations

Nvd

Vulners

Node

microsoft.netRange5.0–5.0.8

microsoft.net_coreRange2.1–2.1.28

microsoft.net_coreRange3.1–3.1.17

microsoftpowershell_coreRange7.0–7.0.7

microsoftpowershell_coreRange7.1–7.1.4

microsoftvisual_studio_2017Range15.0–15.9

microsoftvisual_studio_2019Range16.0–16.10

microsoftvisual_studio_2019Match8.10macos

VendorProductVersionCPE
microsoft.net*cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
microsoft.net_core*cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*
microsoftpowershell_core*cpe:2.3:a:microsoft:powershell_core:*:*:*:*:*:*:*:*
microsoftvisual_studio_2017*cpe:2.3:a:microsoft:visual_studio_2017:*:*:*:*:*:*:*:*
microsoftvisual_studio_2019*cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*
microsoftvisual_studio_20198.10cpe:2.3:a:microsoft:visual_studio_2019:8.10:*:*:*:*:macos:*:*

Vendor	Product	Version	CPE
microsoft	.net	*	cpe:2.3:a:microsoft:.net::::::::
microsoft	.net_core	*	cpe:2.3:a:microsoft:.net_core::::::::
microsoft	powershell_core	*	cpe:2.3:a:microsoft:powershell_core::::::::
microsoft	visual_studio_2017	*	cpe:2.3:a:microsoft:visual_studio_2017::::::::
microsoft	visual_studio_2019	*	cpe:2.3:a:microsoft:visual_studio_2019::::::::
microsoft	visual_studio_2019	8.10	cpe:2.3:a:microsoft:visual_studio_2019:8.10:::::macos::

CNA Affected

[
  {
    "vendor": "Microsoft",
    "product": "Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)",
    "cpes": [
      "cpe:2.3:a:microsoft:visual_studio_2017:*:*:*:*:*:*:*:*"
    ],
    "platforms": [
      "Unknown"
    ],
    "versions": [
      {
        "version": "15.9.0",
        "lessThan": "15.9.38",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)",
    "cpes": [
      "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*"
    ],
    "platforms": [
      "Unknown"
    ],
    "versions": [
      {
        "version": "16.0",
        "lessThan": "16.4.25",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)",
    "cpes": [
      "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*"
    ],
    "platforms": [
      "Unknown"
    ],
    "versions": [
      {
        "version": "16.0.0",
        "lessThan": "16.7.18",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)",
    "cpes": [
      "cpe:2.3:a:microsoft:visual_studio_2019:16.9:*:*:*:*:*:*:*"
    ],
    "platforms": [
      "Unknown"
    ],
    "versions": [
      {
        "version": "15.0.0",
        "lessThan": "16.9.10",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Visual Studio 2019 version 16.10 (includes 16.0 - 16.9)",
    "cpes": [
      "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*"
    ],
    "platforms": [
      "Unknown"
    ],
    "versions": [
      {
        "version": "16.10.0",
        "lessThan": "16.10.5",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Visual Studio 2019 for Mac version 8.10",
    "cpes": [
      "cpe:2.3:a:microsoft:visual_studio_2019:8.10:*:*:*:*:macos:*:*"
    ],
    "platforms": [
      "Unknown"
    ],
    "versions": [
      {
        "version": "8.1.0",
        "lessThan": "8.10.7",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": ".NET Core 2.1",
    "cpes": [
      "cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*"
    ],
    "platforms": [
      "Unknown"
    ],
    "versions": [
      {
        "version": "2.1",
        "lessThan": "2.1.30",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": ".NET Core 3.1",
    "cpes": [
      "cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*"
    ],
    "platforms": [
      "Unknown"
    ],
    "versions": [
      {
        "version": "3.1",
        "lessThan": "3.1.18",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": ".NET 5.0",
    "cpes": [
      "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*"
    ],
    "platforms": [
      "Unknown"
    ],
    "versions": [
      {
        "version": "5.0.0",
        "lessThan": "5.0.9",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "PowerShell Core 7.1",
    "cpes": [
      "cpe:2.3:a:microsoft:powershell_core:*:*:*:*:*:*:*:*"
    ],
    "platforms": [
      "Unknown"
    ],
    "versions": [
      {
        "version": "7.1.0",
        "lessThan": "7.1.4",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "PowerShell Core 7.0",
    "cpes": [
      "cpe:2.3:a:microsoft:powershell_core:*:*:*:*:*:*:*:*"
    ],
    "platforms": [
      "Unknown"
    ],
    "versions": [
      {
        "version": "7.0.0",
        "lessThan": "7.0.7",
        "versionType": "custom",
        "status": "affected"
      }
    ]
  }
]