Vulnerability-Lookup

BDU:2021-04773

Vulnerability from fstec - Published: 10.08.2021

Title

Уязвимость программного средства .NET Core, расширяемого средства автоматизации PowerShell Core и средства разработки программного обеспечения Visual Studio, связанная с недостаточной проверкой вводимых данных, позволяющая нарушителю вызвать отказ в обслуживании

Description

Уязвимость программного средства .NET Core, расширяемого средства автоматизации PowerShell Core и средства разработки программного обеспечения Visual Studio связана с недостаточной проверкой вводимых данных. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, вызвать отказ в обслуживании

Severity ?


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

Vendor

Microsoft Corp

Software Name

.NET Core, Microsoft Visual Studio 2019, PowerShell Core, Microsoft Visual Studio 2017

Software Version

2.1 (.NET Core), 3.1 (.NET Core), 5.0 (.NET Core), от 16.0 до 16.3 включительно (Microsoft Visual Studio 2019), от 16.0 до 16.6 включительно (Microsoft Visual Studio 2019), 7.0 (PowerShell Core), 7.1 (PowerShell Core), от 16.0 до 16.8 включительно (Microsoft Visual Studio 2019), от 16.0 до 16.9 включительно (Microsoft Visual Studio 2019), 8.10 (Microsoft Visual Studio 2019), от 15.0 до 15.8 включительно (Microsoft Visual Studio 2017)

Possible Mitigations

Использование рекомендаций: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26423

Reference

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26423 https://www.cybersecurity-help.cz/vdb/SB2021081011

CWE

CWE-20

JSON

To clipboard

{
  "CVSS 2.0": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
  "CVSS 3.0": "AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "TO708, TO711, TO712, TO714, TO715, TO716",
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": "TO708 \u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 Visual Studio 2019 16.11.30, TO711 \u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 Visual Studio 2019 16.4.27, TO712 \u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 Visual Studio 2019 16.7.27, TO714 \u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 Visual Studio 2019 16.9.26, TO715 \u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 Visual Studio 2019 16.10.5, TO716 \u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 Visual Studio 2019 16.11.21",
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Microsoft Corp",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "2.1 (.NET Core), 3.1 (.NET Core), 5.0 (.NET Core), \u043e\u0442 16.0 \u0434\u043e 16.3 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Microsoft Visual Studio 2019), \u043e\u0442 16.0 \u0434\u043e 16.6 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Microsoft Visual Studio 2019), 7.0 (PowerShell Core), 7.1 (PowerShell Core), \u043e\u0442 16.0 \u0434\u043e 16.8 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Microsoft Visual Studio 2019), \u043e\u0442 16.0 \u0434\u043e 16.9 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Microsoft Visual Studio 2019), 8.10 (Microsoft Visual Studio 2019), \u043e\u0442 15.0 \u0434\u043e 15.8 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Microsoft Visual Studio 2017)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\nhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26423",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "10.08.2021",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "29.09.2021",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "29.09.2021",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2021-04773",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2021-26423",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": ".NET Core, Microsoft Visual Studio 2019, PowerShell Core, Microsoft Visual Studio 2017",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": null,
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 .NET Core, \u0440\u0430\u0441\u0448\u0438\u0440\u044f\u0435\u043c\u043e\u0433\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0437\u0430\u0446\u0438\u0438 PowerShell Core \u0438 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Visual Studio, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u0430\u044f \u0441 \u043d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u043e\u0439 \u0432\u0432\u043e\u0434\u0438\u043c\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u041d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u0430\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0430 \u0432\u0432\u043e\u0434\u0438\u043c\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 (CWE-20)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 .NET Core, \u0440\u0430\u0441\u0448\u0438\u0440\u044f\u0435\u043c\u043e\u0433\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0437\u0430\u0446\u0438\u0438 PowerShell Core \u0438 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Visual Studio \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u043e\u0439 \u0432\u0432\u043e\u0434\u0438\u043c\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0435\u043d\u043d\u043e, \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u0441\u0443\u0440\u0441\u0430\u043c\u0438",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26423\nhttps://www.cybersecurity-help.cz/vdb/SB2021081011",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041f\u0440\u0438\u043a\u043b\u0430\u0434\u043d\u043e\u0435 \u041f\u041e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-20",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 5)\n\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 7,5)"
}

CVE-2021-26423 (GCVE-0-2021-26423)

Vulnerability from cvelistv5 – Published: 2021-08-12 18:11 – Updated: 2024-08-03 20:26

Title

.NET Core and Visual Studio Denial of Service Vulnerability

Summary

.NET Core and Visual Studio Denial of Service Vulnerability

Severity ?

7.5 (High)


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

CWE

Denial of Service

Assigner

microsoft

References

URL

Tags

https://portal.msrc.microsoft.com/en-US/security-…

x_refsource_MISC

Impacted products

Vendor

Product

Version

Microsoft

Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)

Affected: 15.9.0 , < 15.9.38 (custom)
cpe:2.3:a:microsoft:visual_studio_2017:*:*:*:*:*:*:*:*

Microsoft	Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)	Affected: 16.0 , < 16.4.25 (custom) cpe:2.3:a:microsoft:visual_studio_2019::::::::
Microsoft	Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)	Affected: 16.0.0 , < 16.7.18 (custom) cpe:2.3:a:microsoft:visual_studio_2019::::::::
Microsoft	Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)	Affected: 15.0.0 , < 16.9.10 (custom) cpe:2.3:a:microsoft:visual_studio_2019:16.9:::::::*
Microsoft	Microsoft Visual Studio 2019 version 16.10 (includes 16.0 - 16.9)	Affected: 16.10.0 , < 16.10.5 (custom) cpe:2.3:a:microsoft:visual_studio_2019::::::::
Microsoft	Visual Studio 2019 for Mac version 8.10	Affected: 8.1.0 , < 8.10.7 (custom) cpe:2.3:a:microsoft:visual_studio_2019:8.10:::::macos::
Microsoft	.NET Core 2.1	Affected: 2.1 , < 2.1.30 (custom) cpe:2.3:a:microsoft:.net_core::::::::
Microsoft	.NET Core 3.1	Affected: 3.1 , < 3.1.18 (custom) cpe:2.3:a:microsoft:.net_core::::::::
Microsoft	.NET 5.0	Affected: 5.0.0 , < 5.0.9 (custom) cpe:2.3:a:microsoft:.net::::::::
Microsoft	PowerShell Core 7.1	Affected: 7.1.0 , < 7.1.4 (custom) cpe:2.3:a:microsoft:powershell_core::::::::
Microsoft	PowerShell Core 7.0	Affected: 7.0.0 , < 7.0.7 (custom) cpe:2.3:a:microsoft:powershell_core::::::::

Date Public ?

2021-08-10 07:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T20:26:25.161Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26423"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:microsoft:visual_studio_2017:*:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "15.9.38",
              "status": "affected",
              "version": "15.9.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "16.4.25",
              "status": "affected",
              "version": "16.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft Visual Studio 2019 version 16.7 (includes 16.0 \u2013 16.6)",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "16.7.18",
              "status": "affected",
              "version": "16.0.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:visual_studio_2019:16.9:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "16.9.10",
              "status": "affected",
              "version": "15.0.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft Visual Studio 2019 version 16.10 (includes 16.0 - 16.9)",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "16.10.5",
              "status": "affected",
              "version": "16.10.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:visual_studio_2019:8.10:*:*:*:*:macos:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "Visual Studio 2019 for Mac version 8.10",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "8.10.7",
              "status": "affected",
              "version": "8.1.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": ".NET Core 2.1",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "2.1.30",
              "status": "affected",
              "version": "2.1",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": ".NET Core 3.1",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "3.1.18",
              "status": "affected",
              "version": "3.1",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": ".NET 5.0",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "5.0.9",
              "status": "affected",
              "version": "5.0.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:powershell_core:*:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "PowerShell Core 7.1",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "7.1.4",
              "status": "affected",
              "version": "7.1.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:powershell_core:*:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "PowerShell Core 7.0",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "7.0.7",
              "status": "affected",
              "version": "7.0.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2021-08-10T07:00:00.000Z",
      "descriptions": [
        {
          "lang": "en-US",
          "value": ".NET Core and Visual Studio Denial of Service Vulnerability"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Denial of Service",
              "lang": "en-US",
              "type": "Impact"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-12-28T19:53:54.266Z",
        "orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
        "shortName": "microsoft"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26423"
        }
      ],
      "title": ".NET Core and Visual Studio Denial of Service Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
    "assignerShortName": "microsoft",
    "cveId": "CVE-2021-26423",
    "datePublished": "2021-08-12T18:11:31.000Z",
    "dateReserved": "2021-01-29T00:00:00.000Z",
    "dateUpdated": "2024-08-03T20:26:25.161Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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

BDU:2021-04773

CVE-2021-26423 (GCVE-0-2021-26423)

Tags

Sightings

Nomenclature