CVE-2021-34532: ASP.NET Core and Visual Studio Information Disclosure Vulnerability

Published Aug 10, 2021
·
Updated

ASP.NET Core and Visual Studio Information Disclosure Vulnerability

Affected Software

13 affected componentsFixes available
Microsoft ASP.NET Core>=2.1<=2.1.2
Microsoft ASP.NET Core>=3.1<=3.1.17
Microsoft ASP.NET Core>=5.0<=5.0.8
Microsoft Visual Studio 2019>=16.0<=16.10
Microsoft Visual Studio 2019 Macos=8.10
Microsoft Visual Studio 2019 (includes 16.0 - 16.9)=16.10
16.10.5
Microsoft Visual Studio 2019 (includes 16.0 - 16.3)=16.4
16.4.25
Microsoft Visual Studio 2019 (includes 16.0 – 16.6)=16.7
16.7.18
Microsoft ASP.NET Core=2.1
2.1.29
Microsoft ASP.NET Core=3.1
3.1.18
Microsoft Visual Studio 2019 (includes 16.0 - 16.8)=16.9
16.9.10
Microsoft ASP.NET Core=5.0
5.0.9
Microsoft Visual Studio 2019 for Mac=8.10
8.10.7

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 16.4.25
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 16.10.5
  3. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 16.7.18
  4. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 16.9.10
  5. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 2.1.29
  6. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 3.1.18
  7. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 8.10.7
  8. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 5.0.9

Event History

Aug 10, 2021
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Description
Aug 12, 2021
CVE Published
via MITRE·06:12 PM
Data Sourced
via MITRE·06:12 PM
DescriptionSeverity
Data Sourced
via NVD·06:15 PM
RemedyDescriptionSeverityAffected Software

Frequently Asked Questions

1

What is CVE-2021-34532?

CVE-2021-34532 is an Information Disclosure vulnerability in ASP.NET Core and Visual Studio.

2

Which software is affected by CVE-2021-34532?

Microsoft ASP.NET Core versions 2.1, 3.1, and 5.0, as well as Microsoft Visual Studio 2019 versions 16.0 and 16.10 are affected by CVE-2021-34532.

3

What is the severity of CVE-2021-34532?

CVE-2021-34532 has a severity rating of 5.5 (medium).

4

How can I fix the CVE-2021-34532 vulnerability?

To fix the CVE-2021-34532 vulnerability, it is recommended to update to the latest versions of Microsoft ASP.NET Core and Microsoft Visual Studio 2019.

5

Where can I get more information about CVE-2021-34532?

You can find more information about CVE-2021-34532 on the Microsoft Security Portal: [CVE-2021-34532](https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34532).

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