CVE-2021-41355: .NET Core and Visual Studio Information Disclosure Vulnerability

Overview

Severity

Medium (CVSS 5.7)

CVSS Vector

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

Category

Information Disclosure

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2021-Oct

Released

2021-10-12

Last Updated

2021-10-14

EPSS Score

3.61% (percentile: 87.8%)

FAQ

What type of information could be disclosed by this vulnerability? The type of information that could be disclosed if an attacker successfully exploited this vulnerability is sensitive information.

Affected Products (4)

Developer Tools

• PowerShell 7.1
• Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)
• Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10)
• .NET 5.0

Security Updates (4)

• Release Notes
• Release Notes
• Release Notes
• Release Notes

Acknowledgments

Srinivas Nunna of Microsoft

Revision History

• 2021-10-12: Information published.
• 2021-10-14: Revised the Security Updates table to include PowerShell 7.1 because this version of PowerShell 7 incorporates the version of .NET that is affected by this vulnerability. See https://github.com/PowerShell/Announcements/issues/26 for more information.