Skip to content
OpenAdvisories
High MSRC-CVE-2021-34485 1 CVE

.NET Core and Visual Studio Information Disclosure Vulnerability

Published Aug 10, 2021 · Updated Aug 19, 2021 · Revision 4

Vendor: Microsoft

Summary

Impact: Information Disclosure. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.

Details

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 the contents of a specific dump file. The attacker needs to have local access to the target system and the dump file needs to be created in a specific way by a target on that same system.

Security updates
15.9.38 — https://docs.microsoft.com/en-us/visualstudio/releasenotes/vs2017-relnotes
16.4.25 — https://docs.microsoft.com/en-us/visualstudio/releases/2019/release-notes-v16.4
16.7.18 — https://docs.microsoft.com/en-us/visualstudio/releases/2019/release-notes-v16.7
16.9.10 — https://docs.microsoft.com/en-us/visualstudio/releases/2019/release-notes-v16.9
16.10.5 — https://docs.microsoft.com/en-us/visualstudio/releases/2019/release-notes-v16.10
7.1.4 — https://github.com/PowerShell/Announcements/issues/24
2.1.30 — https://github.com/dotnet/announcements/issues/196

Vulnerabilities 1

Revision history

  1. #4

    To comprehensively address this vulnerability, Microsoft has released .NET Core 2.1 Build Number 2.1.30. Customers who have downloaded Build 2.1.29 should download and install Build 2.1.30 to be fully protected from this vulnerability.

  2. #3

    Revised the Security Updates table to include PowerShell 7.0 and PowerShell 7.1 because these versions of PowerShell 7 incorporate the versions of .NET Core that are affected by this vulnerability. See [https://github.com/PowerShell/Announcements/issues/24](https://github.com/PowerShell/Announcements/issues/24) for more information.

  3. #1

    Information published.

  4. #2

    In the Security Updates table, added links to the Release Notes. This is an informational change only.

References