CVE-2023-33127: .NET and Visual Studio Elevation of Privilege Vulnerability

Overview

Severity

High (CVSS 8.1)

CVSS Vector

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

Category

Elevation of Privilege

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2023-Jul

Released

2023-07-11

Last Updated

2023-07-14

EPSS Score

1.54% (percentile: 81.4%)

FAQ

What privileges could be gained by an attacker who successfully exploited the vulnerability? The attacker would gain the rights of the user that is running the affected application. According to the CVSS metric, the attack vector is network (AV:N). How could an attacker exploit this vulnerability? An attacker could exploit this vulnerability by abusing the .NET diagnostics server to gain elevation of privileges. According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? Successful exploitation of this vulnerability requires an attacker to win a race condition and also to take additional actions prior to exploitation to prepare the target environment.

Affected Products (8)

Developer Tools

• .NET 6.0
• .NET 7.0
• Microsoft Visual Studio 2022 version 17.0
• Microsoft Visual Studio 2022 version 17.2
• Microsoft Visual Studio 2022 version 17.4
• Microsoft Visual Studio 2022 version 17.6
• PowerShell 7.2
• PowerShell 7.3

Security Updates (7)

• 5028705
• 5028706
• Release Notes
• Release Notes
• Release Notes
• Release Notes
• Release Notes

Acknowledgments

<a href="https://twitter.com/bohops">Jimmy Bayne</a>

Revision History

• 2023-07-11: Information published.
• 2023-07-14: Revised the Security Updates table to include PowerShell 7.2 and PowerShell 7.3 because these versions of PowerShell 7 are affected by this vulnerability. See https://github.com/PowerShell/Announcements/issues/48 for more information.