CVE-2023-35391 Explained : Impact and Mitigation
Learn about CVE-2023-35391, a medium-severity vulnerability affecting Microsoft Visual Studio 2022, ASP.NET Core, .NET 6.0, and .NET 7.0. Find out the impact, affected systems, and mitigation steps.
This article provides detailed information about the ASP.NET Core SignalR and Visual Studio Information Disclosure Vulnerability, tracked under CVE-2023-35391.
Understanding CVE-2023-35391
This section delves into the nature and impact of the CVE-2023-35391 vulnerability.
What is CVE-2023-35391?
The CVE-2023-35391 vulnerability involves an information disclosure issue in ASP.NET Core SignalR and Visual Studio. This vulnerability could potentially expose sensitive information to unauthorized parties.
The Impact of CVE-2023-35391
The impact of CVE-2023-35391 is rated as MEDIUM by the CVSS base score, with a score of 6.2. This vulnerability could lead to confidential data being accessed by unauthorized users.
Technical Details of CVE-2023-35391
In this section, we explore the specific technical details of the CVE-2023-35391 vulnerability.
Vulnerability Description
The vulnerability stems from an information disclosure flaw within ASP.NET Core SignalR and Visual Studio, potentially allowing attackers to access sensitive data.
Affected Systems and Versions
The following systems are affected by CVE-2023-35391:
- Microsoft Visual Studio 2022 version 17.2 (less than 17.2.18)
- Microsoft Visual Studio 2022 version 17.4 (less than 17.4.10)
- Microsoft Visual Studio 2022 version 17.6 (less than 17.6.6)
- ASP.NET Core 2.1 (less than 2.1.40)
- .NET 6.0 (less than 6.0.21)
- .NET 7.0 (less than 7.0.10)
Exploitation Mechanism
Attackers could potentially exploit this vulnerability to gain unauthorized access to sensitive information, impacting the confidentiality of the affected systems.
Mitigation and Prevention
This section outlines the necessary steps to mitigate the risks posed by CVE-2023-35391.
Immediate Steps to Take
- Users are advised to update Microsoft Visual Studio and related frameworks to the patched versions to prevent exploitation of this vulnerability.
Long-Term Security Practices
In the long term, organizations should prioritize regular security updates and assessments to identify and address potential vulnerabilities proactively.
Patching and Updates
Ensure that all affected systems are promptly patched with the latest security updates provided by Microsoft to mitigate the risks associated with CVE-2023-35391.