CVE-2019-0757 : Vulnerability Insights and Analysis

CVE-2019-0757 was published on April 9, 2019, and affects various Microsoft products including Microsoft Visual Studio, .NET Core SDK, NuGet, and Mono Framework.

Understanding CVE-2019-0757

This CVE involves a tampering vulnerability in the NuGet Package Manager for Linux and Mac, allowing an authenticated attacker to modify a NuGet package's folder structure.

What is CVE-2019-0757?

The vulnerability, known as the 'NuGet Package Manager Tampering Vulnerability,' enables an authorized attacker to alter the folder structure of a NuGet package.

The Impact of CVE-2019-0757

The vulnerability could be exploited by an attacker to manipulate the contents of a NuGet package, potentially leading to unauthorized changes or compromises.

Technical Details of CVE-2019-0757

This section provides more technical insights into the CVE.

Vulnerability Description

The NuGet Package Manager for Linux and Mac is susceptible to a tampering vulnerability that allows attackers to modify the folder structure of NuGet packages.

Affected Systems and Versions

Microsoft Visual Studio 2017 for Mac
.NET Core SDK versions 1.1 on .NET Core 1.0, 2.1.500 on .NET Core 2.1, 2.2.100 on .NET Core 2.2, 1.1 on .NET Core 1.1
Nuget versions 4.3.1, 4.4.2, 4.5.2, 4.6.3, 4.7.2, 4.8.2, 4.9.4
Mono Framework versions 5.18.0.223, 5.20.0

Exploitation Mechanism

The vulnerability can be exploited by an authenticated attacker to tamper with the folder structure of NuGet packages, potentially leading to unauthorized modifications.

Mitigation and Prevention

Protecting systems from CVE-2019-0757 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by Microsoft promptly.
Monitor for any unauthorized changes to NuGet packages.

Long-Term Security Practices

Regularly update software and packages to the latest versions.
Implement access controls to restrict unauthorized modifications.

Patching and Updates

Ensure that all affected systems are updated with the latest patches and security fixes to mitigate the tampering vulnerability.