USN-7210-1: .NET vulnerabilities

16 January 2025

Several security issues were fixed in .NET.

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Releases

Packages

  • dotnet8 - .NET CLI tools and runtime
  • dotnet9 - .NET CLI tools and runtime

Details

It was discovered that .NET did not properly handle input provided to its
Convert.TryToHexString method. An attacker could possibly use this issue
to execute arbitrary code. (CVE-2025-21171)

It was discovered that .NET did not properly handle an integer overflow
when processing certain specially crafted files. An attacker could
possibly use this issue to execute arbitrary code. (CVE-2025-21172)

Daniel Plaisted and Noah Gilson discovered that .NET insecurely handled
temporary file usage which could result in malicious package dependency
injection. An attacker could possibly use this issue to elevate privileges.
(CVE-2025-21173)

It was discovered that .NET did not properly perform input data validation
when processing certain specially crafted files. An attacker could
possibly use this issue to execute arbitrary code. (CVE-2025-21176)

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 24.10
Ubuntu 24.04
Ubuntu 22.04

In general, a standard system update will make all the necessary changes.

References

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Further reading