ROSLYN.SECURITY.CA5389 : Do Not Add Archive Item's Path To The Target File System Path (C#)

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ROSLYN.SECURITY.CA5389 : Do Not Add Archive Item's Path To The Target File System Path (C#)

Summary

When extracting files from an archive and using the archive item's path, check if the path is safe. Archive path can be relative and can lead to file system access outside of the expected file system target path, leading to malicious config changes and remote code execution via lay-and-wait technique.

This check corresponds to Roslyn rule CA5389. For full rule details, see the Microsoft website: CA5389.

Properties

Class Name	Do Not Add Archive Item's Path To The Target File System Path (C#)
Significance	security
Mnemonic	ROSLYN.SECURITY.CA5389
Categories	None
Availability	Available for C# only.
Enabling	Checks for this warning class are disabled by default. To enable them, add the following WARNING_FILTER rule to the project configuration file. WARNING_FILTER += allow class="Do Not Add Archive Item's Path To The Target File System Path (C#)"

Relevant Configuration File Parameters

The following configuration file parameters affect checks for this warning class.