ROSLYN.SECURITY.CA5400 : Ensure HttpClient certificate revocation list check is not disabled (C#)

JavaScript is not currently enabled, but is required for full CodeSonar manual search and browse functionality.

If you are viewing this file in your hub's Web GUI, enable JavaScript in your browser: you will also need it for GUI functionality.

If you opened this file directly from disk, your browser may be directly suppressing JavaScript functionality: certain browsers perform this suppression on local files (but not files delivered by web servers) for security reasons.

If you access the manual through the hub's Web GUI, the functionality will not be suppressed because the hub is a web server.
Alternatively, your browser may allow you to explicitly disable the security setting that suppresses functionality. See the CodeSonar FAQ for more information.

CodeSonar^® 9.2p0

CONFIDENTIAL

CodeSecure Inc

ROSLYN.SECURITY.CA5400 : Ensure HttpClient certificate revocation list check is not disabled (C#)

Summary

Using HttpClient without providing a platform specific handler (WinHttpHandler or CurlHandler or HttpClientHandler) where the CheckCertificateRevocationList property is set to true, will allow revoked certificates to be accepted by the HttpClient as valid.

This check corresponds to Roslyn rule CA5400. For full rule details, see the Microsoft website: CA5400.

Properties

Class Name	Ensure HttpClient certificate revocation list check is not disabled (C#)
Significance	security
Mnemonic	ROSLYN.SECURITY.CA5400
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="Ensure HttpClient certificate revocation list check is not disabled (C#)"

Relevant Configuration File Parameters

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