CSHARP.DEBUG.ID : Exception Information Disclosure (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

CSHARP.DEBUG.ID : Exception Information Disclosure (C#)

Summary

Data from an exception ends up in a web page.

Directly exposing error messages to the end user might expose relevant data about the application's configuration, and this could be exploited by an attacker.

Some operations should not be performed in production code, since they have no effect or have unpredictable effects, or since they might compromise the availability or security of your system.

Properties

Class Name

Exception Information Disclosure (C#)

Significance

security

Mnemonic

CSHARP.DEBUG.ID

Example

public class WebProcessor {
  public void Page_Load(object source, EventArgs e) 
  {
    try {
        Process(Request);
    } catch (Exception e) {
        Response.Write("An error occurred: " + e.Message); // "Exception Information Disclosure (C#)" warning issued here
    }
  }
}

Directly exposing error messages to the end user might expose relevant data about the application's configuration, and this could be exploited by an attacker. The exception should be logged instead, and the error message displayed to the user should be generic, without real information about what happened coming from the exception.

Resolution

Verify if the operation is adequate for production code. Remove it or transform it if that is not the case.

Relevant Configuration File Parameters

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

To report problems with this documentation, please visit https://support.codesecure.com/.