Asp.net Simulate 500 Error
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How To Trigger 500 Error
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minute: Sign up How to simulate an HTTP 500 error on my ASP.NET app? up vote 12 down vote favorite 5 I want to simulate this error so I can check a generic error page is displayed, not the HTTP 500 one, in light of the recent security vulnerability. We include special processing in the site itself for 404 and 403 so
Mvc Return 500
I want to make sure that errors without special processing work too. asp.net share|improve this question edited Nov 18 '15 at 15:01 pnuts 33.7k63569 asked Sep 20 '10 at 14:43 ger 80116 add a comment| 4 Answers 4 active oldest votes up vote 20 down vote accepted throw new Exception(); This will generate a HTTP 500 share|improve this answer answered Sep 20 '10 at 14:46 Carlos Muñoz 9,23853572 That was exactly was I going to say (: –Erik Escobedo Sep 20 '10 at 14:46 1 Me too :) beat us to it! –Alex KeySmith Sep 20 '10 at 14:47 1 Many thanks, this worked perfectly. –ger Sep 20 '10 at 14:53 add a comment| up vote 2 down vote I think you can do this by overriding page init and adding the 500 status code to the response like the following: protected void Page_Init(object sender, EventArgs e) { Response.Clear(); Response.StatusCode = 500; Response.End(); } Enjoy! share|improve this answer answered Sep 20 '10 at 14:47 Doug 3,6361327 Got StatusCode of 200 with error message when using = th
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Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million asp.net mvc error handling programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to send a Status Code 500 in ASP.Net and still write to the response? up vote 55 down vote http://stackoverflow.com/questions/3752528/how-to-simulate-an-http-500-error-on-my-asp-net-app favorite 10 I have an ASP.Net single-file web service (a .ashx file containing an IHttpHandler implementation) which needs to be able to return errors as responses with 500 Internal Server Error status codes. This is a relatively straightforward thing to do in PHP: header("HTTP/1.1 500 Internal Server Error"); header("Content-Type: text/plain"); echo "Unable to connect to database on $dbHost"; The ASP.Net (C#) equivalent should be: Context.Response.StatusCode = (int)HttpStatusCode.InternalServerError; Context.Response.ContentType = "text/plain"; Context.Response.Write("Unable to connect http://stackoverflow.com/questions/4495961/how-to-send-a-status-code-500-in-asp-net-and-still-write-to-the-response to database on " + dbHost); Of course, this doesn't work as expected; instead, IIS intercepts the 500 status code, trashes whatever I've written to the Response object, and sends either debug info or a custom error page, depending on how the app is configured. My question - how can I suppress this IIS behaviour and send error information directly from my IHttpHandler implementation? This app is a port from PHP; the client-side is already written, so I'm essentially stuck with this spec. Sending errors with a 200 status code sadly doesn't fit the mould. Ideally, I need to control the behaviour programmatically, because this is part of an SDK we want to distribute without any "edit this file" and "change this IIS setting" supplementary instructions. Thanks! Edit: Sorted. Context.Response.TrySkipIisCustomErrors = true was the ticket. Wow. c# asp.net rest ihttphandler share|improve this question edited Nov 19 '15 at 1:32 pnuts 33.7k63569 asked Dec 21 '10 at 3:11 Neil E. Pearson 1,8141815 1 If possible I'd avoid giving out internal info such as the database location on a production site - hackers love getting this stuff, makes their attacks much easier. –devstuff Dec 22 '10 at 4:45 1 Good point, but this is a secured web service, not a website. Database connection isn't even attempted without prev
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to the OWASP Testing Guide Project: https://www.owasp.org/index.php/OWASP_Testing_Project 1 Summary 1.1 Web Server Errors 1.2 Application Server Errors 1.3 Database Errors 2 How to Test 3 Tools 4 References 5 Remediation 5.1 Error Handling in IIS and ASP .net 5.2 Error Handling in Apache 5.3 Error Handling in Tomcat Summary Often, during a penetration test on web applications, we come up against many error codes generated from applications or web servers. It's possible to cause these errors to be displayed by using a particular requests, either specially crafted with tools or created manually. These codes are very useful to penetration testers during their activities, because they reveal a lot of information about databases, bugs, and other technological components directly linked with web applications. This section analyses the more common codes (error messages) and bring into focus their relevance during a vulnerability assessment. The most important aspect for this activity is to focus one's attention on these errors, seeing them as a collection of information that will aid in the next steps of our analysis. A good collection can facilitate assessment efficiency by decreasing the overall time taken to perform the penetration test. Attackers sometimes use search engines to locate errors that disclose information. Searches can be performed to find any erroneous sites as random victims, or it is possible to search for errors in a specific site using the search engine filtering tools as described in 4.2.1 Conduct Search Engine Discovery and Reconnaissance for Information Leakage (OTG-INFO-001) Web Server Errors A common error that we can see during testing is the HTTP 404 Not Found. Often this error code provides useful details about the underlying web server and associated components. For example: Not Found The requested URL /page.html was not found on this server. Apache/2.2.3 (Unix) mod_ssl/2.2.3 OpenSSL/0.9.7g DAV/2 PHP/5.1.2 Server at localhost Port 80 This error message can be generated by requesting a non-existent URL. After the common message that shows a page not found, there is information about web server version, OS, modules and other products used. This information can be very important from an OS and application type and version identification point of view. Other HTTP response codes such as 400 Bad Request, 405 Method Not Allowed, 501 Method Not Implemented, 408 Request Time-out and 505 HTTP Version Not Supported can be forced by an attacker. When receiving specially crafted requests, web servers may provide one of these error codes depending on their HTTP implementation. Testing for disclosed information