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  • Faraz Ahmed 2 posts 72 karma points
    Dec 14, 2020 @ 11:46
    Faraz Ahmed
    0

    Verbose Error Message

    Using Umbraco And Getting Started
    Umbraco 7

    Hi Team,

    We have developed website using Umbraco version 8, now before deploy on Production server our client ran the security Scan using Qualys Security Tool.

    Now the report showing the Verbose Error Message vulnerability by hitting the below URL and also website is getting crashed when we put the same URL on browser. enter image description here

    I also set the disableAlternativeTemplates="true" property to true and assuming the browser should show the 404 custom page.

    My working page URL is http://localhost:97/en/myparkservice

    Any help would be highly appreciated.

    Thanks

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  • Huw Reddick 1737 posts 6098 karma points MVP c-trib
    Dec 16, 2020 @ 09:09
    Huw Reddick
    0

    You need to set the customErrors mode to either "On" or "RemoteOnly" in your web.config file

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  • Faraz Ahmed 2 posts 72 karma points
    Dec 16, 2020 @ 11:04
    Faraz Ahmed
    0

    Hi Huw Reddick,

    Thank you for your reply, I have already set the customErrors to "RemoteOnly" and from out site the server it is showing the 505 custom Page which is fine. But I am assuming that this should return the 404 Error page note found message instead of 505 internal server issue. enter image description here

    Can you please assist.

    Thanks.

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  • Huw Reddick 1737 posts 6098 karma points MVP c-trib
    Dec 16, 2020 @ 11:18
    Huw Reddick
    0

    I would change your custom error to this

    The error you are getting is coming from the IIS pipeline rather than Umbraco, to trap it nicely you need to add the following error handler

    <system.webserver>
    <httpErrors errorMode="RemoteOnly" existingResponse="Replace">
      <remove statusCode="500" />
      <error statusCode="500" path="error-500.html" responseMode="File" />
    </httpErrors>
</system.webserver>

    It is not reaching the system.web handler because that is errored before getting to that handler.

    do not us a relative url like ~/ place the html error file in the root of your site.

    However, you really should try to work out what is causing the error and fix it rather than just hide it.

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  • Huw Reddick 1737 posts 6098 karma points MVP c-trib
    Dec 16, 2020 @ 11:47
    Huw Reddick
    0

    oops sorry the errorMode should be DetailedLocalOnly or Custom not RemoteOnly

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  • lori ryan 239 posts 573 karma points
    Jun 25, 2021 @ 13:25
    lori ryan
    0

    Hi Getting this problem as well have the following in my system.webserver

       <httpErrors errorMode="Custom">
      <remove statusCode="500" subStatusCode="-1" />
      <error statusCode="500" path="500.aspx" responseMode="ExecuteURL" />
    </httpErrors>

    I tried with the above however when I ran the qualys scan the errors remained.

    <httpErrors errorMode="RemoteOnly" existingResponse="Replace">
      <remove statusCode="500" />
      <error statusCode="500" path="500.html" responseMode="File" />
</httpErrors>

    When I then tried with the above and tried to generate a 500 say

    www.mydomain.com/</script

    I got bad request it didnt genearte my custom 500 page. Any pointers would be fanastic if you got this sorted.

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  • Huw Reddick 1737 posts 6098 karma points MVP c-trib
    Jun 25, 2021 @ 16:48
    Huw Reddick
    0

    Do you have a customerrors defined as well?

    Not at my PC currently, but will post my errors sections later

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  • Huw Reddick 1737 posts 6098 karma points MVP c-trib
    Jun 26, 2021 @ 07:10
    Huw Reddick
    0

    These are the error sections in my web.config

    <customErrors mode="On" defaultRedirect="/error500" redirectMode="ResponseRewrite">
  <error statusCode="403" redirect="/Forbidden" />
  <error statusCode="500" redirect="/Error500" />
  <error statusCode="503" redirect="/UnderMaintenance" />
</customErrors>

<httpErrors errorMode="Custom" existingResponse="Replace">
  <remove statusCode="403" />
  <remove statusCode="404" />
  <remove statusCode="500" />
  <error statusCode="403" prefixLanguageFilePath="" path="/Forbidden" responseMode="ExecuteURL" />
  <error statusCode="404" prefixLanguageFilePath="" path="/error404" responseMode="ExecuteURL" />
  <error statusCode="500" prefixLanguageFilePath="" path="/error500" responseMode="ExecuteURL" />
  <error statusCode="503" prefixLanguageFilePath="" path="/UnderMaintenance" responseMode="ExecuteURL" />
</httpErrors>
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