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Wasfi_Bounni's avatar
Wasfi_Bounni
Icon for Cirrocumulus rankCirrocumulus
Mar 03, 2021
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Http requests with the question mark symbol "?" in the URL are not being blocked although disallowed in the URL character list

Hi;

 

Http requests with the question mark symbol "?" in the URL are not being blocked although "?" isdisallowed in the URL character list.

 

for example http://www.xyx.com/?/file.extension

 

Kindly

Wasfi

  • You would either do that in an irule (on HTTP_REQUEST)

     

    Or look at the

    Security  ››  Application Security : Parameters : Parameters List  ››  Parameter Properties

    for the * (wildcard) parameter

     

    In the Name Meta Characters tab, select

    Check characters on this parameter name

     

    / is already disallowed in the metacharacters

3 Replies

  • Thank you Simon. My aim is to block a URL that have the quetion mark in the manner asked. i.e. followed by any / character. However, if the question mark comes after the final / in the URL path, then I want it to be allowed: For example: http://www.xyz.com/abc/klm/file.php?

     

    As I said, the question mark symbol is disallowed in the ASM policy under the URL character set section.

     

    Kindly

    Wasfi

    • Simon_Blakely's avatar
      Simon_Blakely
      Icon for Employee rankEmployee

      You would either do that in an irule (on HTTP_REQUEST)

       

      Or look at the

      Security  ››  Application Security : Parameters : Parameters List  ››  Parameter Properties

      for the * (wildcard) parameter

       

      In the Name Meta Characters tab, select

      Check characters on this parameter name

       

      / is already disallowed in the metacharacters