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Wasfi_Bounni's avatar
Wasfi_Bounni
Icon for Cirrocumulus rankCirrocumulus
Feb 28, 2021
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How can I add an "Illegal Header" in the Advanced WAF.

Hi;

 

How can I add a header to be illegal in the AWAF product, previously ASM.

 

The ASM for instance allows you to manually add "Allowed URLs" and "Disallowed URLs". However, I could only manually add "Allowed Headers" but could not find a way to manually add "Disallowed Headers". I know I can do that in an I-rule, but my aim was to do it in the GUI and return the default block page.

 

 

Kindly

Wasfi

ASM Advanced WAF
security
  • Daniel_Wolf's avatar
    Daniel_Wolf
    Feb 28, 2021

    Hi Wasfi,

     

    you can achieve this by adding the Header name as a custom attacking signature.

    Here is the to the documentation for v14.1:

    Writing Custom Attack Signatures

     

    And here a (not very sophisticated) example: 

    KR

    Daniel

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  • Daniel_Wolf's avatar
    Daniel_Wolf
    Icon for MVP rankMVP
    Feb 28, 2021

    Hi Wasfi,

     

    you can achieve this by adding the Header name as a custom attacking signature.

    Here is the to the documentation for v14.1:

    Writing Custom Attack Signatures

     

    And here a (not very sophisticated) example: 

    KR

    Daniel

    • Wasfi_Bounni's avatar
      Wasfi_Bounni
      Icon for Cirrocumulus rankCirrocumulus
      Mar 01, 2021

      Hi Daniel;

       

      In the above example, I have tried to use a regular expression instead of the contain string criteria, which is ^badheader. This means that the header value string must start with badheader. The issue though is that did not work. I will put this on the forum too.

       

       

      Kindly

      Wasfi