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omar_padilla's avatar
omar_padilla
Icon for Altocumulus rankAltocumulus
Dec 12, 2019

secure cookies help!!!

 success trying to establish secure cookies for a service that pass through my big-ip eh tried everything, but I can not do it.

 

 

 

Eh tried running an irule with the basic commands to enable the secure cookie but I had no success:

 

HTTP :: cookie secure "PHPSESSID" enable ---> this does not work

 

Then I went a little further capturing the set-cookie header by deleting it and overwriting it with the value of the cookie +; secure +; httponly

 

when HTTP_RESPONSE {

   

  set ck [HTTP :: header values ​​"Set-Cookie"]

  local log0. "header first instance $ ck";

  HTTP :: header remove "Set-Cookie"

  foreach acookie $ ck {

    if {$ acookie starts_with "PHPSESSID"} {

   

    set stringe [string map {PHPSESSID PHPSESSID HttpOnly ""} $ acookie]

     switch -glob $ acookie {

     "*; HttpOnly *" -

     "*; HttpOnly *" {

       HTTP :: header insert "Set-Cookie" "$ stringe Secure; HttpOnly"

     set ck2 [HTTP :: header values ​​"Set-Cookie"]

      

     local log0. "header2 $ ck2";

     

     }

     default {}

    }

     

      

    } else {

    

     set stringes [string map {security security HttpOnly ""} $ acookie]

     switch -glob $ acookie {

     "*; HttpOnly *" -

     "*; HttpOnly *" {

       HTTP :: header insert "Set-Cookie" "$ stringes Secure; HttpOnly"

     set ck3 [HTTP :: header values ​​"Set-Cookie"]

      

     local log0. "headerelse $ ck3";

     

     }

     default {}

    }

    }

  }

 }

 

If I can see that the texts are added in the header but when I do this the cookies do not appear in the browser and of course they are not safe.

 

 

 

I've tried many irules:

 

https://support.f5.com/csp/article/K11324

https://devcentral.f5.com/s/question/0D51T00006i7Wet/how-to-properly-insert-httponly-and-secure-cookie-directives

https://geekflare.com/f5-irule-to-secure-cookie-with-httponly-and-secure/

 

 

 

I am having an observation of the security area that I have to ensure those cookies and I don't know how to do it, since I only have the ASM module I cannot apply a persistence profile and I no longer have options

 

Who has come out?

5 Replies

    • omar_padilla's avatar
      omar_padilla
      Icon for Altocumulus rankAltocumulus

      Thanks for your help, I wanted to know something.

      eh validated that the cookies that the F5 inserts are something like TS00001 TS1552145, in this option that you indicate, can you write those cookies? replace them? What is the exact operation against the cookies it generates automatically?

       

  • Hi

    No the option I mentionned concerns cookies that your bachend application is sending. You can take action on them in ASM. It simply adds SECURE and HTTP Only attributes according to the settings.

     

    Yoann