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NetWork's avatar
NetWork
Icon for Nimbostratus rankNimbostratus
Dec 21, 2020

F5 Cookies - Vulnerabilities

We have a VIP associated with default cookie persistence profile and below iRule configuration.

 

when HTTP_RESPONSE {

  set myValues [HTTP::cookie names]

  foreach mycookies $myValues {

   HTTP::cookie secure $mycookies enable

  }

 

We exported the cookies using cookie editor, logged out the application. Then, imported the same cookies-especially SSO cookies, and did the refresh in browser, it automatically logging in without prompting for username and password. This is being observed as vulnerability.

 

 

 

Can someone help how this vulnerability can be fixed, so that we should not be able to login into the application using same cookies even after the logout.

application delivery
BIG-IP
LTM
security

2 Replies

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  • Erik_Novak's avatar
    Erik_Novak
    Icon for Employee rankEmployee
    Dec 21, 2020

    If you have F5 Advanced WAF/ASM you can create a login page which will clear cookies on logout and force the client to login again.

  • NetWork's avatar
    NetWork
    Icon for Nimbostratus rankNimbostratus
    Dec 22, 2020

    Hi Erik,

     

    Thanks for your response!

    Our F5 box enabled with LTM module only. In this case, do we have any possibility to fix this issue by tweaking persistence profile or irule.