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Himanshu Singh's avatar
Himanshu Singh
Iron Contributor
Jul 17, 2019

AAD Token ESTSAUTH Cookie Export Import

Assuming this is known already one can easily export the ESTSAUTH cookie from the browser once authenticated with AAD / Office 365,

 

and then import the same on another device and can easily access the services/apps with respect to token and license applied on the user, i guess with respect to AAD/O365 idea is to allow access from anywhere-anydevice

 

however this can be big security loophole where org has deployed Federated Authentication using ADFS/Ping etc... as this process bypasses all those checks

 

If this is known what is the recommendation to mitigate or Fix this ?

  • Strange this is not catching anyone's attention,

    Please all experts look into this and advise,

    By simply exporting and importing the mentioned cookies here user is able to bypass all machine level checks ? 

    Access from UnManaged Device ?

    How to prevent this please suggest

     

    BR,

    /HS

     

    • Himanshu Singh's avatar
      Himanshu Singh
      Iron Contributor

      Microsoft is aware of this and is working on introducing new session control feature as part of conditional access with Azure AD

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