[UNIX] TowerBlog Administrative Authentication Bypassing

From: SecuriTeam (support_at_securiteam.com)
Date: 04/12/05

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Date: 12 Apr 2005 15:39:02 +0200

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      TowerBlog Administrative Authentication Bypassing
    ------------------------------------------------------------------------

    SUMMARY

     <http://tower.hybryd.org/?x=home> TowerBlog is, in short, a "single user
    web-log (or web journal if you will) content management system, aka CMS".
    Due to bad coding practices a remote attacker can cause the TowerBlog to
    think that an administrator is accessing the system and grant him
    administrative privileges to the blog, this without having to know the
    username and password of the administrator.

    DETAILS

    Vulnerable Systems:
     * TowerBlog version 0.6 and prior

    By accessing the TowerBlog system with a cookie named TowerBlog_LoggedIn
    whose value has been set to 1 a remote user can impersonate an
    administrator of the blog system.

    Vendor Status:
    Vendor has been informed, as of writing of this advisory he plans on not
    fixing this problem as he lost interest in continuing the development of
    the product.

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:noamr@beyondsecurity.com>
    Noam Rathaus.

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