[UNIX] Clever Copy Privileges Escalation Vulnerability

From: SecuriTeam (support_at_securiteam.com)
Date: 08/02/05

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Date: 2 Aug 2005 17:49:11 +0200

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      Clever Copy Privileges Escalation Vulnerability
    ------------------------------------------------------------------------

    SUMMARY

    " <http://clevercopy.bestdirectbuy.com/> Clever Copy is a free, fully
    scalable web site portal and news posting system." Clever Copy contains a
    flaw that allows a Unauthorized read & delete Private Messages from other
    users.

    DETAILS

    Vulnerable Systems:
     * Clever Copy version 2.0
     * Clever Copy version 2.0a

    Authenticated users can directly access a page that will allow them access
    a private message of other users, in addition to being able to either read
    or delete these messages like they were their own.

    Proof of Concept:
    In order to access private messages we first need to be logged on. He can
    they go to the following addresses:
    http://[victim]/readpm.php?op=read&ID=2&name=pruebas&user=waltrapass
    or
    http://[victim]/readpm.php?op=read&ID=2&user=waltrapass

    Which will allow him to look at message ID 2 of the user waltrapass.

    In the above URL you can modify parameters to any of the following values:
    op = read or del
    id = id of the message
    name = username that sent the private message (this is not necessary to
    view or delete a message)
    user = username the user that received the message

    For example, to delete a message a URL such as this needs to be provided:
    http://[victim]/readpm.php?op=del&ID=2&name=pruebas&user=waltrapass
    or
    http://[victim]/readpm.php?op=del&ID=2&user=waltrapass

    Disclosure Timeline:
    Discovered: 25-07-2005
    Vendor notify: 26-07-2005
    Disclosure: 27-07-2005

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:lostmon@gmail.com> Lostmon.
    The original article can be found at:
    <http://lostmon.blogspot.com/2005/07/clever-copy-unauthorized-read-delete.html> http://lostmon.blogspot.com/2005/07/clever-copy-unauthorized-read-delete.html

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