[NEWS] OwnServer Directory Traversal Vulnerability

From: SecuriTeam (support_at_securiteam.com)
Date: 01/22/04

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Date: 22 Jan 2004 15:08:05 +0200

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      OwnServer Directory Traversal Vulnerability
    ------------------------------------------------------------------------

    SUMMARY

    OwnServer from <http://www.anteco.co.il> Anteco is a web server used for
    watching security cameras remotely. It allows broadcasting live streaming
    video over the web.

    OwnServer is vulnerable to a classic directory traversal attack due to
    inappropriate vailidity tests on the input URL.

    DETAILS

    Vulnerable Systems:
     * OwnServer version 1.0 and prior

    The webserver performs filter tests and substitution in order to protect
    itself from a directory traversal attack. The following patterns are
    checked for and replaced with safe ones:

     * "//" is replaced by ""
     * "\." and "\.." are replaced by ""
     * "\" is replaced by "/"
     * "\\" is replaced by "//"

    However, the classic "/../" pattern is for some reason not checked and
    thus it can pass unfiltered and allow the remote attacker the ability to
    view and download any file on the server's filesystem if the path to that
    file is known.

    Examples:

    http://< host>/../../boot.ini
    http://< host>/../../../boot.ini
    http://< host>/../../../../boot.ini
    http://< host>/../../../../../boot.ini
    http://< host>/../../../../../../boot.ini

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:the_insider@mail.com> Rafel
    Ivgi, The-Insider

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    In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages.

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