[NEWS] Yawcam Directory Traversal

From: SecuriTeam (support_at_securiteam.com)
Date: 04/25/05

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Date: 25 Apr 2005 15:10:04 +0200

    The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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      Yawcam Directory Traversal
    ------------------------------------------------------------------------

    SUMMARY

    " <http://www.yawcam.com/> Yawcam is a webcam software for windows written
    in java by the student Magnus Lundvall. The main ideas for yawcam were to
    keep it simple but include all the usual features."

    The lack of Windows style directory markers filtering allows attackers to
    retrieve local files from the user's operating system.

    DETAILS

    Vulnerable Systems:
     * Yawcam version 0.2.5 (Windows)

    The Yawcam program has a built-in web-server that is by default able to
    avoid malicious patterns like "/../" but it's not able to avoid being
    exploited by patterns like "..\" or "\..\".

    Proof of Concept:
    GET ..\..\..\..\..\..\..\..\windows\system.ini HTTP/1.0
    GET \..\..\..\..\..\..\..\..\windows\system.ini HTTP/1.0

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:fdonato@autistici.org>
    Donato Ferrante.

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