[NT] Directory Traversal Vulnerability in 121 WAM! Server

From: SecuriTeam (support_at_securiteam.com)
Date: 08/12/03

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    To: list@securiteam.com
Date: 12 Aug 2003 14:44:33 +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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      Directory Traversal Vulnerability in 121 WAM! Server
    ------------------------------------------------------------------------

    SUMMARY

     <http://www.121software.com/121wam/server.asp> 121 WAM! Server is "a
    standard FTP server for Microsoft Windows. When used in conjunction with
    121 WAM! Client, it also provides your users with a complete solution to
    manage their online databases including Microsoft Access, SQL Server and
    MySQL. 121 WAM! makes uploading, downloading and transferring data a
    simple drag and drop operation. 121 WAM! Server is the first FTP server
    that supports database transfer functionality".

    Due to a vulnerability in the product remote attackers can access files
    that reside outside the bounding FTP root directory.

    DETAILS

    Vulnerable Systems:
     * 121 WAM! Server 1.0.4.0 (Possibly previous versions)

    Sending the command CWD .., will not change the directory. However sending
    CWD /../ allows normal users to 'hop' out of the pre-defined user root
    directory, and browse the entire hard drive.

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:peter4020@hotmail.com> Peter
    Winter-Smith

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