[NT] Crystal FTP Pro Client LIST Buffer Overflow

From: SecuriTeam (support_at_securiteam.com)
Date: 12/19/04

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    To: list@securiteam.com
    Date: 19 Dec 2004 19:49:54 +0200
    
    

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      Crystal FTP Pro Client LIST Buffer Overflow
    ------------------------------------------------------------------------

    SUMMARY

     <http://www.casdk.com/> Crystal FTP Pro is "a Top awarded FTP client for
    dummies and experts". A vulnerability in the way Crystal FTP Pro parses
    incoming LIST responses allows a remote attacker to cause the program to
    execute arbitrary code.

    DETAILS

    Vulnerable Systems:
     * Crystal FTP Pro version 2.8

    Crystal FTP Pro client, does not perform bound checking on the results
    returned by 'LIST' command. A malicious ftp server, could execute
    arbitrary code on the target user's client, replies to a 'LIST' command
    request with a file list that contain a long file extension.

    Example:
    le.AAAAAAAAAAAA...(over 250 characters)

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:luca.ercoli@inwind.it> Luca
    Ercoli.

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