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PROGENY-SA-2001-13: gFTP client potentially vulnerable to attack
From: Progeny Security Team <security () PROGENY COM>
Date: Tue, 8 May 2001 08:54:44 -0500

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 PROGENY SERVICE NETWORK -- SECURITY ADVISORY             PROGENY-SA-2001-13
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    Synopsis:       gFTP client potentially vulnerable to attack.

    Software:       gftp

    History:
         2001-04-18 Vendor patch/fix available
         2001-04-30 Update available in Progeny archive
         2001-05-08 Advisory sent

    Affects:        Progeny Debian (gftp prior to 2.0.8-1progeny1)

    Progeny Only:   NO

    Vendor-Status:  New Version Released
                    (gftp_2.0.8-1progeny1)


    $Id: gftp,v 1.5 2001/05/01 20:05:44 esmay Exp $

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DESCRIPTION

Versions of gFTP prior to 2.0.8 had a vulnerability related to format
strings which might allow a hostile FTP server to execute code on the
client system with the current user's privileges.


SOLUTION (See also: UPDATING VIA APT-GET)

Upgrade to a fixed version of gFTP. gFTP version 2.0.8 corrects the
problem. For your convenience, you may upgrade to the
gftp_2.0.8-1progeny1 package.


UPDATING VIA APT-GET

 1. Ensure that your /etc/apt/sources.list file has a URI for Progeny's
    update repository:

        deb http://archive.progeny.com/progeny updates/newton/

 2. Update your cache of available packages for apt(8).

    Example:

        # apt-get update

 3. Using apt(8), install the new package. apt(8) will download the
    update, verify its integrity with md5, and then install the
    package on your system with dpkg(8).

    Example:

        # apt-get install gftp


UPDATING VIA DPKG

 1. Use your preferred FTP/HTTP client to retrieve the following
    updated files from Progeny's update archive at:

    http://archive.progeny.com/progeny/updates/newton/

    MD5 Checksum                     Filename
    -------------------------------- -------------------------------------
    5d14ef5556de541eed9dbc2c3842cd55 gftp-common_2.0.8-1progeny1_i386.deb
    c086963abd6e085fe0ad8d69d244d89e gftp-gtk_2.0.8-1progeny1_i386.deb
    3d9fe053682f05286e606c317ee1d71c gftp-text_2.0.8-1progeny1_i386.deb
    fc142109adc12a9492c34316ca799b7e gftp_2.0.8-1progeny1_i386.deb

    Example:

        $ wget \
         http://archive.progeny.com/progeny/updates/newton/gftp-common_2.0.8-1progeny1_i386.deb \
         http://archive.progeny.com/progeny/updates/newton/gftp-gtk_2.0.8-1progeny1_i386.deb \
         http://archive.progeny.com/progeny/updates/newton/gftp-text_2.0.8-1progeny1_i386.deb \
         http://archive.progeny.com/progeny/updates/newton/gftp_2.0.8-1progeny1_i386.deb

 2. Use the md5sum command on the retrieved files to verify that they
    match the md5sum provided in this advisory:

    Example:

        $ md5sum gftp-common_2.0.8-1progeny1_i386.deb

 3. Then install the replacement package(s) using the dpkg command.

    Example:

        # dpkg --install gftp-common_2.0.8-1progeny1_i386.deb gftp-gtk_2.0.8-1progeny1_i386.deb 
gftp-text_2.0.8-1progeny1_i386.deb gftp_2.0.8-1progeny1_i386.deb


WORKAROUND

No known workaround exists for this vulnerability.


MORE INFORMATION

gFTP's changelog can be viewed at http://gftp.seul.org/changelog.html.

Progeny advisories can be found at http://www.progeny.com/security/.


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pub  1024D/F92D4D1F 2001-04-04 Progeny Security Team <security () progeny com>

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