Vulnerability

    Infoseek Ultraseek

Affected

    Infoseek Ultraseek 2.1 to 3.1 and possibly others (NT only)

Description

    USSR & eEye DS Present found following.

        The Opener:
        T1 Internet Connection:             $1,000/month
        Dell PowerEdge 4350 Server:         $4,307
        10k Doc. license for Ultraseek 3.1: $4,995
        Brand new office in silicon valley: $10,000/month

    The  look  on  your  CEO's  face  when  you get hacked: Priceless.
    Ultraseek is  Infoseek Corporation's  search engine  software. The
    power  and  flexibility  of  Ultraseek  allow  it  to be used by a
    variety  of  business's.   From  the  small  mom  and pop shops to
    companies even as large as  Infoseek themselves.  You've heard  of
    go.com by now, haven't you?

    This advisory, although a rather nasty one, will be pretty  small.
    We are  not going  to get  into the  mechanics of buffer overflows
    since the subject has been talked about a lot.

    By default the  Ultraseek search engine  listens on port  8765 and
    provides  a  HTTP  interface  to  allow internet/intranet users to
    search a server for documents pertaining to their search keywords.
    To identify a vulnerable server you would do the following:

        C:\>telnet www.example.com 8765
        send-> HEAD / HTTP/1.0

        recv-> HTTP/1.0 200 OK
        recv-> Server: Ultraseek/3.1 Python/1.5.1
        recv-> Date: Thu, XX Dec 1999 23:59:42 GMT
        recv-> Content-type: text/html
        recv-> Content-length: 0

    Ultraseek  3.1  is  the  current  version  of  Ultraseek as of the
    writing of  this advisory.   USSR&eEye tested  versions as  old as
    2.1.  So while they are  not positive, they are pretty sure  every
    version of Ultraseek prior to 3.1 is vulnerable.

    The overflow  occurs in  the HTTP  Get command.  To DoS (Denial of
    Service) the server you would do  the following:

        C:\>telnet www.example.com 8765
        GET /[overflow]/ HTTP/1.0
        <enter>
        <enter>

    At  this  point  one  of  the  two  pyseekd.exe  (Ultraseek Server
    Process) will  drop and  reinitialize. Since  it is  a service you
    will never get an on screen memory error.  Also you will not  even
    really notice the process drop and reload but if you look  closely
    when you DoS the server one of the two pyseekd.exe process's  will
    now have a new PID.

    This  is  just  like  any  typical  buffer  overflow  and  it   is
    exploitable.  To download a proof of concept exploit, go to:

        http://www.ussrback.com/
        http://www.eeye.com/

    or go below as there is mimed version of it.

    Note: The example will just  create a file called ussreeye.txt  in
    whatever the current root is.   This exploit has only been  tested
    against Ultraseek 2.1 for NT Service Pack 5 and NT Service Pack 6.
    Please do not send  eMail saying you could  not get it to  work or
    things of that  nature.  If  you can't fix  it yourself then  most
    likely you do not need to be using it in the first place.

    What gets logged you ask?   Well in the application event log  you
    will  see  a  Warning  with  the following information: "Ultraseek
    Server:  Warning: restarted 3.1.4".  In the Ultraseek http  access
    logs (C:\Program Files\Infoseek\UltraseekServer\data\logs) nothing
    gets logged.   So when  all is  said and  done unless  you have  a
    router log to match the event  log time with... your left with  no
    way of knowing who did the dirty deed.

    Once again a web  service, just like IIS,  fails to log a  command
    before it processes.  Any service that takes commands needs to log
    the command first and then process it. That way unless there is an
    overflow  in  the  logging  process  we  will  always know what IP
    performed the attack.

    SP5 source exploit (mimed):

    ---
    Content-Type: application/octet-stream; name="sp5.zip"
    Content-Transfer-Encoding: base64
    Content-Disposition: inline; filename="sp5.zip"
    Content-MD5: 86NduFJBnsY7NfRyG2FCpQ==
    
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    -----

    SP6 source exploit (mimed):

    ---
    Content-Type: application/octet-stream; name="sp6.zip"
    Content-Transfer-Encoding: base64
    Content-Disposition: inline; filename="sp6.zip"
    Content-MD5: RIOXwTGdEf+g5fegO/DPxQ==
    
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    -----

Solution
    
    Fix:

        http://software.infoseek.com/products/ultraseek/upgrade_nt.htm
        ftp://ftp.infoseek.com/pub/software/ultraseek-3.1.5.exe