Информационная безопасность
[RU] switch to English


Дополнительная информация

  Ежедневная сводка ошибок в Web-приложениях (PHP, ASP, JSP, CGI, Perl )

  phpPC 1.04 Multiples Remote File Inclusion

  Pearl Forums 2.4 Multiple Remote File Include Vulnerabilities

  PhotoCart 3.9 (adminprint.
php) Remote File Include Vulnerability

  Vulnerability in PostNuke

From:revenge <revenge_(at)_0xcafebabe.it>
Date:22 ноября 2006 г.
Subject:ContentNow CMS 1.39 Sql Injection + Path Disclosure Vulnerabilities

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

ContentNow CMS 1.39 'pageid' Sql Injection + Path Disclosure

Severity : Medium Risk
Vendor   : http://www.contentnow.mf4k.de/
Author   : Revenge

[--------------------------------------------------]

[#] Description

ContentNow is a PHP Content Management System web 2.0 compliant, more
info can be found at vendor site.

ContentNow v1.39 is vulnerable to a sql injection and path disclosure.

[--------------------------------------------------]

Vuln #1  : Sql Injection
Impact   : Admin credentials disclosure
Exploit  : http://www.0xcafebabe.it/sploits/contentnow_139_sqlinj.pl
(Works regardless of magic quotes)

The "pageid" parameter in "index.php" isn't properly sanitised before
being used in a sql query, this can be exploited to manipulate existing
SQL query by inserting arbitrary SQL code, which can disclose sensitive
information like admin credentials.

The problem is due to:
[ index.php ]
...
...
// get/set id or startpageid from config
 -->   $pid = $_GET['pageid'];
       if (empty($pid) || $pid == 1) $pid =
$cnEngine->configArray[0]['startpageid'];

 -->   if (false == $cnEngine->checkPid($pid)) die ('<span
style="font:13px sans-serif;">Error loading site. No pid found.</span>');

       $cnEngine->setId($pid);
...
...

[ function checkPid($pid) and getActualContent($param) from
/cn/library/class.engine.php ]
...
...
function checkPid($pid) {
               $cnDatabase = NewADOConnection(ADODB_DB_TYPE);
               $cnDatabase->Connect(CN_DB_HOST, CN_DB_USER,
CN_DB_PASSWORD, CN_DB_NAME);
               $sql = "SELECT pageid FROM ".CN_TBL_SECTIONS." WHERE
pageid = ".$pid;
               $res = $cnDatabase->Execute($sql);
               if ($res->RecordCount() > 0) {
                       return true;
               } else {
                       return false;
               }
       }
...
...

function getActualContent($param = '') {
               $cnDatabase = NewADOConnection(ADODB_DB_TYPE);
               $cnDatabase->Connect(CN_DB_HOST, CN_DB_USER,
CN_DB_PASSWORD, CN_DB_NAME);
               $sql = "SELECT ".TABLE_FIELDS_CONTENT." FROM
".CN_TBL_CONTENT.$this->contentLanguageSuffix." WHERE pid =
".$this->pageid." AND deleted = 0 ".$param." ORDER by sort ASC";
               $res = $cnDatabase->Execute($sql);
               if ($res->RecordCount() > 0) {
                       while ($row = $res->FetchRow()) {
                               $row['contenttitle'] =
stripslashes($row['contenttitle']);
                               $row['contentsyskey'] =
stripslashes($row['contentsyskey']);
                               $row['contentsubtitle'] =
stripslashes($row['contentsubtitle']);
                               $row['content'] =
str_replace('\"','"',
$row['content']);
                               $contentArray[] = $row;
                       }
               }
               $this->contentArray = $contentArray;
               return $contentArray;
       }

As you can see there's no input validation on "pageid" parameter.

Vuln #2: It is also possible to disclose the full path to index.php by
requesting index.php?pageid='

[--------------------------------------------------]

[#] Solution

Download 1.40 version.

[#] Disclosure timeline

2006/11/20 Bug discovered
2006/11/20 Vendor contacted
2006/11/21 Vendor response
2006/11/21 New version 1.40 released
2006/11/21 Public Disclosure

Revenge

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.5 (Darwin)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQFFY0nJcLZvqfjeuvcRAlguAJ49Bdab5lNyX69OYmxIuzOb2yjvPwCcCq2+
OCNrT290ArsWjsqKG/Lk+OM=
=ICDL
-----END PGP SIGNATURE-----

О сайте | Условия использования
© SecurityVulns, 3APA3A, Владимир Дубровин
Нижний Новгород