Document Title: =============== Yahoo Mail - Cross Site Scripting & Webfilter Bypass Release Date: ============= 2011-06-29 Vulnerability Laboratory ID (VL-ID): ==================================== 130 Product & Service Introduction: =============================== Enjoy tons of features and fun ways to stay in touch and share. Sign up now, it\'s FREE! * Get messages on the go. Yahoo! alerts you of new emails and lets you read them on your mobile phone. * Fight online foes. Kick em to the curb with outstanding protection against spam, viruses, and phishing from Yahoo! Mail. * Your mail. Keep it all. Enjoy unlimited storage. Save every email you receive in Yahoo! Mail. (Copy of the Vendor Homepage: https://login.yahoo.com/config/login_verify2?&.src=ym) Abstract Advisory Information: ============================== An anonymous Laboratory Researcher discovered a cross site vulnerability (pass through filter)on Yahoo Mail. Vulnerability Disclosure Timeline: ================================== 2011-06-29: Public or Non-Public Disclosure Discovery Status: ================= Published Affected Product(s): ==================== Exploitation Technique: ======================= Remote Severity Level: =============== Medium Technical Details & Description: ================================ A Cross Site Scripting bypass vulnerability is detected on the yahoo webfilter of the mailboxes. Remote attackers can bypass the webfilter and compromise sessions or data via user inter action on mailings. Vulnerability Type: Cross Site Filter Bypass Vulnerability (Remote) Vulnerable Section: Yahoo Web Filter Proof of Concept (PoC): ======================= The vulnerability can be exploited by remote attackers with high user inter action. For demonstration or reproduce ... Send: Hotmail HTML => Yahoo Mail Customer
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Security Risk: ============== The security risk of the vulnerability is estimated as medium. Credits & Authors: ================== N/A - Anonymous 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.vulnerability-lab.com/register Contact: admin@vulnerability-lab.com - support@vulnerability-lab.com - research@vulnerability-lab.com Section: video.vulnerability-lab.com - forum.vulnerability-lab.com - news.vulnerability-lab.com 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 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, sourcecode, 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 support@vulnerability-lab.com) to get a permission. Copyright © 2012 | Vulnerability Laboratory