Document Title: =============== Yahoo Bug Bounty #37 - Sender Spoofing Vulnerability References: =========== https://www.vulnerability-lab.com/get_content.php?id=1985 Video: https://www.youtube.com/watch?v=QYZRbRqs50g Advisory: https://www.vulnerability-lab.com/get_content.php?id=1777 Release Date: ============= 2016-10-15 Vulnerability Laboratory ID (VL-ID): ==================================== 1985 Common Vulnerability Scoring System: ==================================== 3 Discovery Status: ================= Published Exploitation Technique: ======================= Remote Severity Level: =============== Low Technical Details & Description: ================================ Remote attackers are able to spoof the sender name of yahoo email users to send a spoofed sender with spoofed content. After investigation in the vulnerability we discovered that it is located in the yahoo classic web application product. Attackers are able to perform the malicious interaction via the yahoo classic mail service. The vulnerability is located in the `compose message` module of the web service. The request method to inject or intercept as reply is POST. Credits & Authors: ================== Vulnerability Laboratory [APT SECURITY TEAM] (research@vulnerability-lab.com) [www.vulnerability-lab.com] 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 mainly for consequential or incidental damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break any licenses, policies, deface websites, hack into databases or trade with stolen data. Domains: www.vulnerability-lab.com - www.vuln-lab.com - www.evolution-sec.com Section: magazine.vulnerability-lab.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.php Any modified copy or reproduction, including partially usages, of this file, resources or information 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, modify, use or edit our material contact (admin@) to get a ask permission. Copyright © 2016 | Vulnerability Laboratory - [Evolution Security GmbH]™