Mailing List Archive: yahoo open redirect vulnerability full disclosur

yahoo open redirect vulnerability full disclosur

justqdjing at gmail

Feb 12, 2014, 8:04 AM

Post #1 of 2 (624 views)

Dear Sir/Madam,

I am a student from NTU, Singapore. My name is Wang Jing. I just found a
yahoo open redirect vulnerability and reported it to yahoo 10 days ago.

However, yahoo did nothing about it.

The following is full disclosure. Attachment is prove of concept video. And
the link below is poc video I just posted on youtube.
http://www.youtube.com/watch?v=GTd1Gkj6OUY&feature=youtu.be

I just found one open url redirection vulnerability in yahoo.

This attacks doesn't even need users to login yahoo. My test is on all
browsers in all computer systems.

I use "poc of exploit" to denote that url redirection works.

Now I will use a website just built by me for the following tests. The
website is "http://www.tetraph.com". We can think this website is
malicious, because it is fully under my control.

vulnerable 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 exploit:

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

poc video:

http://www.youtube.com/watch?v=GTd1Gkj6OUY&feature=youtu.be

Re: yahoo open redirect vulnerability full disclosur [ In reply to ]

ronny.vasquezgt at gmail

Feb 13, 2014, 6:35 AM

Post #2 of 2 (563 views)

Hi,

Works with an Add url that's not expire, when the add is replaced with
another one the exploit don't work, but nice vulnerability that you find.

On Wed, Feb 12, 2014 at 10:04 AM, Jing Wang <justqdjing@gmail.com> wrote:

> Dear Sir/Madam,
>
> I am a student from NTU, Singapore. My name is Wang Jing. I just found a
> yahoo open redirect vulnerability and reported it to yahoo 10 days ago.
>
> However, yahoo did nothing about it.
>
>
>
> The following is full disclosure. Attachment is prove of concept video.
> And the link below is poc video I just posted on youtube.
> http://www.youtube.com/watch?v=GTd1Gkj6OUY&feature=youtu.be
>
>
> I just found one open url redirection vulnerability in yahoo.
>
> This attacks doesn't even need users to login yahoo. My test is on all
> browsers in all computer systems.
>
> I use "poc of exploit" to denote that url redirection works.
>
> Now I will use a website just built by me for the following tests. The
> website is "http://www.tetraph.com". We can think this website is
> malicious, because it is fully under my control.
>
>
> vulnerable 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 exploit:
>
>
> 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
>
>
> poc video:
>
> http://www.youtube.com/watch?v=GTd1Gkj6OUY&feature=youtu.be
>
> _______________________________________________
> Full-Disclosure - We believe in it.
> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
> Hosted and sponsored by Secunia - http://secunia.com/
>

--
Atentamente,
Ronny Vasquez
IT Security Advisor.