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白帽子安全漏洞

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Google Covert Redirect Vulnerability Based on Googleads.g.doubleclick.net  

2014-12-04 17:24:02|  分类: XSS |  标签: |举报 |字号 订阅

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Bypass Google Open Redirect Filter Based on Googleads.g.doubleclick.net
-- Google Covert Redirect Vulnerability Based on Googleads.g.doubleclick.net



The vulnerability exists at "Logout?" page with "&continue" parameter, i.e.
The vulnerability can be attacked without user login. Tests were performed on Firefox (26.0) in Ubuntu (12.04) and IE (9.0.15) in Windows 7.




IT_Bahrain





(1) When a user is redirected from Google to another site, Google will check whether the redirected URL belongs to domains in Google's whitelist (The whitelist usually contains websites belong to Google), e.g.
If this is true, the redirection will be allowed.
However, if the URLs in a redirected domain have open URL redirection  vulnerabilities themselves, a user could be redirected from Google to a vulnerable URL in that domain first and later be redirected from this vulnerable site to a malicious site. This is as if being redirected from Google directly.

One of the vulnerable domain is,
googleads.g.doubleclick.net (Google's Ad System)



(2) Use one webpage for the following tests. The webpage address is "http://www.inzeed.com/kaleidoscope". We can suppose that this webpage is malicious.

Vulnerable URL:



POC:



POC Video:



Reporter:
Wang Jing, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore.








Related Articles:
http://lifegrey.tumblr.com/post/103787782054/whitehatview-googles-doubleclick-advertising
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