Amazon Website Covert Redirect Web Security Bugs Based on Facebook - Attack Simulation
Domain:
http://www.amazon.com
"Amazon.com,
Inc. (/ˈæməzɒn/ or /ˈæməzən/) is an American electronic commerce
company with headquarters in Seattle, Washington. It is the largest
Internet-based retailer in the United States. Amazon.com started as an
online bookstore, but soon diversified, selling DVDs, Blu-rays, CDs,
video downloads/streaming, MP3 downloads/streaming, software, video
games, electronics, apparel, furniture, food, toys and jewelry. The
company also produces consumer electronics—notably, Amazon Kindle e-book
readers, Fire tablets, Fire TV and Fire Phone — and is a major provider
of cloud computing services. Amazon also sells certain low-end products
like USB cables under its inhouse brand AmazonBasics. Amazon has
separate retail websites for United States, United Kingdom &
Ireland, France, Canada, Germany, The Netherlands, Italy, Spain,
Australia, Brazil, Japan, China, India and Mexico. Amazon also offers
international shipping to certain other countries for some of its
products. In 2011, it had professed an intention to launch its websites
in Poland and Sweden." (Wikipedia)
Discover:
Discover and Reporter:
Wang
Jing, Division of Mathematical Sciences (MAS), School of Physical and
Mathematical Sciences (SPMS), Nanyang Technological University (NTU),
Singapore. (@justqdjing)
(1) Vulnerability Description:
Amazon
online website has a computer security bug problem. Hackers can exploit
it by Covert Redirect attacks. This allow them to get users' sensitive
information by attacks such as phishing.
The code programming flaw exists at "redirect.html?" page with "&location" parameter, e.g.
The
vulnerability can be attacked without user login. Tests were performed
on Safari 6.1.6 in Mac OS X 10.7.5, IE 8 in Windows 7, Chromium version
37.0.2062.120 in Ubuntu 12.04 (281580) (64-bit).
More Detail About Covert Redirect:
(2) Vulnerability Details:
When
a user is redirected from Amazon to another site, Amazon will check
parameters "&token". If the redirected URL's domain is OK, Amazon
will allow the redirection.
However,
if the URLs in a redirected domain have open URL redirection
vulnerabilities themselves, a user could be redirected from Amazon 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
Amazon directly.
One of the vulnerable domain is,
facebook.com
(3) Use one of webpages for the following tests. The webpage address is "http://inzeed.com/kaleidoscope ". Suppose that this webpage is malicious.
Vulnerable URL:
POC:
(4) Vulnerability Disclosure:
The vulnerability was reported to Amazon in the beginning of February 2014. Amazon has patch part of the vulnerability.
POC Videos:
More Details:
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