exploit the possibilities

wellsfargo-notsogood.txt

wellsfargo-notsogood.txt
Posted Nov 26, 2007
Authored by joel

It appears that Wells Fargo's online banking is now allowing third party javascript from Akamai. Hopefully they come to their senses.

tags | advisory, javascript
MD5 | f70c4aad89a603207703fcc4f9b66d8e

wellsfargo-notsogood.txt

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In a recent chnage, wellsfargo.com started to include javascript delivered by akamai.net within sensitive pages, such as their login page.

Since any script loaded by the page has access to all the page data, that script could steal passwords very easily. Loading the script via a CDN reduces the banks security to the level of security provided by the CDN. I doubt that banking regulators would approve.

An attack on akamai or an insider there could access all wellsfargo.com bank accounts.

This is the equivalent of noticing that the bank's vault has another door and connects to the candy shop next door. Sure the candy shop is owned by a nice guy who locks his door at the end of the day, but I don't expect my bank to rely on him for security.

This was reported to wellsfargo security on November 17. They assure me that the padlock icon on the browser means everything is just fine.
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